marantz PMD-526C Bluetooth Player User Guide
- June 6, 2024
- Marantz
Table of Contents
marantz PMD-526C Bluetooth Player
Introduction
Box Contents
PMD-526C (2) Rack Ears
Power Cable (6) Rackmount Screws
Remote Control User Guide
RCA Cable Safety & Warranty Manual
Support: For the latest information about this product (documentation, technical specifications, system requirements, compatibility information, etc.) and product registration, visit marantzpro.com.
Safety Instructions
Please also see the included Safety & Warranty Manual for more information.
Before turning the power on:
Make sure all connections are secure and correct and that there are no
problems with the connection cables. Power is supplied to some of the
circuitry even when the unit is powered off. When the unit will not be used
for long periods of time, disconnect the power cable from the power outlet.
Proper ventilation:
If the unit is left in a room which is not properly ventilated or is full of
smoke from cigarettes, dust, etc. for long periods of time, the surface of the
optical pickup may get dirty, causing incorrect operation.
About condensation:
If there is a major difference in temperature between the inside of the unit
and the surroundings, condensation may form inside the unit, causing the unit
not to operate properly. If this happens, let the unit sit for an hour or two
while powered off, and wait until there is little difference in temperature
before using the unit.
Cautions on using mobile phones:
Using a mobile phone near this unit may cause noise. If this occurs, move the
mobile phone away from this unit when it is in use. Moving the unit: Before
moving the unit, turn off its power and disconnect the power cable from the
power outlet. Next, disconnect its connection cables from other devices before
moving it.
About care:
Wipe the cabinet and control panel clean with a soft cloth. Follow the
instructions when using a chemical cleaner. Do not use benzene, paint thinner,
insecticide, or other organic solvents to clean the unit. These materials can
cause material changes and discoloration.
Rackmount warnings:
(required rack specifications for mounting the unit in a rack) EIA standard 19-inch (48.3cm) rack 1U-size installation compatible rack Rack that has a guide rail or shelf board that can support this device
Rack installation:
This product will work normally when the player unit is mounted within 10°
off the vertical plane at the front panel. If the unit is tilted excessively,
the disc may not load or unload properly. (See image.)
Features
Front Panel
- Power Button: Press this button to turn the unit on or off. Make sure the AC In is properly connected to a power outlet. Do not turn the unit off during media playback—doing so could damage your media.
- Aux In: Connect an optional device to this input using a 1/8” (3.5mm) TRS cable. See Operation > Playing Audio from an External Device for more information.
- USB Port: Connect a mass-storage-class USB device to this port.
- CD Slot: Insert a CD into this slot. See Operation > Playing Audio CDs for more information.
- CD/AUX/USB/BT/SD Button: Press this to enter Media Selection screen. See Operation > Selecting Media Playback Mode for more information.
- Repeat Button: In CD, USB, or SD mode, press this button to switch between Repeat Playback modes: Repeat One , Repeat All , and Repeat Off. See Operation > Playing Audio CDs for more information. Power-On Play Button: Press and hold this button to turn Power-On Play on or off. See Operation > Additional Functions > Power-On Play for more information. Device Select: When in Bluetooth mode, press the Device Sel. button. The screen will show “BT Device List”. Use |<</<< and >>/>>| to navigate through the list of Bluetooth devices. When you find one you want to pair to, select it by pressing the Jog Dial.
- Random Button: In CD, USB, or SD mode, press this button to cycle through Random Play Mode and Single Play Mode (). Pairing: When Bluetooth mode is selected, the device will automatically enter pairing mode. To disconnect from a paired Bluetooth device, press and hold the Pairing button for 1.5 seconds. If you have set a custom Bluetooth pairing password, it is required to input this password before pairing. If a custom password was not set, (factory default: 0000) it is not required to input the password.
- Time Button: In CD, USB, or SD mode, press this button to switch the Time Mode in the display. See Operation > Playing Audio CDs for more information. Folder: When in USB or SD mode, hold this button to switch to Folder View. Clear: In Bluetooth mode, press and hold the Clear button to remove all paired devices from the unit’s memory (and also unpair from a currently paired device). After the devices have been cleared from the unit’s memory, to connect again to the same device, go to your Bluetooth device and select “Unpair” or “Forget the Device”, depending on the type of device that you have. You can then select PMD-526C from your list of Bluetooth devices and connect.
