Zenith XBV613 Service Manual - Page 56

Zenith XBV613 - DVD/VCR Combination Manual

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D Focus ON OK? YES NO Proper signals on A,B,C,D NO Check connections between of ZR36882 ZR36882 and pick-up head. YES Check FE signal on ZR36882 NO Check the FOCUS_S connection on ZR36882 and motor driver. YES Check FOCUS_S signal on ZR36882 Track On OK? YES NO Normal TE Signal on NO ZR36882? YES Properly TRACK_S signal NO on ZR36882? YES Check the related circuit on ZR36882 Check the TRACK_S connection on ZR36882 and motor dirver. TACT+ & TACT- output NO Check the tracking control properly? amp circuit on motor driver. YES Check cable connection on pick-up head. Disc is play ? YES E NO Check RF signal waveform. 3-63

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3-63
D
Proper signals on A,B,C,D
of ZR36882
Focus ON OK?
Track On OK?
Disc is play ?
E
NO
NO
NO
YES
YES
YES
YES
YES
Check connections between
ZR36882 and pick-up head.
NO
Check FE signal on
ZR36882
YES
Check the FOCUS_S
connection on ZR36882
and motor driver.
NO
Check FOCUS_S signal
on ZR36882
YES
YES
Check the TRACK_S
connection on ZR36882
and motor dirver.
NO
Check the tracking control
amp circuit on motor driver.
NO
Normal TE Signal on
ZR36882?
NO
Check the related
circuit on ZR36882
Properly TRACK_S signal
on ZR36882?
TACT+ & TACT- output
properly?
Check cable connection on
pick-up head.
Check RF signal waveform.