Goldstar MS-193SJ Microwave Oven Owner’s Manual

Goldstar MS-193SJ Microwave Oven

DOOR PARTS

CAUTION
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

SPECIFICATIONS

1,500 Watts

Single phase, 3 wire grounded

Power Output| 1,100 Watts full microwave power (IEC705)
Microwave Frequency| 2,450 MHz
Magnetron| 2M246, 2M248J
Timer| 0 ~ 99 min. 99 sec.
Outside Dimensions| 237/S”(W) X 139/16″(H) x 1813/16″(0)
Cavity Dimensions| H1/16″(W) X 103/a”(H) x 185/16″(0)
Net Weight| 42 lbs (approx.)
Shipping weight| 46 lbs (approx.)
Control Complement| Touch Control System Clock: 1:00 – 12:59

Microwave Power for Variable Cooking Power level

HIGH————————————– Full power throughout the cooking time

9 (Saute) ————————-approx. 90% of Full power,     8 (Reheat)——— approx. 80%

7 (Med.-High) ——————–approx. 70%,                      6 (Medium)——- approx. 60%

5 (Med.-Low) ——————–approx. 50%,                      4 (Defrost)——— approx. 40%

3 (Low) —————————approx. 30%,                      2 (Simmer)——– approx. 20%

1 (Warm)———————— approx. 10%

Nameplate Location|
Accessories| Owner’s manual & cooking guide

Glass turntable

Rotating ring

This microwave oven is designed for household use only. It is not recommended for commercial purposes.

FEATURES

CONTROL PANEL

1. DISPLAY WINDOW.
2. SENSOR TOUCH: COOK I REHEAT / POPCORN / CAKE
3. AUTO COOK.
4. CLOCK: It is used to set the time of day.
5. CUSTOM SET: You can select sound on/off, clock on/off, scroll speed, lbs/kg choice, demo on/off mode.
6. NUMBER: These used to set for time of day, cooking time, power level, or defrost weight.
7. TIME: You can set the desired cook time.
8. MORE/ LESS: All of the one touch cook and TIMED COOK can be adjusted to cook food for a longer or shorter time.
   • MORE  Pressing MORE will add 10 seconds to the cooking time.
   • LESS  Pressing LESS will subtract 10 seconds of cooking time.
9. STOP/CLEAR: It used to stop oven and clear all entries except time of day.
10. EZ ON: You can extend cooking time in multiples of 30 seconds by repeatedly touching this pad during cooking
11. TIMER.
12. POWER: You can select the desired power level for cooking.
13. AUTO DEFROST: This feature provides you with the best defrosting method for frozen foods.
14. START: This feature allows oven to begin functioning.

OPERATING SEQUENCE

The following is a description of component functions during oven operation.

1. SETTING THE CLOCK
   ex.) To set 4:30, touch number key [4],[3], and [O].
   NOTE:

2. This is a 12 hour clock.

3. Clock will operate as long as power is applied to the oven.

4. CANCEL FUNCTION
   Touch the STOP/CLEAR pad whenever you need to cancel an entry or a function currently in use. The display will return either to the last item entered or to the clock.

5. EZ ON

6. AUTO COOKING
   AUTO COOK has 6 foods categories

7. TIME COOKING

8. MULTI-STAGE COOKING

9. 1ST STAGE

10. 2ND STAGE

11. AUTO WEIGHT DEFROST COOKING

12. CHILD LOCK
    This oven has a CHILD LOCK feature

    • TO SET CHILD LOCK
    • Touch the STOP/CLEAR pad
    • Touch and hold O pad LOCKED appears on the display.
    • TO CANCEL CHILD LOCK
    • Touch and hold O pad. LOCKED disappears.

13. MORE/ LESS
    The cook time is adjustable by MORE pad or LESS pad.

14. SENSOR COOK
    Sensor cook has 10 foods categories.

15. CUSTOM SET
    You can select Sound On/Off, Clock On/Off, Scroll Speed, Lbs/Kg Choice, Demo On/Off modes.

    • To turn ON/OFF sound.
    • To select scroll speed.

SCHEMATIC DIAGRAM

IMPORTANT SAFETY NOTE: THE SHADED AREAS ON THIS SCHEMATIC DIAGRAM INCORPORATE SPECIAL FEATURES

IMPORTANT FOR PROTECTION FROM MICROWAVE RADIATION, FIRE, ELECTRICAL SHOCK, AND HAZARDS. WHEN SERVICING IT IS ESSENTIAL THAT ONLY MANUFACTURER’S SPECIFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SHADED AREAS OF THE SCHEMATIC DIAGRAM.

NOTICE: SINCE THIS IS BASIC SCHEMATIC DIAGRAM, THE VALUES OF COMPONENTS AND SOME PARTIAL CONNECTIONS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.

CIRCUIT DESCRIPTION

GENERAL DETAILS

• The low voltage transformer supplies the necessary voltage to the micom controller when power cord is plugged in.
• When the door is closed, the primary switch is ON, the secondary switch is ON, and the monitor switch opens (contact COM and NO).

WHEN SELECTING COOKING POWER LEVEL AND TIME

• The micom controller memorizes the function you set.
• The time you set appears in the display window.
• Each indicator light turns on to indicate that the stage has been set.

WHEN TOUCHING THE START PAD

• The coil of the relay is energized by the micom controller.
• Power input is supplied to the high voltage transformer through the fuse to the primary switch and relay 2.
• Turntable rotates.
• The fan motor rotates and cools the magnetron by blowing the air (coming from the intake on the baseplate).
• The air is also directed into the oven to exhaust the vapor in the oven through the upper plate.
• Cooking time starts counting down.
• 3.3 volts AC is generated from the filament winding of the high-voltage transformer. This 3.3 volts is applied to the magnetron to heat the magnetron filament through two noise-preventing choke coils.
• A high voltage of approximately 2100 volts AC is generated in the secondary of the high voltage transformer which is increased by the action of the high voltage diode and charging of the high voltage capacitor.
• The negative 4,000 Volts DC is applied to the filament of the magnetron.

WHEN THE OVEN IS SET AT ANY LEVEL EXCEPT MAXIMUM.

• The micom controller controls the ON-OFF time of relay 2 by the applied signal to vary the average output power of microwave oven as POWER LEVEL. (refer to page 1-1)
  One complete cycle of relay 2 is 22 seconds.

WHEN THE DOOR IS OPENED DURING COOKING

• Both the primary switch and relay 2 cut off the primary winding voltage of the high-voltage transformer.
• ON-OFF of relay 2 is coupled electrically with opening and closing of the secondary switch.
• When the door is opened, the secondary switch is opened and when the door is closed, the secondary switch is closed.
• The cooking time stops counting down.
• Relay stops functioning.
• As the door is opened, if the contact of primary switch and relay2 and/or secondary switch fail to open, the fuse opens due to the large current surge caused by the monitor switch activation, which in turn stops magnetron oscillation.

References

• Repair Your Grill: Shop Replacement Parts for 24,880 Models
• Goldstar Microwave Parts - Select From 234 Models

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