Sharp LC-32LE340E, Service Manual

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LC-32LE340/343
LC-40LE340/343
49
STBY_ON/OFF_NOT should be high for standby condition, please check R203.
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.
50
x CI supply should be 5V when CI module inserted. If it is not 5V please check
CI_PWR_CTRL, this pin should be low.
x Please check mechanical position of CI module. Is it inserted properly or not?
x
Detect ports should be low. If it is not low please check CI connector pins, CI module
pins.
51
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.
Problem: CI is not Working when CI module inserted
Possible causes: Supply, supply control pin, detect pins, mechanical position 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.
●
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.
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LC-32LE340/343
LC-40LE340/343