- 2-4 -
Fails to initial read
1.3V
A
B
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
Does laser light?
Disc motor turns.
Does RF
waveform
appear?
Test Pin(RF)
Does tracking
servo work?
Lower envelope
of Test Pin(RF)
waveform is flat.
Does signal
appear at Test
Pin(TEO)?
Does signal appear at IC 502
Pin and Pin ?
Does GFS (IC503 pin 25)
show as below?
Is rotation normal?
Is there no dropout of RF
signal?
Does TE2 signal
appear at pin
of IC501?
Defective IC
801, pick up
and/or open
wire.
Detective pattern.
Defective IC 501
and/or IC 502
Defective pick-up
and/or connector.
Defective IC 503.
Scratch in disc
initial read area.
Defective pick-up
adjustment focus offset.
53
26
27
Summary of Contents for FFH-185A
Page 17: ...2 13 2 14 FRONT POWER SCHEMATIC DIAGRAM ...
Page 18: ... TUNER SCHEMATIC DIAGRAM 2 15 2 16 ...
Page 19: ... CDP SCHEMATIC DIAGRAM 2 17 2 18 ...
Page 21: ...PRINTED CIRCUIT DIAGRAMS MAIN TUNER P C BOARD SOLDER SIDE 2 21 2 22 ...
Page 22: ... MAIN TUNER P C BOARD COMPONENT SIDE 2 23 2 24 ...
Page 25: ... 2 29 CD MAIN P C BOARD LED P C BOARD ...
Page 27: ... 2 31 KIA7805 P PI KIA7815 P PI BU1923 FOR RDS RBDS ...
Page 36: ... 4 2 MEMO ...
