Sharp LC-13B2UA, Service Manual

Page: 22 / 64

LC-13B2UA
22
TROUBLE SHOOTING TABLE
No
No Power (Power LED indicator still in red)
Go to the adjustment process mode.
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?
1
INCH SIZE 13
MODEL B2UA
SYSTEM AUTO
NTSC PWM FREQ OCO
PAL PWM FREQ OBD
NTSC PWM DUTY 0
PAL PWM DUTY 0
TV GAIN OFF
ERROR NO RESET 5
V-CHIP 1
CANADIAN VCHIP OFF
B2UA VER 1.xx
Check the following items:
1
Back light lamp
2
Inverter Circuit
(Inverter PWB and Main 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
(Terminal PWB and Main 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.