Garrard RC60 Automatic 78 Rpm Record Changer Instruction Manual

Garrard RC60 Automatic 78 Rpm Record Changer

GENERAL INFORMATION

The Garrard Model RC60 is a single-post mechanism, designed to automatically play up to eight 10-inch or 12-inch records, mixed in any order. This changer will shut off automatically after the last record. The changer has a specially designed spindle, which will not enlarge record holes and prevent slipping and skidding of records on the turntable. Due to the wide voltage range of the motors, it may be necessary for some power supplies to make a slight re- adjustment of the speed indicator lever so that the turntable will have the proper speed of 78 R.P.M.

Manufactured by THE GARRARD ENGINEERING AND MANUFACTURING CO., LTD.

• SWINDON:
• WILTS: ENGLAND

Distributor:
GARRARD SALES CORPORATION, 315 BROADWAY, NEW YORK 7, NEW YORK.

OPERATING INSTRUCTIONS

1. If a permanent needle is not used in the pickup crystal, insert a needle of a good type. Turn the head of the pickup arm to insert the needle.
2. Raise the overarm (9) to its upward position.
3. Place the record spindle (15) in position, the sloping part leaning toward the recording platform (17).
4. Place any number of up to eight records, in any order, on the record spindle, letting them rest on the platform.
5. Lower the overarm (9) to the records.
6. Move the control knob (49) to the “Start” and “Reject” position. The changer will now play the entire stack of records and on completion of the last record, the pickup arm will return to the rest post and will automatically shut off.
   • Any record not required to be played may be automatically rejected by moving the control knob (49) to the “Reject” position and releasing.
   • The changer can be stopped by moving the control knob to the “Stop” position. Connected to the control lever and knob (49) is the reject mechanism.
   • If the changer is switched off while playing a record, the reject comes into operation when switching on again. If there are no records on the platform when the changer is switched on, the pickup arm will swing out to its rest position and the changer will automatically shut off; otherwise, the next record will drop to the turntable and will be played.

NOTE:
If the changer has been stopped for any reason, with the pickup arm not on the rest, the arm should not be interfered with but the motor should be restarted and the arm allowed to return to the rest.

Repeating Records
A record may be repeated by removing all the records on the offset step of the spindle and leaving the overarm in a raised position.

Playing Record Manually
Home recordings, warped and odd-sized records should be played manually:

1. Raise the overarm (9) until it snaps into position.
2. Place a record on the turntable.
3. Push down on the pawl (18) and move the control knob to the “Start or Reject” position. Hold the pawl in the position until the platform (17) moves back.
4. Hold the pickup arm off the turntable until the change cycle is completed; then place it on the record.
5. To shut the mechanism off, move the control knob to the “off” position and place the pickup arm on the rest post.

CHANGE CYCLE

The change cycle may be started by either moving the switch control lever and knob (49) to the “Stop” or “Reject” position or by any fast lead-in movement of the pickup arm as it comes to within 2⅜” of the spindle.

1. By moving the switch control lever (49) to the “Start” or “Reject” position, the switch link (50), which is connected to the control lever, is moved against the stud of the switch lever unit (53). This actuates the switch unit which, in turn, engages the switch (54) and starts the motor as-sembly. The switch lever unit is latched in position by the release lever (51). At the same time, the stud and finger of the switch link (50) contact and move the shutoff clutch lever (79) and the clutch tripping link (130) (seen in Fig. 4) from in front of the clutch lever (97). The shutoff lever (79) is latched in an out- ward position during the automatic operation by the shutoff clutch latch lever (81).
   NOTE: If the mechanism has been stopped automatically, the clutch lever (97) will be blocked by the shutoff clutch link (79). If in playing operation (at the end of a cycle), the clutch lever will be blocked by the clutch tripping link (130). See Fig. 4.

2. As the pickup arm moves into the fast lead-in. the groove of the record, the mechanism is tripped by the velocity tripping mechanism.

