Sharp LC-32LD135K (serv.man2) Service Manual ▷ View online
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LC-32LD135
Backlight power supply should be in panel specs. Please check Q33, shown below; also it can be checked
TP53.
TP53.
STBY_ON/OFF_NOT should be low for tv on condition, please check Q11’s collector.
B. CI Module Problem
Problem: CI is not working when CI module inserted.
Possible couses: Supply, suply control pin, detect pins, mechanical positions of pins.
Possible couses: Supply, suply control pin, detect pins, mechanical positions of pins.
CI supply should be 5V when CI module inserted. If it is not 5V please check CI_PWR_CTRL, this
pin should be low.
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SOFTWARE UPDATE
Please check mechanical position of CI module. Is it inserted properly or not?
Detect ports should be low. If it is not low please check CI connector pins, CI module pins.
Detect ports should be low. If it is not low please check CI connector pins, CI module pins.
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C. Staying in Stand-by Mode
Problem: Staying in stand-by mode, no other operation This
problem indicates a short on Vcc voltages. Protect pin should be logic high while normal operation. When
there is a short circuit protect pin will be logic low. If you detect logic low
on protect pin, unplug the TV set and control voltage points with a multimeter to find the shorted voltage
to ground.
there is a short circuit protect pin will be logic low. If you detect logic low
on protect pin, unplug the TV set and control voltage points with a multimeter to find the shorted voltage
to ground.
D. IR Problem
Problem: LED or IR not working
Check LED card supply on MB95 chasis.
Check LED card supply on MB95 chasis.
E. Keypad Touchpad Problems
Problem: Keypad or Touchpad is not working Check keypad supply on MB95.
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