Goldstar FFH-2165AX Service Manual TROUBLE

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• Connection : 1. IC501 pin 54.(TEO)

2. IC501 pin 50

• Inspection : Check tracking servo

circuit.(RWD)

• Connection : 1. IC501 pin 54 .(TEO)

2. IC501 pin 50

• Inspection : Check tracking servo

circuit.(RWD)

FOCUS GAIN TRACKING GAIN

• Connection : 3. IC502 pin 1 and 2 .

Test disc : YEDS-43

• Inspection : Confirm focus servo circuit.

• Connection : 3. IC502 pin 26 and 27 .

Test disc: YEDS-43

• Inspection : Confirm focus servo circuit.

TRACKING ERROR(REW) TRACKING ERROR(FWD)

MAJOR WAVEFORM

1

2

3

4

1

2

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TRACKING COIL DRIVE E.F. BALANCE

• Connection : 1. IC501 pin 54 . (TEO)

2. IC501 pin 50

• Inspection : - Confirm tracking servo circuit.

- Check IC501 (Cold solder joint
or short circuit)

• Connection : 1. IC501 pin 54 .

• Inspection : Confirm tacking servo balance

deviation rate

READING

• Connection : 7. IC501 pin

48

.

8. IC501 pin

40 (FOK)

• Inspection : Check IC502 pin

4 to IC501 PIN

48 (Pattern defective)

1

7

8

- 13 -

• Connection : 9. IC502 pin 17 and 18

• Inspection : - Check IC501 pin 43 to IC502

pin 20 (Pattern defective)

- Check voltage. (IC502 pin 20 )

• Connection : 10. IC501 pin 74 .

• Inspection : Check objective Lens of Pickup

clear or not

• Connection : 11. IC502 pin 1 and 2 .

• Inspection : - Is focus search signal output to

IC501 pin 48 ?

• Connection : 12. IC501 pin 33 .

• Inspection : Check IC503 and surrounding

circuit (Cold solder joint or short
circuit)

9

11

12

10