DOWNLOAD Sharp LC-40LE820E (serv.man5) Service Manual ↓ Size: 914.97 KB | Pages: 16 in PDF or view online for FREE

LC-40/46/52LE820E, LC-40/46LU820E

7 – 13

• Refer to Table 1.

• LED that can be used is only one of the central icons.

This expresses the error situation by combining blinking at low speed and blinking at high speed.

• For this model, the blinking pattern displayed first is only a low-speed blinking.

This expresses a rough content of the error.

• For this model, details are displayed by high-speed blinking by pushing remote control MENU key.

This expresses details of the error.

Details are distinguished by the blinking frequency.

• It doesn't return to the outline display again (blink at low speed) by pushing the MENU key (The toggle is not done).

Please confirm “MONITOR ERR CAUSE” of the adjustment Process mode (1/21), when the error doesn't reproduce by having returned from the
error. 

• The process of the upgrade is expressed by the brightness of point LED that smoothness changes.

• The upgrade completion is expressed by the LED brightness that changes in a staircase pattern.

Central icons

By pushing remote control MENU key.

400ms

400ms

1600ms

OFF

ON

Central icons

1600ms

300ms

100ms

400ms

400ms

1600ms

OFF

ON

Central icons

500ms

500ms

OFF

ON

Central icons

1000ms

1000ms

1000ms

1000ms

OFF

ON

LC-40/46/52LE820E, LC-40/46LU820E

7 – 14

*2: It depends on the system. The power supply error suitable for the product is defined.

*3: For details, refer to ERROR STANDBY CAUSE on the adjustment process screen.

*4: If the boot section is abnormal, there is no flashing (flashing disabled).

Lamp system failure  Flashes once 

—

Flashes once 

Flashes once 

Lamp error

Power PWB failure

Flashes twice 

—

Flashes twice 

Flashes once 

Power Error 1 AC_DET error (*2) 

(Power failure, etc.)

Flashes twice 

Power Error 2 UR+13.5V error (*2) 

Flashes 3 times 

Power Error 3 D3.3V error (*2) 

Flashes 5 times 

Panel power supply error

Main PWB failure 

Flashes 3 times 

—

Flashes 3 times 

Flashes once 

Initial communication error

(Communication Flashes 

twice 

Start-up confirmation communication error

failure, etc.) 

Flashes 3 times 

Regular communication error

Flashes 5 times 

Other communication error

Others 

Flashes 4 times 

—

Flashes 4 times 

Flashes once 

Temperature error

Flashes twice 

Sync error

Flashes 3 times 

Notification from the main microprocessor 
(*3)

Upgrade executing 

smoothness 

changes. 

—

—

—

Version upgrading

Upgrade completion

a staircase 

pattern. 

—

—

—

Version upgrade succeeded

Upgrade failed 

—

Flashing

(Continuous)

—

—

Version upgrade failed

ROM data failure 

—

Flashing

(Continuous)

—

—

Start-up after failing version upgrade (*4)

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 1/21 of the adjustment process mode: MONITOR ERR CAUSE “0” if there is no error. It is cleared to 0 on the page (2/21) of the 

adjustment process mode.

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_13V) 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

LC-40/46/52LE820E, LC-40/46LU820E

7 – 15

Lamp failure
low-speed blinking
Flashes once

H: ON

L: OFF

Refer to “Lamp failure details”.
LOW/High blinking by pressing the [MENU] key on the remote 
control.

Power failure
low-speed blinking
Flashes twice

H: ON

L: OFF

Refer to “Power failure details”.
LOW/High blinking by pressing the [MENU] key on the remote 
control.

Communication 
failure with main CPU
low-speed blinking
Flashes 3 times

H: ON

L: OFF

Refer to “Communication failure details”.
LOW/High blinking by pressing the [MENU] key on the remote 
control.
Communication line failure or main CPU communication failure.

Others
low-speed blinking
Flashes 4 times

H: ON

L: OFF

Refer to “Other failure details”.
LOW/High blinking by pressing the [MENU] key on the remote 
control.

Lamp failure

Flashes once
(High speed)

H: ON

L: OFF

ERR_PNL (40pin): Abnormal H.
Confirmed after 8 consecutive detections at 64ms intervals 
(detected only when the backlight is on).

NOTE: After 5 detection counts, the lamp cannot be activated 

except in the monitoring process.
To confirm the problem, “Lamp Error detection off-mode” 
is prepared.
This mode compulsorily starts the set disregarding the 
count.
Please refer to [ADJUSTMENT PROCEDURE - 7. Lamp 
Error detection]

PS_ON
AC_DET failure
Flashes once 
(High speed)

H: ON

L: OFF

AC_DET (72pin: Abnormal (L).
If error is detected during start-up or operation, the power is turned 
on again by interrupt handling (instantaneous blackout process-
ing).

SM_POW
Main 13V failure
Flashes twice 
(High speed)

H: ON

L: OFF

DET_13V (38pin): Abnormal (L). Main 13V is not applied.
If error is detected during start-up or operation, the power is turned 
on again by polling.

D_POW
Digital 3.3V failure
Flashes 3 times 
(High speed)

H: ON

L: OFF

DET_D3V3 (36pin): abnormal (L). Digital 3.3V is not applied.

If error is detected during start-up or operation, the power is turned 
on again by polling.

PANEL_POW
Panel 12V failure
Flashes 5 times 
(High speed)

H: ON

L: OFF

DET_PNL12V (35pin): abnormal (L).
DET_PNL12V is not applied.

Detection starts after receiving command from Panel Power ON. 
The power is turned off by polling.

100ms

400ms

1.6sec

LC-40/46/52LE820E, LC-40/46LU820E

7 – 16

Initial communication 
reception failure
Flashes once
(High speed)

H: ON

L: OFF

Initial communication from the main CPU is not received.
(Request for the monitor model No. is not received.)
→ Communication line failure or main CPU start-up failure

Start-up confirmation 
reception failure
Flashes twice 
(High speed)

H: ON

L: OFF

Start-up reason confirmation from the main CPU cannot be 
received.
(Startup communication until start-up reason notification command 
is not received.)
→ Main CPU start-up failure or monitor microprocessor reception
    failure

Regular communica-
tion failure

Flashes 3 times
(High speed)

H: ON

L: OFF

Regular communication that is performed at 1 second intervals in 
the normal operation is interrupted.
→ Main CPU operation failure or monitor microprocessor 
    reception failure

Other communica-
tion failure

Flashes 5 times
(High speed) 

H: ON

L: OFF

When a request (PM_REQ=H) is sent from the main microproces-
sor, the request command is not output from the main CPU, etc.
→ Main CPU operation failure or monitor microprocessor
    reception failure

Monitor temperature 
failure

Flashes once 
(High speed)

H: ON

L: OFF

If the panel temperature is 60

°C or more for 15s or more in a row, 

CAUTION appears on the OSD (flashes in red in the lower right 
screen).
If the panel temperature is 60

°C or more for 25s or more in a row, 

error standby is activated.
(MONITOR MAX TEMP on page 13/21 of the adjustment process: 
Change AD value for temperature failure): Thermistor

Main failure

Flashes 3 times 
(High speed)

H: ON

L: OFF

Main microprocessor detection error (CPU temperature error, etc.)
Details are displayed on page 1/21 of the adjustment process for 
the main microprocessor.