Trouble shooting guide
I.
DVD player is stuck; buttons and remote controller are invalid; picture is
frozen or blurred
Causes: (i) bend or scratched disc
(ii) environment temperature exceeds 0-45
℃
(iii) improper operations
(iv) violent electricity interference
Solutions: Switch the player and start again
II.
No picture, no sound, no indicators
Causes: power supply faults:
(i) improper connection of power plug
(ii) power voltage is out of the range of 90V-240V
(iii) fuse is broken
Solutions: (i) exclude man-made faults
(ii) Check D7 part
(iii) Check IC1
(iv) check IC2 or short circuit in output
III.
The player works properly except no picture and no sound
causes: faults may come from audio D/A, audio circuits
solutions: (i) check if there are signal outputs in P113, P114,P115,P116,P118
of ZR36768; if no, ZR36768 does not work
(ii) Check if there are audio inputs in each input root; if no, D/A or
audio power is down
(iii) check if there are signal output in each output root
IV.
the player works properly, except no picture or bad picture
causes: faults may come from video D/A or video circuits
solutions: (i) check if there are digital signal outputs from PIN158- -162
roots in ZR36768; if no, ZR36768 does not work properly
(ii) check if there is video signal output in PCM1606
(iii) output circuits works improperly
V.
the discs can be loaded but can not be read; picture is normal
causes: faults may come from laser head or servo parts
solutions: (i) clean laser head
(ii) change laser head or loader
