Sharp LC-32LE700E (serv.man8) Service Manual ▷ View online
LC-32/40/46LE700E/RU/S,LU700E/S,LX700E/RU,LC-52LE700E/RU/S
6 – 17
<During external connection> No picture on the monitor (3)
No picture from EXT1 appears on EXT2-connected monitor.
Is CVBS signal output into pin (19) of EXT2 (SC502)?
YES
Check the setting of an external input device that connects with
EXT2.
EXT2.
NO
Is CVBS signal input to pin(1) of IC508 from pin(AJ24/
CVBS_MONI_OUT) of IC3302
(Digital AV decode & Main CPU)?
CVBS_MONI_OUT) of IC3302
(Digital AV decode & Main CPU)?
YES
Check the IC508 and their peripheral circuits.
NO
Is CVBS signal sent to pin(AG29/SC1_CVBS/Y) of IC3302
(Digital AV decode & Main CPU) from EXT1(SC503)?
(Digital AV decode & Main CPU) from EXT1(SC503)?
YES
Check the IC3302 and their peripheral circuits.
NO
Is CVBS signal sent to pin (20) of EXT1(SC503)?
YES
Check the line between EXT1(SC503) and IC3302.
NO
Check the setting of an external input device that connects with
EXT1.
EXT1.
<During external connection> No picture on the monitor (4)
No picture from EXT8 appears on EXT2- connected monitor.
Is CVBS signal output into pin(19) of EXT2 (SC502)?
YES
Check the setting of an external input device that connects with
EXT2.
EXT2.
NO
Is CVBS signal input to pin(1) of IC508 from pin(AJ24/
CVBS_MONI_OUT) of IC3302
(Digital AV decode & Main CPU)?
CVBS_MONI_OUT) of IC3302
(Digital AV decode & Main CPU)?
YES
Check the IC508 and their peripheral circuits.
NO
Is CVBS signal input to pin (AE29/CVBS__IN) of IC3302 from
J505?
J505?
YES
Check the IC3302 and their peripheral circuits.
NO
Is CVBS signal sent to pin (6) of EXT8(J505)?
YES
Check the line between EXT8(J505) and IC3302.
NO
Is V3_PLUG detection signal input to pin (AJ11/CVBS/PLUG) of
IC3302 from pin(7) of EXT8 (J505)?
IC3302 from pin(7) of EXT8 (J505)?
YES
Check the line between EXT8(J505) and IC3302.
NO
Check the setting of an external input device that connects with
EXT8.
EXT8.
LC-32/40/46LE700E/RU/S,LU700E/S,LX700E/RU,LC-52LE700E/RU/S
6 – 18
LCD failure (1)
Does a single or several
vertical stripes appear
on the LCD screen?
vertical stripes appear
on the LCD screen?
Does a single or several
horizontal stripes appear
on the LCD screen?
horizontal stripes appear
on the LCD screen?
Do luminescent or black
dots appear on the
screen?
dots appear on the
screen?
Is the on-screen image
rippling or distorted?
rippling or distorted?
Is there any portion
which some screens
were darkish or
became whitish?
which some screens
were darkish or
became whitish?
Replace the LCD panel.
LCD failure (2)
The backlight func-
tions. Does not the
image come out in the
LCD screen
(screen black)?
tions. Does not the
image come out in the
LCD screen
(screen black)?
Does the entire LCD
screen look whitish all
over?
screen look whitish all
over?
Does the QS drive func-
tion?
tion?
Are the data bit drop-
out?
(No solution even when
turning on and off the QS
drive)
out?
(No solution even when
turning on and off the QS
drive)
Is the gamma correc-
tion as specified?
tion as specified?
Replace the LCD_CONT_UNIT.
LC-32/40/46LE700E/RU/S,LU700E/S,LX700E/RU,LC-52LE700E/RU/S
6 – 19
[2] LED flashing specification at the time of the error
Display method
• Refer to Table 1.
• Make the OPC LED flash using the [MENU] key on the remote control since the display for service persons is identified by the number of flashings
(once to 5 times).
Even if the [MENU] key is pressed again, it does not return to the display for customers (only the power LED flashes).
• After recovering from an error, if the same error cannot be generated again, refer to MONITOR ERR CAUSE on the adjustment process screen.
LED flashing method
• Synchronize the phases of the power LED and OPC LED.
• If the LEDs have different number of flashings, adjust the flashing cycle to that where the LED flashes more times.
Table 1. Concrete flashing pattern
* 1: For details, refer to ERROR STANDBY CAUSE on the adjustment process screen.
* 2: If the boot section is abnormal, there is no flashing (flashing disabled).
<Flashing example for customers>
Power
<Flashing example for service persons>
Power
OPC
(Displayed by the
specific operation)
(Displayed by the
specific operation)
Item
For customers
For service persons
Cause
Power
OPC
Power
OPC
Inverter/Lamp system failure Red flashes once
Off
Red flashes once
Flashes once
Lamp error
Power PWB failure (Power
Red flashes once
Off
Red flashes once
Flashes once
AC_DET error
failure, etc.)