- Text Button: In CD, USB Mode, or SD, press this button to switch the display between the track name and artist name. Lock Button : Press and hold this button to turn Panel Lock on and off. See Operation > Additional Functions > Panel Lock for more information.
- Eject Button: Press this to eject the CD in the CD slot. To force-eject a CD, power off the unit, then press and hold the eject button while powering the unit back on. To exit force-eject mode, turn the unit off.
- Display: This screen indicates the unit’s current operation. See Display for more information.
- Tempo Control/Pitch: Press and release this knob to access the Tempo Control (tC) and turn the knob to to adjust the tempo of the audio playback in a range from -15% to +15%, in 1.5 increments. Press this knob again to access the Pitch controls. Turn this knob to raise or lower the pitch of the audio playback in a range from -15% to +15%, in 1.5 increments. If the pitch is adjusted first and then the tempo is adjusted, the pitch will remain at the previously set value. If the tempo is adjusted first and then the pitch is changed, the tempo will be reset to the value of 0.
- Track Select/Search Buttons: In CD, USB, BT, or SD Mode, press and release the |<</<< button to go to the previous track. Press and release the >>/>>| button to go to the next track. In CD, USB, or SD Mode Press and hold the |<</<< button to rewind through a track at 5 times the normal playback speed. Press and hold the >>/>>| button to fast-forward through a track at 5 times the normal playback speed.
- Stop Button: Press this button to stop playback. To view current firmware version, hold the stop button while powering on the unit.
- Play/Pause Button: Press this button to start, resume, or pause playback.
- Number Buttons (0–9): In CD Mode, Press one of these buttons to directly select a track to play. If the track number is two digits, press the buttons in succession (e.g., 1 then 2 for Track 12).
- SD Card Slot: Insert your SD card here to play music files.
Display
- Media Type: This is the currently selected media: CD, AUX, USB, SD or Bluetooth. See Operation > Selecting Media Playback Mode for more information.
- Playback Operation Icon: This shows various symbols to indicate the current playback status:
- Playing Rewinding
- Paused Fast-Forwarding
- Stopped
- Information: This shows extra information about the media being played.
- Track/File Number: This is the number of the track or file.
- Function Icons: This shows various symbols to indicate these current functions:
- Random Playback (see Operation > Playing Audio CDs for more information)
- Single Play Mode (see Operation > Playing Audio CDs for more information)
- Repeat One (see Operation > Playing Audio CDs for more information)
- Repeat All (see Operation > Playing Audio CDs for more information)
- Power-On Play (see Operation > Additional Functions > Power-On Play for more information)
- Panel Lock (see Operation > Additional Functions > Panel Lock for more information) (see Features > Front Panel > Tempo Control/Pitch for more information)
- Time: In CD, SD and USB Mode, this displays how much time has elapsed, the remaining time, total elapsed time, or the total remaining time (for CD mode only) shown as hh:mm:ss (hours, minutes, and seconds). See Operation > Playing Audio CDs for more information.
Rear Panel
- Outputs (unbalanced RCA): These outputs send the audio signals from a CD, SD, BT, or USB device (mass storage class), and device connected to the Aux In. Use RCA cables to connect these outputs to external speakers, sound system, etc. See Setup for more information.
- Outputs (balanced XLR): These outputs send the audio signals from a CD, SD, BT, or USB device (mass storage class), and device connected to the Aux In. Use XLR cables to connect these outputs to external speakers, sound system, etc. See Setup for more information.
- AC In: Use the included power cable to connect this input to a power outlet. See Setup for more information.
- Bluetooth Receiver: This is the built-in antenna used to receive a signal from a Bluetooth device.
- Remote Input: This input lets you connect a host device (usually a computer) to PMD-526C. You can use the host device to control PMD-526C via commands sent from it (using RS-232C serial communication). Note: Go to marantzpro.com to access the serial protocol guide for more information.
- Operation Switch: For standard playback, leave this switch at the “Normal” position. If updating the unit, set this switch to the “Update” position.
Setup
Important : Connect all cables securely and properly (with stereo cables: left with left, right with right), and do not bundle them with the power cable.
- Use XLR cables or a stereo RCA cable to connect the Outputs (balanced or unbalanced) to the analog inputs of your external receiver, amp, powered monitors, etc.
