Sharp LC-32GD7E (serv.man2) Service Manual ▷ View online
25
Technical specifi cations
LC-32GD7E
General
Art. No.
65481
Dimensions with tablestand (mm)
795x638x307
(WxHxD)
Dimensions without tablestand (mm)
795x576x108
(WxHxD)
Picture format
16:9
Screen diagonal in cm
80
Picture resolution
1366x768
Contrast ratio
800:1
Viewing angle horizontal and vertical
170
o
Weight with tablestand (kg)
approx. 20.5
Rated power IEC 62087 (watts)
85
Power consumption on standbý (watts)
< 3
Ambient temperature (
o
C) 5-35
Relative humidity
20 ... 80% (no condensation)
Air pressure (HPa)
800 ... 1114
(0 ... 2000m above sea level))
Chassis L
2650
Power supply
220 V - 240 V / 50-60 Hz
Tuner VHF/UHF/cable
Hyperband 8 MHz
Hyperband 8 MHz
41 MHz to 860 MHz
Station memory
1680
TV standards
B/G, I, L, D/K, M, N
Colour standards
PAL SECAM, NTSC-V, PAL 60 Hz
Audio standards
mono/stereo/2-sound
Nicam B/G, I, L, Virtual Dolby
Audio rated output (watts)
2 x 20 / 6 Ohm
Analogue teletext
TOP/FLOF Level 2.5
Teletext page memory
3500
Digital teletext (UK only)
MHEG-5
Connections
Jack 3.5 mm
Headphone 32-2000 Ohm
EXT 4 Mini-DIN
Video IN
Y/C (S-VHS/Hi 8)
EXT 4 (yellow)
Video IN
CVBS (VHS/8 mm)
Cinch (white/red)
Audio IN
L/R
IEC socket 75 ohms (*5V/80mA) Antenna/cable/DVB-T
*F socket 75 ohms 13/18V/350 mA
*F socket 75 ohms 13/18V/350 mA
ANT-SAT
EXT 1
Video IN
Y/C (S-VHS/Hi 8)
CVBS (VHS/8 mm)
RGB,
YUV
Video
OUT
CVBS
Y/C (with SVHS AV link only)
Audio
IN
L/R
Audio
OUT
L/R
EXT 2
Video IN
Y/C (S-VHS/Hi 8)
CVBS (VHS/8 mm)
Video OUT
CVBS (VHS/8 mm)
Y/C (S-VHS/Hi 8)
Audio
IN
L/R
Audio
OUT
L/R
Cinch
Audio IN max. 2Vrms
Center
2 x Cinch
Audio IN
L/R
2 x Cinch
Audio OUT
L/R
EXT 3 (Cinch)
COMPONENT IN
Cb/Pb signal
COMPONENT IN
Cr/Pr signal
COMPONENT IN
Y signal
Cinch
Digital Audio IN (SPDIF)
digital
sound
Cinch
Digital Audio OUT (SPDIF)
digital
sound
EXT 5
Digital video/audio IN
type
A
19-pole
digital picture and sound
PC IN
VGA/XGA IN PC/STB picture signal
Mini DIN
Service/S-Link
* Devices with digital satellite tuner
26
H
YES
L
H and L
L and H only
NO
NO
YES
YES
NO
YES
YES
NO
YES
No picture comes out.
n
i
p
8
#
)
M
R
(
4
0
3
2
P
k
c
e
h
C
n
i
p
4
#
)
M
R
(
304
2
P
k
c
e
h
C
Check the power unit.
Blinking once? (At regular intervals)
Blinking once?
Blinking twice?
Blinking five times?
Is the Backlight off?
To "The backlight does not go on."
Is there the clock output at pin (26) of IC4601?
Check IC4502 and their peripheral circuits.
Check the FFC (LV, SC4601) connections.
To "The backlight does not go on."
Check the panel power supply circuit.
Check the temperature of the set.
Check the power unit.
Troubleshooting for LCD-Controller and MICOM-Board
27
TROUBLE SHOOTING TABLE
(Continued)
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
YES
NO
YES
YES
NO
YES
NO
YES
NO
YES
NO
Data dropout (relating to gray scale)
Noise is caused to the moving picture with the QS drive on.
The backlight does not go on.
The whole screen is whitish (LCD power supply).
Set PATTERN1
→ PATTERN1 on the adjustment process menu
to "2". Is the gray scale pattern displayed correctly?
Set PATTERN1
→ PATTERN3 on the adjustment process menu
to "1". Is the gray scale pattern displayed correctly?
Is OSTEMP.AD on Page 1 of the process adjustment mode set at
255?
255?
Is the harness connected correctly between the inverter GND
PWB and LCD control PWB?
PWB and LCD control PWB?
Is any of the fuses in the power supply unit blown?
Is power supplied to the inverter PWB?
Connect the harness correctly or replace it.
Set PATTERN1
→ PATTERN3 on the adjustment process menu
to "1". Is the gray scale pattern displayed correctly?
Disconnect the FPC from SC4651 and SC4652. (To protect the
panel against damage)
panel against damage)
Check the power supply voltage supplied to the panel (check at
SC4651 and SC4652).
SC4651 and SC4652).
