JVC XV-N650BEU Service Manual page 20

D
Focus on OK?
YES
Track on OK?
YES
Disc is play?
YES
E
1-20 (No.YD119)
Proper
NO
signals on A, B, C, D of
ZR36888
YES
Check FE signal
on ZR36888
YES
Check FOCUS_S signal
on ZR36888
Normal
NO
TE signal on
ZR36888?
YES
Properly
TRACK_S signal on
ZR36888?
YES
TACT+ & TACT-
output properly?
YES
Check cable connection on
pick-up head.
NO
Check RF signal waveform.
Check connections between
NO
ZR36888 and pick-up head.
Check the FOCUS_S
NO
connection on ZR36888
and motor driver.
Check the related
NO
circuit on ZR36888
Check the TRACK_S
NO
connection on ZR36888
and motor driver.
Check the tracking control
NO
amp circuit on motor
driver.