- After completing all the connections, use the included power cable to connect the AC In to a power outlet.
Example:
Operation
Remote Control
-
Mute: Disables the sound from the audio outputs.
-
BT: Switch to Bluetooth mode.
-
Tempo/Pitch Menu: Cycle through tempo and pitch controls.
Note : Tempo/Pitch controls will only function in CD, SD and USB modes. -
USB/SD: Switch between USB or SD mode.
-
AUX: Switch to Aux Mode.
-
CD: Switch to CD Mode.
-
Play: Plays audio from a CD, USB flash drive, SD card, or Bluetooth device.
-
Pause: Pause audio from a CD, USB flash drive, SD or Bluetooth device.
-
Stop: Stops audio from a CD, USB flash drive, or SD.
-
Eject: Ejects or inserts a CD.
-
Previous Track: Goes to the previous CD, USB, or SD track.
-
Next Track: Advances to the next CD, USB, or SD track.
-
Search Backward: Hold to rewind through a CD, USB, or SD track.
-
Search Forward: Hold to fast forward through a CD, USB, or SD track.
-
Random: Press to cycle through Random Play Mode or Single Play Mode () in CD, USB, or SD mode.
-
Display: Press and release the button to adjust the display brightness. Press and hold the button to open the options menu. Hold the button again to close the option menu.
-
Tempo/Pitch Up: Adjust the tempo or pitch up.
-
Tempo/Pitch Down: Adjust the tempo or pitch down.
-
Repeat: In CD, USB, or SD mode, switch between Repeat Playback modes: Repeat One , Repeat All , and Repeat Off.
-
Time: In CD, USB, or SD Mode, press this button to switch the time in the display from Time Elapsed, Time Remaining, Total Elapsed Time, or Total Time Remaining (for CD Mode only).
-
Text/Lock: In CD, USB, or SD Mode, press to switch the display between the track name and artist name. Press and hold to turn Panel Lock on and off.
Battery Usage
Important : Before using the remote control for the first time, pull the insulation sheet out from the battery compartment.
To replace the battery:
- On the back of the remote control, put a paperclip into the door release hole and then slide the door release open.
- Pull out the old lithium battery from the battery case and insert a new one. Place the battery so that the positive (+) side faces upward.
- Place the battery case carefully into the compartment so the edges are in the grooves and then slide the battery case to its original position.
Important : Misuse of the lithium battery can result in heat build-up, ignition, or rupture. Bear in mind the following points when using or replacing batteries:
- The supplied battery is for testing the functionality of the remote controller.
- Use a 3V CR2032 lithium battery.
- Never recharge the battery. Do not handle the battery roughly or disassemble the battery.
- When replacing the battery, place it with its polarities (+ and -) facing the correct directions.
- Do not leave the battery in a place subject to high temperature or direct sunlight.
- Keep the battery in a place beyond the reach of infants or children. If a battery is swallowed, consult a physician immediately.
- If electrolyte has leaked, discard the battery immediately. Be careful when handling it as the electrolyte can burn your skin or clothes. If the electrolyte touches your skin or clothes, immediately wash with tap water and consult a physician.
- Before discarding a battery, insulate it with tape, etc. and dispose of it in a place without fire, by following the directions or regulations laid down by the local authorities in the area of its disposal.
Operating Range
Point the remote control at the IR sensor when operating it.
Note : If the remote control sensor is exposed to direct sunlight, strong
artificial light (like from an interverter-type fluorescent lamp), or infrared
light, the unit or remote control may not function properly.
Selecting the Media Playback Mode
To select what kind of media you want to play: To cycle through the available
options, press the Source button.
• CD: audio CD, CD-DA, CD-ROM, MP3, or CD with audio files (CDR) (see Playing
Audio CDs)
• Aux: device connected to Aux In (see Playing Audio from an External Device)
• USB: USB device (mass storage class) (see Playing Audio Files On a USB Flash
Drive)
• Bluetooth: Bluetooth device (see Playing Audio from a Bluetooth Device)
• SD: SD card, (see Playing Audio Files on a SD Card)
Playing Audio CDs
To play audio CDs:
1. If the unit is off, press the Power button to power it on.
Important : Do not insert a CD when the power is off. Doing so may damage
the unit.
2. Insert a CD into the CD slot. (Hold the edges of the CD without touching
the recorded surface. Be careful not to trap your fingers when the disc is
drawn into the unit.)
