Sharp LC-80LE646E (serv.man7) Service Manual ▷ View online
LC-60/70LE740E/RU,741E/S,743E,60LE840E/RU,841E/S,843E,80LE645E/RU,646E/S,648E
6 – 41
LED flashing timing chart at the time of the error
1) Low-speed blinking
2) Lamp failure details (Low-speed blinking: Flashes once + High-speed blinking)
3) Power failure details (Low-speed blinking: Flashes twice + High-speed blinking)
Error type
Expression of Central Icon LED
Lamp failure
low-speed blinking
Flashes once
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.
LOW/High blinking by pressing the [MENU] key on the remote
control.
Power failure
low-speed blinking
Flashes twice
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.
LOW/High blinking by pressing the [MENU] key on the remote
control.
Communication
failure with main CPU
low-speed blinking
Flashes 3 times
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.
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
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.
LOW/High blinking by pressing the [MENU] key on the remote
control.
Error type
Expression of Central Icon LED
Note: Pins are monitor microprocessor pins unless otherwise
specified (IC2001).
specified (IC2001).
Lamp failure
Flashes once
(High speed)
(High speed)
H: ON
L: OFF
LAMP_ERR (19pin): Abnormal H.
Confirmed after 8 consecutive detections at 64ms intervals
(detected only when the backlight is on).
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 [7. Lamp Error detection (ADJUSTMENT
PROCEDURE)]
To confirm the problem, “Lamp Error detection off-mode”
is prepared.
This mode compulsorily starts the set disregarding the
count.
Please refer to [7. Lamp Error detection (ADJUSTMENT
PROCEDURE)]
Error type
Expression of Central Icon LED
Note: Pins are monitor microprocessor pins unless otherwise
specified (IC2001).
specified (IC2001).
PS_ON
AC_DET failure
Flashes once
(High speed)
AC_DET failure
Flashes once
(High speed)
H: ON
L: OFF
AC_DET (28pin): Abnormal (L).
If error is detected during start-up or operation, the power is turned
on again by interrupt handling (instantaneous blackout process-
ing).
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)
Main 13V failure
Flashes twice
(High speed)
H: ON
L: OFF
DET_13V (32pin): Abnormal (L). Main 13V is not applied.
If error is detected during start-up or operation, the power is turned
on again by polling.
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)
Digital 3.3V failure
Flashes 3 times
(High speed)
H: ON
L: OFF
DET_D3V3 (33pin): 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.
on again by polling.
PANEL_POW
Panel 12V failure
Flashes 5 times
(High speed)
Panel 12V failure
Flashes 5 times
(High speed)
H: ON
L: OFF
DET_PNL12V (34pin): abnormal (L). DET_PNL12V is not applied.
Detection starts after receiving command from Panel Power ON.
The power is turned off by polling.
The power is turned off by polling.
100ms
400ms
1.6sec
LC-60/70LE740E/RU,741E/S,743E,60LE840E/RU,841E/S,843E,80LE645E/RU,646E/S,648E
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4) Communication failure details (Low-speed blinking: Flashes 3 times + High-speed blinking)
5) Other failure details (Low-speed blinking: Flashes 4 times + High-speed blinking)
Error type
Expression of Central Icon LED
Note: Basically, debug print logs are analyzed or
communication logs are analyzed by a bus monitor.
communication logs are analyzed by a bus monitor.
Initial communication
reception failure
Flashes once
(High speed)
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.
(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)
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.
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
tion failure
Flashes 3 times
(High speed)
(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.
the normal operation is interrupted.
→ Main CPU operation failure or monitor microprocessor
reception failure.
Other communica-
tion failure
tion failure
Flashes 5 times
(High speed)
(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.
sor, the request command is not output from the main CPU, etc.
→ Main CPU operation failure or monitor microprocessor
reception failure.
Error type
Expression of Central Icon LED
Note: Pins are monitor microprocessor pins unless otherwise
specified (IC2001).
specified (IC2001).
Monitor temperature
failure
failure
Flashes once
(High speed)
(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
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 (12/21) of the adjustment pro-
cess: Change AD value for temperature failure): Thermistor
(MONITOR MAX TEMP on page (12/21) of the adjustment pro-
cess: Change AD value for temperature failure): Thermistor
Main failure
Flashes 3 times
(High speed)
(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.
Details are displayed on page (1/21) of the adjustment process for
the main microprocessor.
LC-60/70LE740E/RU,741E/S,743E,60LE840E/RU,841E/S,843E,80LE645E/RU,646E/S,648E
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[5] TROUBLESHOOTING TABLE (LC-80LE645E/RU,646E/S,648E)
No power (Central Icon LED failure to light up) or No startup (Central Icon LED is flashing)
Is the AC cord connector tightly connected to the set?