The clutch lever (97), no longer blocked, engages the pinion of the motor assembly (109), which is in constant rotation. This causes the platform cam unit (96), the swing cam unit (92), and the lifting cam unit (86), which are fastened to the camshaft (85), to turn as one unit. One complete revolution of the unit takes the changing mechanism through a complete change cycle. The lifting lever unit (84) pushes down on the friction disc (91) as it rides around the lifting cam (86), thereby actuating the lifting tube unit and raising the pickup arm from the record. The swing cam (92) has now travelled far enough to move the lateral cam lever (129) against the pickup swing lever (87), thus swinging the pickup arm clear of the records. As the swing lever (87) moves out, it carries the positioner lever (89) with it by the spring (87A). This brings the positioner lever in contact with the pin on the selector lever (82). The automatic trip link (40) is carried with the swing lever (87) by the finger (87B), thus re-setting the velocity tripping mechanism. The platform cam lever (126), following the cam (96), actuates the platform (17), which, as a result, selects the records, sets the position for the pickup arm set down, and pushes the records off the spindle.

• The lateral cam lever (129), following cam (92), now moves away from the swing lever (87), thereby allowing spring (87A) to move the swing lever and, in turn, the pickup arm in until the eccentric pin (88) contacts the positioning lever (89), which positions the pickup arm for set down.
• The friction of the lifting lever pad against the friction disc (91) holds the pickup arm in place as the pickup arm is lowered to the record by the action of the lifting lever (84).
• The clutch lever (97) of the cam (96) moves against the clutch tripping link (130) disengaging the clutch lever from the pinion.
• The overthrow lever (123) now engages the pin of the swing cam (92) preventing any backward movement of the unit. This completes the change cycle.

Determination of the Set-Down Point and Record Selection
With the presence of a 12-inch record on the platform (17), the pawl (18) will be depressed. This prevents the platform from being blocked from any backward movement; therefore, as the cam (96) rotates, the spring (68A) pulling on the platform lever (68) causes the pin of the cam lever (126) to follow the inner cam track of cam (96). As a result, the platform moves backward, moving the pawl (18) from under the 12-inch record. Connected to the platform unit is the selector operation lever (69), which, in turn, actuates the following connected parts, the delay lever (62), inter. selector lever (58), selector link (57), and the selector lever (82). This moves the pin of the selector lever (82) to point “A” of the positioner lever (89), thereby determining the 12-inch set-down point for the pickup arm.

The platform now moves forward. The pawl (18), now in a raised position, moves against the record pushing it off the platform and spindle dropping it to the turntable. As the platform continues to move forward, it is tilted down by the action of the tilting cam lever (127). This is done to prevent the pawl (18) from striking the next record and pushing it off the platform; that is if the next record is a 10-inch record. The platform now returns to its normal raised position.

With a 10-inch record on the platform, the pawl (18) will be in its normal raised position; therefore, any backward movement of the platform will be blocked by the platform stop (64) as the end of the pawl moves against it. Blocking of the platform causes the platform cam lever (126) to move around the cam instead of in the groove. The platform now moves forward pushing the 10-inch record off the platform, thus dropping it to the turntable. As the platform moves forward, the positioning mechanism is actuated, moving the pin of the selector lever (82) into step “B” of the positioner lever (89), thereby setting the mechanism for a 10-inch set down.

Velocity Trip
The finger (87B) of the pickup swing lever (87) contacts and moves the automatic trip link (40) as the pickup arm moves to approximately 2⅜” of the spindle. The trip link then actuates the friction plate (41), which, in turn, pivots (by friction) the operation lever (44) and trip lever (47) toward the striker. The motion is very slow due to the needle following the playing groove of the record. This allows the striker to slightly hit the rubber pad (46) of the trip lever (47), causing the operation lever to slip on the friction plate; however, when the pickup arm moves into the fast lead-in groove of the record, the trip lever will be moved into the path of the striker. The striker then hits the trip lever (47) causing the clutch release lever (48) and the tripping link (130) to be actuated.

This trips the mechanism and starts a new cycle.

Automatic Shutoff

• Normally, the shutoff link (102) is blocked by the shutoff release lever (56); i.e., when there are records on the spindle or the overarm is in a raised position.
• When the last record has dropped to the turn- table, the overarm drops down pushing the shutoff pin (13) against the shutoff release lever (56). This pivots the release lever (56) away from the shutoff link (102). When the last record has finished playing, the mechanism is tripped returning the pickup arm to a rest position on the armrest (38). At this point a boss on the platform cam (96) moves against the shutoff actuating lever (101), and, as a result, the actuating lever, through the spring (98), pulls the shutoff link (102) against the switch release lever (51) and the shutoff clutch link (132). The release lever shuts off the switch while the clutch link trips the shutoff clutch levers (81) and (79), thereby allowing lever (79) to block the cam clutch lever (97) and disengage the cam clutch lever from the pin-ion; this completes the shutoff cycle.

