Zenith XBV613 Service Manual - Page 55
Zenith XBV613 - DVD/VCR Combination Manual
UPC - 719192169715
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C Laser turns on when reading disc? YES NO LD_DVD or LD_CD output properly? NO Check the laser power circuit on ZR36882 and connecting to power transistor. YES Collector voltage of power NO transistor is OK? YES Check cable connection between transistor ouput and pick-up head. Check the related circuit on laser power transistor Put disc in? YES Disc ID is correct? YES NO Laser off NO Proper RF signal on NO ZR36882? YES Check LD_DVD & LD_CD signal Check the related circuit on ZR36882 RFL signal. Does spindle rotate? YES D NO Proper SPINDLE_S signal NO on ZR36882 YES SP+ & SP- output properly? NO YES Check the cable connection between spindle and main PCBA. Check SPINDLE_S related circuit on ZR36882. Check the spindle control amp circuit of motor driver. 3-62