Sharp LC-32P50E Service Manual page 44

LC-26P50E
LC-32P50E
LC-37P50E
TROUBLE SHOOTING TABLE
Is the power supplied to M IN-PWB?
(P1800: +14V/UR4.5V/UR+3.5/BU+3.3V)
YES
djustment process menu: When the P TTERN
1 is set to 2, is the gradation pattern displayed
correctly?
YES
Is the output signal of IC4601
NO
(LVDS) sent correctly?
YES
Is the input signal of IC4601
NO
(LVDS) sent correctly?
YES
Is pin 25 "LVDS-PD" of IC4601
NO
(LVDS) "H"?
YES
Check IC4601 (LVDS) and its
peripheral circuits.
djustment process menu: When the P TTERN 1 is set to 2, is
the gradation pattern displayed correctly?
When the QC drive is turned on or off in Menu-Option-Quick
Shoot, is missing of data bit resolved?
Go to ÒWhen the QC drive is turned on, noise appears in the
moving pictureÓ.
he backlight turns on, but no picture appears on the LCD.
NO
Check IC4502 (LCD-CTL).
Check IC330
(V-PROCESSOR).
Check IC2007 (CPLD).
data bit is missing. (Gradation-related)
NO
YES
NO
YES
(Continued)
Is the VLS voltage (VLS15V) of
the IC4104 (DC/ C-CONV)
output normal?
YES
Is the VGL voltage (-6V) of the
IC4104 (DC/ C-CONV) output
normal?
YES
Is the VGH voltage (34V) of the
IC4104 (DC/ C-CONV) output
normal?
YES
Check IC4502 (LCD-CTL).
Check the connection of SC4651 and SC4652 of LCD-P NEL-
FPC, IC4502 (LCD-CTL) and its peripheral circuits.
Check IC4601 (LVDS) and its peripheral circuits.
46
Check IC4104 (DC/ C-CONV)
NO
and its peripheral circuits.
Check IC4104 (DC/ C-CONV)
NO
and its peripheral circuits.
Check IC4104 (DC/ C-CONV)
NO
and its peripheral circuits.