ADJUSTMENTS

Pickup Arm Height
If the pickup arm does not set down on the first record, the following adjustment can be made:

1. Loosen the set screw (91A) and rotate the ad- justment collar (91B). Counterclockwise will lower the pickup arm while a clockwise rotation will raise the arm.
   • (a) This adjustment should be made with the changer out of the cycle.

CAUTION:
There should be no friction between the pad of the lifting lever (84) and the friction disc (91) when the changer is out of cycle. This is to allow free movement of the pickup arm across the record.

If the pickup arm does not clear the top record of a stack of eight records or the top of the armrest (38), the following adjustment can be made:

1. Loosen the set screw (90) and turn the friction disc (91). Counterclockwise will lower the arm; clockwise will raise the arm. This adjustment is made when the pickup arm is at its maximum height during the change cycle. After the adjustment is made, tighten the set screw and rotate the turntable clockwise until the changer is out of the cycle. Check the pad of the lifting lever (84) and the friction disc (91); there should not be any friction between these two parts.

Pickup Arm Set-Down Point
If, for any reason, the pickup lever unit (87) has been removed, the pickup set-down point may be readjusted by the following procedure:

1. Place a 10-inch record on the turntable.
2. With the changer out of the cycle, place the pickup arm so that the needle will be in the starting groove of the record.
3. Push up the lever unit (87) so that it does not bind on any parts.
4. Move the positioner lever (89) against the pin of the selector lever (82), being sure that the pin of the selector lever engages the positioner lever at point “B” ofthe lever (89).
5. Tighten the set screws and check the adjustment.
6. A finer adjustment can now be made by turning the eccentric pin (88).
   • (a) To make this adjustment, place the pickup arm on the rest. The eccentric pin may be adjusted through the hole in the base plate. A quarter of a turn in either direction will give the maximum adjustment. After this adjustment has been made, switch on the changer and check the dropping position and readjust, if necessary.

Record Platform Adjustment

• The platform has been properly adjusted at the factory to accommodate records of average size.
• If, for any reason, the platform and its coupling links (70) have been removed, they may be re- placed and properly adjusted, as seen in Figures 3 and 5.
• The bottom link, which pivots at the bottom of the tilting lever (71), controls the platform lift, while the top link controls the distance the plat- form moves inward.

Automatic Trip
If the changer does not trip when the pickup arm moves in the eccentric groove of the record, the tension of the friction spring (42) must be decreased. To make this adjustment, remove the turn- table and turn the friction-adjusting screw in a counterclockwise direction; about half a turn is all that should be necessary. If the changer trips before the end of a record, the tension of the spring should be decreased.

TROUBLES

Pickup Arm Height Incorrect

1. See adjustment on “Pickup Arm Height.”

Pickup Does Not Land Correctly on the Record

1. See adjustment on “Pickup Arm Set-Down Point.”
2. Spring (87A) is loose or missing.
3. Binding in the pickup arm spindle.

Continuous Cycling
The continuous cycling of the changer may be caused by:

1. Spring (131) of the clutch tripping link miss- ing. Fig. 4.
2. Reject mechanism binding.

The Changer Does Not Trip at the End of a Record

1. See adjustment on “Automatic Trip.”
2. Spring (78) missing.

The Changer Does Not Shut Off After Last Record

1. Spring (98) is loose or missing.
2. Spring (80) is loose or missing.
3. Lever (79) binding.

At the End of a Change Cycle, a Continuous Clicking Is Heard

1. Spring (124) of the overthrow lever (123) loose, allowing backlash of the control shaft and units. This allows the clutch lever (97) to slip over the teeth of the pinion.

LUBRICATION

Use a few drops of light machine oil on the following parts:

1. The ball bearings (29) and (33) of the pickup arm spindle.
2. The motor bearings are made accessible when removing the turntable.

Use a light grease on the following:

1. Switch lever unit 53.
2. Shutoff switch lever release (51).
3. Switch link (50).

CAUTION:
Do not let any oil come in contact with the friction plate (41). Avoid over lubrication.

PARTS LIST

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