Read Sharp LC-32GD1E (serv.man8) Service Manual online
25
LC-32GD1E
LC-37GD1E
LC-37GD1E
A
data bit is missing.
When P
A
TTERN1 is selected from
the adjustment process menu and it
is set to 2, is the gradation pattern
displayed correctly?
Connect SC4651 and
SC4652(P
ANEL), and check the
IC4501(LCD-CONT) peripheral
When P
A
TTERN1 is selected from
the adjustment process menu and
P
A
TTERN3 is set to 1, is the
gradation pattern displayed
correctly?
Check IC4702, IC4902(64M-
SDRAM), and their peripheral
When P
A
TTERN3 in the adjustment
process menu is set to 4, is the
pattern correctly displayed at one-
dot intervals?
Check between IC4701 and
IC4501(QS-DRIV).
When P
A
TTERN3 in the adjustment
process menu is set to 5, is the
pattern correctly displayed at one-
dot intervals?
Check the IC2206 peripheral circuit.
Check between IC4901(QS-DRIV)
and IC4501(LCD-CNT).
No
Ye
s
No
Ye
s
No
Ye
s
Ye
s
No
When the QS driver is activated,
noise is seen in the images.
Check IC4701(QS-DRIV),
IC4901(QS-DRIV), and the
peripheral circuits.
Are the GND1 PWB and the LCD
CONT
PWB properly connected
with a cable?
Is the OSTEMP
AD value on the
third page of the process
adjustment mode set to 255?
Connect them properly or replace
the cable.
Are the GND1 PWB and the GND2
PWB properly connected with a
board-to-board connector?
(GJ-Connector)
Connect them properly
.
Is 5V present at pin 62 (OSTEMP)
on IC2004 (the microcomputer)?
The thermistor on the GND PWB is
defective.
Pin 62 on IC2004 (the micro
computer)is defective.
(GV
-Connector)
No
Ye
s
No
Ye
s
No
Ye
s
Ye
s
No
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