3. Select CD as the media type (described in Selecting the Media Playback
Mode). The CD will start playing automatically when Power-On Play mode is
active. In CD Mode, you can perform any of the following operations:
• To start, resume, or pause playback, press the Play/Pause button.
• To stop playback, press the Stop button.
• To rewind or fast-forward through the track, press and hold one of the
Search buttons. The track will rewind/fast-forward at 5 times the normal
playback speed. To resume playback, release the button.
To skip directly to a track:
1. If in Pause, Stop, or Play mode, press one of the Number buttons (0–9) to
enter the desired track number. If the track number is two digits, press the
buttons in succession (e.g., 1 then 2 for Track 12). Alternatively, use the
|<</<< and >>/>>| buttons to select a track.
2. If the track was playing, was paused, or was stopped, playback will
automatically begin once a new track is selected.
• To select a Repeat Playback mode, press the Repeat button. It will cycle
Repeat One (the same track will repeat indefinitely), Repeat All (the list of
all tracks will repeat indefinitely), and Repeat Off (no tracks will repeat).
• To select the Play Mode, press the Random button. It will cycle through
Random (the tracks will play in a random order [for up to 256 tracks]), and
Single Play () (the current track will play until its end and then stop.
• To change the Time Mode in the display, press the Time button. It will cycle
through Elapsed (how much time has elapsed of the current track), Remaining
(how much time remains of the current track), Total Elapsed Time (how much
time has elapsed of all remaining tracks), and Total Remaining (how much time
remains of all remaining tracks. This applies only to CDs.)
• To eject a CD, press the Eject button when the unit is stopped or paused.
Ejecting will appear in the display while ejecting the CD. No Disc will appear
when there is no disc in the CD slot.
Important : Please see Other Information > CDs to learn more about the
types of CDs the PMD-526C supports and for more information about CD handling
and care. When powering on the unit, hold the Eject button to engage Force
Eject Mode.
Playing MP3 Files on a CD
To play MP3 files on a CD:
1. If the unit is off, press the Power button to power it on.
Important : Do not insert a CD when the power is off. Doing so may damage
the unit. When powering on the unit, hold the Eject button to engage Force
Eject Mode.
2. Insert a CD into the CD slot. (Hold the edges of the CD without touching
the recorded surface. Be careful not to trap your fingers when the disc is
drawn into the unit.)
3. Select CD as your desired media type: (described in Selecting the Media
Playback Mode).
4. Select an audio file:
• To move through audio files, press the |<</<< and >>/>>| buttons.
• Press one of the Number buttons (0–9) to enter the desired track number. If
the track number is two digits, press the buttons in succession (e.g., 1 then
2 for Track 12).
In CD Mode, you can perform any of the following operations:
• To start, resume, or pause playback, press the Play/Pause button.
• To stop playback, press the Stop button.
• To rewind or fast-forward through the track, press and hold one of the
Search buttons. The track will rewind/fast-forward at 5 times the normal
playback speed. To resume playback, release the button.
• To select a Repeat Playback mode, press the Repeat button. It will cycle
through Repeat One (the same track will repeat indefinitely), Repeat All (the
list of all tracks will repeat indefinitely), and Repeat Off (no tracks will
repeat).
• To select the Play Mode, press the Random button. It will cycle through
Random (the tracks will play in a random order [for up to 256 tracks]), and
Single Play () (the current track will play until its end and then stop).
• To change the Time Mode in the display, press the Time button. It will cycle
through Elapsed (how much time has elapsed of the current track), Remaining
(how much time remains of the current track), Total Elapsed Time (how much
time has elapsed of all remaining tracks), and Total Remaining (how much time
remains of all remaining tracks. This applies only to CDs.)
• To eject a CD, press the Eject button. Ejecting will appear in the display
while ejecting the CD. No Disc will appear when there is no disc in the CD
slot.
Playing Audio from an External Device
To play audio on an external device (e.g., smartphone, computer, portable
music player, etc.) connected to the Aux In:
1. If the unit is off, press the Power button to power it on.
2. Connect the 1/8” (3.5 mm) stereo/headphone output of your external device
to the Aux In.
3. Select Aux as the media type (described in Selecting the Media Playback
Mode). If your external device is connected, AUX Connected will appear in the
display. If your external device is not connected, AUX Disconnect will appear
in the display.