Flashes twice
UR+13.5V error
Flashes 3 times
D3.3V error
Flashes 5 times
Panel power supply error
Main PWB failure
Green flashes once
Off
Green flashes once
Flashes once
Initial communication error
(Communication failure, etc.)
Flashes twice
Start-up confirmation
communication error
communication error
Flashes 3 times
Regular communication error
Flashes 5 times
Other communication error
Others
Green flashes twice
Off
Green flashes twice
Flashes once
Temperature error
Flashes twice
Sync error
Flashes 3 times
Notification from the main
microprocessor (*1)
microprocessor (*1)
VerUP executing
Orange flashes once Off
Orange flashes once Off
Version upgrading
VerUP succeeded
Power green/OPC flash alternately Power green/OPC flash alternately
Version upgrade succeeded
VerUP failed
Green/Red flash
Off
Green/Red flash
Off
Version upgrade failed
alternately
alternately
System
Red flashes 3 times
Off
Red flashes 3 times
Off
Mounting discrimination
connector unplugged
connector unplugged
ROM data failure
Green/Red flash
Off
Green/Red flash
Start-up after failing version
alternately
alternately
upgrade (*2)
300ms
300ms
1500ms
300ms
300ms
1500ms
LC-32/40/46LE700E/RU/S,LU700E/S,LX700E/RU,LC-52LE700E/RU/S
6 – 20
MONITOR ERR STBY table
LED flashing timing chart at the time of the error
1) Power LED
2) Inverter/Lamp failure details (Power red LED flashes once and OPC (preset) LED flashes)
Outline: Communication/Power failure detected by the monitor microprocessor (IC2002) is stored on EEPROM,
states can be confirmed in the adjustment process mode.
Location: Page 1/16 of the adjustment process mode: MONITOR ERR CAUSE
“0” if there is no error. It is cleared to 0 on the last page of the adjustment process mode.
Display Error
description
02
Start-up communication error 2
Initial communication from the main CPU is not received.
03
Start-up communication error 3
Only the initial communication is received.
04
Start-up communication error 4
Until panel information request reception
05
Start-up communication error 5
Until initialization completion reception
06
Start-up communication error 6
Until version notification transmission
07
Start-up communication error 7
Until start-up information notification transmission
08
Start-up communication error 8
Until start-up information response reception
09
Start-up communication error 9
Until time-out setting reception
0A
Communication error A
REQ time-out
0B
Communication error B
Restart time-out during the beginning of time acquisition start-up
0C
Communication error C
Ending sequence time-out
0D
Communication error D
Preset start-up time-out during completion
0E
Communication error E
Download start-up time-out
0F
Communication error F
Time acquisition time-out
11
Communication error H
Regular communication time-out
16
Panel-related error
Lamp failure
1A
Other error 2
Monitor temperature failure
1D
Power supply error 1
PS_ON(AC_DET) failure
1E
Power supply error 2
D_POW(DET_12V) failure
1F
Power supply error 3
D_POW(DET_D3V3) failure
21
Power supply error 5
Panel power failure
23
Other error 3
Error standby request from the main CPU
Error type
Power LED operation (1 cycle)
Note: Pins are monitor microprocessor pins (IC2002).
Inverter/Lamp failure
Red flashes once
Red flashes once
H: Red On
L: Off
Refer to “Inverter/Lamp failure details”. OPC_LED flashes by
pressing the [MENU] key on the remote control.
pressing the [MENU] key on the remote control.
Power failure
Red flashes twice
Red flashes twice
H: Red On
L: Off
Refer to “Power failure details”. OPC_LED flashes by pressing the
[MENU] key on the remote control.
[MENU] key on the remote control.
Communication
failure with main
CPU
Green flashes once
failure with main
CPU
Green flashes once
H: Green On
L: Off
Refer to “Communication failure details”. OPC_LED flashes by
pressing [MENU] key on the remote control.
Communication line failure or main CPU communication failure.
pressing [MENU] key on the remote control.
Communication line failure or main CPU communication failure.
Others
Green flashes twice
Green flashes twice
H: Green On
L: Off
Refer to “Other failure details”. OPC_LED flashes by pressing the
[MENU] key on the remote control.
[MENU] key on the remote control.
Error type
OPC (preset) LED operation (1 cycle)
Note: Pins are monitor microprocessor pins unless otherwise
specified (IC2002).
Lamp failure
Flashes once
Flashes once
H: On
L: Off
ERR_PNL(40pin): Abnormal L. Confirmed after 5 consecutive
detections at 1 second intervals (detected only when the backlight
is on).
Note that after five detection counts, the lamp cannot be activated
except in the monitoring process. (For the first time, only the
inverter is reset, and error OFF is not activated.)
Accumulated counts are cleared to 0 when the setting in the
adjustment process is made, when AC_ON is performed with
[CH_DOWN] and [VOL_UP] on the unit down or after continuous
illumination for 3 minutes.
detections at 1 second intervals (detected only when the backlight
is on).
Note that after five detection counts, the lamp cannot be activated
except in the monitoring process. (For the first time, only the
inverter is reset, and error OFF is not activated.)
Accumulated counts are cleared to 0 when the setting in the
adjustment process is made, when AC_ON is performed with
[CH_DOWN] and [VOL_UP] on the unit down or after continuous
illumination for 3 minutes.
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