Trouble Shooting Table - Sharp LC-15B2UA Service Manual

LC-15B2UA
LC-15B2UB

TROUBLE SHOOTING TABLE

No Power (Power LED indicator still in red)
Go to the adjustment process mode.
1
INCH SIZE
MODEL
SYSTEM
NTSC PWM FREQ
PAL PWM FREQ
NTSC PWM DUTY
PAL PWM DUTY
TV GAIN
ERROR NO RESET
V-CHIP
CANADIAN VCHIP
B2UA VER 1.xx
Move the cursor to ERROR NO RESET
and click on it (to reset to zero).
Turn off the power.
Is the power turned on again?
Check the following items:
1 Back light lamp
2 Inverter Circuit
(Inverter PWB and Digital PWB)
F6500, F6501, D6500, Q6500, Q6501, Q6502,
Q6503, Q6504, Q6505 and their peripheral parts
as well as pin (34) of IC1201.
3 Lamp error detection circuit
(Analog PWB and Digital PWB)
D3600, D3601, D3604, D3605, Q3600, Q3601 and
their peripheral parts as well as pin (42) of IC2001.
Note:
This model is equipped with the lamp error detection function
that detects the current flowing into the fluorescent lamp and
protects the backlight lamp drive circuit.
If a lamp error is detected, the microprocessor interrupts the
unit and the ERROR NO RESET setting will go up.
When the ERROR NO RESET setting has reached "5", the
microprocessor turns and keeps off the unit's power. To
resume the power, take the above procedure to clear the
ERROR NO RESET setting.
15
B2UA
AUTO
OCO
OBD
0
0
OFF
5
1
OFF
No
24