4. To start playback, press the Play button on your external device.
Important : All buttons except for Power, CD/AUX/USB/BT/SD, and Eject
will be locked/disabled.
Playing Audio Files on a USB Flash Drive
To play audio files on a USB flash drive:
1. If the unit is off, press the Power button to power it on.
2. Connect your USB device (mass storage class) to the USB Port.
3. Select USB as your desired media type (described in Selecting the Media
Playback Mode).
4. Select an audio file:
• When a USB flash drive is first connected, files on the root directory will
be shown. Press and hold the Folder button to open to the first folder. All
files within that folder will appear first. All other playable content on the
flash drive will appear after. To access another folder, press and hold the
Folder button again.
• To move through audio files, press the |<</<< and >>/>>| buttons.
• Press one of the Number buttons (0–9) to enter the desired track number. If
the track number is two digits, press the buttons in succession (e.g., 1 then
2 for Track 12).
In USB Mode, you can perform any of the following operations:
• To start, resume, or pause playback, press the Play/Pause button.
• To stop playback, press the Stop button.
• To rewind or fast-forward through the track, press and hold one of the
Search buttons. The track will rewind/fast-forward at
5 times the normal playback speed. To resume playback, release the button.
• To change the view mode, press the Folder/Time button.
• To select another folder or audio file, follow the steps described in Step 4
above.
• To show different track information in the display, press the Text button.
It will cycle through the file name and other text information.
• To select a Repeat Playback mode, press the Repeat button. It will cycle
through Repeat One (the same track will repeat indefinitely), Repeat All (the
list of all tracks will repeat indefinitely), and Repeat Off (no tracks will
repeat).
• To select the Play Mode, press the Random button. It will cycle through
Random (the tracks will play in a random order [for up to 256 tracks]), and
Single Play (the current track will play until its end and then stop).
• To change the Time Mode in the display, press the Time button. It will cycle
through Elapsed (how much time has elapsed of the current track) and Remaining
(how much time remains of the current track).
• To remove a USB device, gently remove it from the USB Port when it is not
playing. (Removing a USB device while it is playing can damage it.)
Playing Audio from a Bluetooth Device
To play Bluetooth Tracks:
1. If the unit is off, press the Power button to power it on.
2. Select Bluetooth (BT) as the media type (described in Selecting the Media
Playback Mode).
3. Navigate to your Bluetooth device’s setup screen, find “PMD-526C” and
connect.
Note : If your Bluetooth device prompts for a pairing code, enter 0000.
In Bluetooth Mode, you can perform any of the following operations:
• To start, resume, or pause playback, press the Play/Pause button.
• To pause playback, press the Stop button.
• To see a list of Bluetooth devices, press the Device Sel. button. The screen
will show “BT Device List”. Use the |<</<< and >>/>>| buttons to navigate
through the list of Bluetooth devices. When you find one you want to pair to,
select it by pressing the Jog Dial.
• To disconnect from a paired Bluetooth device, press and hold the Pairing
button for 1.5 seconds. If you have set a custom Bluetooth pairing password,
it is required to input this password before pairing. If a custom password was
not set, (factory default: 0000) it is not required to input the password.
• To remove the list of paired devices and disconnect from any currently
paired device, press and hold the Clear button to remove all paired devices
from the unit’s memory (and also unpair from a currently paired device). After
the devices have been cleared from the unit’s memory, to connect again to the
same device, go to your Bluetooth device and select “Unpair” or “Forget the
Device”, depending on the type of device that you have. You can then select
PMD-526C from your list of Bluetooth devices and connect.
Playing Audio from a SD Card
To play audio files on a SD Card:
1. If the unit is off, press the Power button to power it on.
2. Insert the SD card into the SD card slot.
3. Select SD as your desired media type (described in Selecting the Media
Playback Mode).
4. Select an audio file:
• When a SD card is first connected, files on the root directory will be
shown. Press and hold the Folder button to open to the first folder. All files
within that folder will appear first. All other playable content on the SD
card will appear after. To access another folder, press and hold the Folder
button again.
• To move through audio files, press the |<</<< and >>/>>| buttons on the
unit.
• Press one of the Number buttons (0–9) to enter the desired track number. If
the track number is two digits, press the buttons in succession (e.g., 1 then
2 for Track 12).