NO
Reconnect the AC cord tightly and turn on the power again.
YES
Are the wire harnesses and other cables properly connected to
the set?
the set?
NO
Reconnect the wire harnesses and other cables properly to the
set.
set.
YES
Is power supplied from pins [9/BU+5V] of [PD] P9602?
NO
Replace the power unit.
YES
Is there the pins [12/PS_ON] of [PD] P9602 at “H”?
NO
Check the signal line between PS_ON and IC2001 (UCOM)/
IC3303 (Digital AV decode & Main CPU).
IC3303 (Digital AV decode & Main CPU).
YES
Is there the pins [11/AC_DET] of [PD] P9602 at “H”?
NO
Check the power unit, and the signal line between AC_DET and
IC2001/IC3303.
IC2001/IC3303.
YES
Is power supplied from pins [17~20/UR+13V] of [PD] P9602 as
specified?
specified?
NO
Check the line between PS_ON and IC2001/IC3303.
YES
Are the DC/DC converter outputs and the output voltages along
the control lines as specified?
the control lines as specified?
NO
Check the DC/DC converters and the control lines.
Replace defective parts as required.
Replace defective parts as required.
1) BU3.3V (IC9609 etc.)
2) D5.6V (IC9608 etc.)
3) D5V (IC9603 etc.)
4) U5V (IC9602 etc.)
5) D3.3V (IC9605 etc.)
6) M1.8V (IC9607 etc.)
7) D1.5V (IC9604 etc.)
8) D1.2V (IC1509 etc.)
9) D1.1V (IC9606 etc.)
10)AT5V (IC1104 etc.)
11)IF1.8V (IC1109 etc.)
12)SAT+1.2V (IC1102 etc.)
13)STB+3.3V (Q9607 etc.)
14)SD3.3V (IC8456 etc.)
15)CPU_A+1.2V (IC3301 etc.)
16)CIIN+5V (IC4403 etc.)
17)MT5135+1.1V (IC4401 etc.)
2) D5.6V (IC9608 etc.)
3) D5V (IC9603 etc.)
4) U5V (IC9602 etc.)
5) D3.3V (IC9605 etc.)
6) M1.8V (IC9607 etc.)
7) D1.5V (IC9604 etc.)
8) D1.2V (IC1509 etc.)
9) D1.1V (IC9606 etc.)
10)AT5V (IC1104 etc.)
11)IF1.8V (IC1109 etc.)
12)SAT+1.2V (IC1102 etc.)
13)STB+3.3V (Q9607 etc.)
14)SD3.3V (IC8456 etc.)
15)CPU_A+1.2V (IC3301 etc.)
16)CIIN+5V (IC4403 etc.)
17)MT5135+1.1V (IC4401 etc.)
LC-60/70LE740E/RU,741E/S,743E,60LE840E/RU,841E/S,843E,80LE645E/RU,646E/S,648E
6 – 44
The sound is not emitted from the Speaker.
No sound output in all modes?
YES
Do audio signals output from pins [Y30/CPU_AOLRCK, Y31/
CPU_AOBCK, Y32/CPU_AOMCLK, V27/CPU_AOSDATA0] of
IC3303 (Digital AV decode & Main CPU) ?
CPU_AOBCK, Y32/CPU_AOMCLK, V27/CPU_AOSDATA0] of
IC3303 (Digital AV decode & Main CPU) ?
NO
Check IC3303 and its peripheral circuits.
YES
Do audio signals input to pins[5/AMP_MCLK ,6/AMP_DATA_LR,,
7/AMP_BCLK, 8/AMP_LRCLK] of IC2703 (SP_AMP) ?
7/AMP_BCLK, 8/AMP_LRCLK] of IC2703 (SP_AMP) ?
NO
Check the line between IC3303 and IC2703.
YES
Do audio signals output from pins
[28/OUTML, 30/OUTPL, 12/OUTPR, 14/OUTMR] of IC2703 ?
[28/OUTML, 30/OUTPL, 12/OUTPR, 14/OUTMR] of IC2703 ?
NO
Check IC2703 and its peripheral circuits.
YES
DIs AMP_MUTE [pin(21)] of IC2703 at "H" ?
NO
Check the line between IC2703 and IC3303 & IC2001(UCOM).
(Q2701,D2701 etc...)
(Q2701,D2701 etc...)
YES
Do audio signals input to pins[1&2/L-ch, 3&4/R-ch] of P2701 ?
NO
P2701 terminal and the peripheral circuit (L/C filter) are checked.
YES
Check Speaker (right and left) and wire harness.
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