In SD Mode, you can perform any of the following operations:
• To start, resume, or pause playback, press the Play/Pause button.
• To stop playback, press the Stop button.
• To rewind or fast-forward through the track, press and hold one of the
Search buttons. The track will rewind/fast-forward at 5 times the normal
playback speed. To resume playback, release the button.
• To change the view mode, press the Folder/Time button.
• To select another folder or audio file, follow the steps described in Step 4
above.
• To show different track information in the display, press the Text button.
It will cycle through the file name and other text information.
• To select a Repeat Playback mode, press the Repeat button. It will cycle
through Repeat One (the same track will repeat indefinitely), Repeat All (the
list of all tracks will repeat indefinitely), and Repeat Off (no tracks will
repeat).
• To select the Play Mode, press the Random button. It will cycle through
Random (the tracks will play in a random order [for up to 256 tracks]), and
Single Play () (the current track will play until its end and then stop).
• To change the Time Mode in the display, press the Time button. It will cycle
through Elapsed (how much time has elapsed of the current track) and Remaining
(how much time remains of the current track).
• To remove a SD card, gently push the card when it is not playing. (Removing
a SD card while it is playing can damage it.)
Additional Functions
Panel Lock
Use the Panel Lock feature to prevent accidental changes to the unit. When Panel Lock is activated, all buttons except for the Power button and Text/Lock button are locked/disabled on the unit. (The remote control will still function normally.)
To activate or deactivate Panel Lock, press and hold the Text/Lock button.
• When activated, P-Lock ON and will appear in the display.
• When deactivated, P-Lock OFF will appear in the display, and will disappear.
Power-On Play
Use the Power-On Play feature to set the unit to automatically start playback
of the CD in the drive. To activate or deactivate Power-On Play, press and
hold the Pwr On Play button.
• When activated, P-OnPlay On will appear on the display.
• When deactivated, P-OnPlay Off will disappear on the display.
Menu Settings
To access the Menu settings, press and hold the Jog dial (or press and hold the Display button on the remote). Turn the Jog dial or use the < and > buttons on the remote to navigate through the menu. Press the Jog dial to select an option or press the Play button on the remote. Press the Pause button on the remote to return to the previous Menu option, exit out of the menu, or wait a few seconds and the unit will automatically exit out of the Menu settings. The Menu settings seen are:
• Baud Rate (options are 9600, 38,400 and 115,200 b/s)
• Flash Update (starts the process to update the unit. See marantzpro.com to
check if there are any available updates)
• System Version (displays the current firmware version)
• System Reset (resets the unit to factory default settings)
Other Information
USB Devices / SD Cards
When playing audio files, note the following:
- PMD-526C does not charge any connected USB device and does not support USB hubs or USB extension cables.
- PMD-526C supports USB devices that are mass storage class or compatible with MTP.
- PMD-526C supports FAT16 or FAT32 file systems only.
- You can have up to 999 folders and up to 8 folder levels, including the root directory.
- You can have up to 999 audio files. If the USB device contains more than 1000 files, some audio files may not play or appear correctly.
- File names, folder names, and text characters can use up to 255 characters. Only uppercase letters, lowercase letters, numbers, and symbols can be displayed. Japanese file names will not be shown. File names that begin with a “.” will not be shown.
- Copyright-protected files might not play properly and/or may appear as Unknown File. When playing audio files on a USB device, PMD-526C supports the following tag data:
- ID3 tags: Version 1.x and 2.x
- MP3:
- Sample rate: 44.1 kHz
- Bit rate: 64 kbps to 320 kbps
- Format: MPEG1 Audio Layer 3
- File extension: .mp3
- MP2
- M4A (without DRM protection)
- WMA (without DRM protection)
Audio File Playback Order
When playing audio files stored within multiple folders, the playback order of each folder is automatically set when the unit reads the media. The files in each folder will play in the same order in which they were added to the media. (This order may appear differently on your computer and/or in your software than it does on the unit.)
Troubleshooting
If you encounter a problem, do the following:
• Make sure all cables, devices, antennae, and/or media are properly and
securely connected.
• Make sure you are using the unit as described in this User Guide.
• Make sure your other devices or media are working properly.
• If you believe the unit is not working properly, check the following table
for your problem and solution.
References
Read User Manual Online (PDF format)
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