Is the harness connected correctly between the PWBs (power
unit, inverter PWB, inverter GND PWB and LCD control PWB)?
unit, inverter PWB, inverter GND PWB and LCD control PWB)?
Check the connector and inverter circuit of each fluorescent lamp.
Check the peripheral circuits of IC4501.
Check the video signal circuit.
Is the input voltage at pin (75) of IC2301 (microprocessor) 5V?
The thermistor on the inverter GND PWB is faulty.
Check the connection between SC4651 and SC4652 and check
the peripheral circuits of IC4502.
the peripheral circuits of IC4502.
Check IC4502 and IC4501 and their peripheral circuits.
Connect the harness correctly or replace it.
Pin (75) of IC2301 (microprocessor) is faulty.
Check the inverter circuit located downstream from the blown
Is the control signal applied to P2302 #3Pin of LCD Control PWB?
Check IC4503 and their peripheral circuits.
Check the peripheral circuits of IC4601.
Troubleshooting for LCD-Controller and MICOM-Board
28
2) Power error details (power LED with 2 flashes + notice LED flashing)
Type of error
Notice LED behavior (one cycle)
Remarks
Monitor microprocessor pin unless otherwise specified
15V error
One flash
One flash
Two flashes
9V(A) error
Three flashes
Three flashes
H: ON
L: OFF
H: ON
H: ON
L: OFF
H: ON
L: OFF
H: ON
L: OFF
H: ON
L: OFF
15V_CHK (pin 31): Error at L.
15V voltage not applied.
Detected at startup only. Restarted by interrupt if detected
during operation (momentary stop).
15V voltage not applied.
Detected at startup only. Restarted by interrupt if detected
during operation (momentary stop).
CSEN1 (pin 34): Error at L.
Detected at startup and during operation (interrupt).
Detected at startup and during operation (interrupt).
VSH_IN (pin 36): Error at H.
VSH3.3V voltage not applied.
Detected at startup and during operation (interrupt).
VSH3.3V voltage not applied.
Detected at startup and during operation (interrupt).
FREERUN (pin 59): Error at L or STB (pin 32): Error at L.
LCD controller 3.3V voltage not applied.
Detected at startup and during operation (interrupt).
Check pin 59 (FREERUN) at startup and pin 32 (STB) at lamp
light-up.
LCD controller 3.3V voltage not applied.
Detected at startup and during operation (interrupt).
Check pin 59 (FREERUN) at startup and pin 32 (STB) at lamp
light-up.
Not used.
Not used.
VSH3.3V error
Four flashes
Four flashes
LCD controller
PWB 3.3V error
Five flashes
PWB 3.3V error
Five flashes
Six flashes
H: ON
L: OFF
3) Communication error details (power LED with 3 flashes + notice LED flashing)
Type of error
Notice LED behavior (one cycle)
Remarks
Basically, debug print log analysis and bus monitor communication log analysis
H: ON
L: OFF
H: ON
L: OFF
H: ON
L: OFF
No reception of initial communication signal from main CPU.
(Monitor ID request signal not received)
Communication line or main CPU startup in trouble.
(Monitor ID request signal not received)
Communication line or main CPU startup in trouble.
Periodic every-second communication interrupted while in usual operation.
Main CPU operation or monitor microprocessor signal reception in trouble.
Main CPU operation or monitor microprocessor signal reception in trouble.
No reception of software-based restart complete notice signal (from
standby on/off, for example).
Main CPU restart or monitor microprocessor signal reception in trouble.
standby on/off, for example).
Main CPU restart or monitor microprocessor signal reception in trouble.
No reception of startup confirm signal from main CPU. (Startup signal up
to notice 22h not received)
Main CPU startup or monitor microprocessor signal reception in trouble.
to notice 22h not received)
Main CPU startup or monitor microprocessor signal reception in trouble.
Initial communication
signal reception error
One flash
Startup confirm
signal reception error
Two flashes
signal reception error
One flash
Startup confirm
signal reception error
Two flashes
Periodic
communication error
Three flashes
communication error
Three flashes
Restart error
Four flashes
Four flashes
H: ON
L: OFF
Power LED: P2304(RM) #8Pin
Notice LED: TP2301 (IC2301 #22Pin)
Notice LED: TP2301 (IC2301 #22Pin)
1) Red power LED
Type of error
Red power LED behavior (one cycle)
Remarks
Monitor microprocessor pin
Lamp error
One flash: Quick
One flash: Quick
Power error
Two flashes
Two flashes
Communication error
with main CPU
Three flashes
with main CPU
Three flashes
H: ON
L: OFF
H: ON
L: OFF
H: ON
L: OFF
H: ON
L: OFF
L_FL_ERR (pin 73): Error at L.
Established when repeated continuously 5 times at 1-second
intervals (detected only while the backlight is on).
Note that no startup is made after a total of 5 times in any
process than monitor.
The total will be cleared with the setting in the monitor process
or in 30 minutes of continuous light-up.
Established when repeated continuously 5 times at 1-second
intervals (detected only while the backlight is on).
Note that no startup is made after a total of 5 times in any
process than monitor.
The total will be cleared with the setting in the monitor process
or in 30 minutes of continuous light-up.
3) Refer to "Communication error details".
Communication line or main CPU communication in trouble.
Check the main CPU debug print.
CAUTION characters flashing in red at bottom right (AVC OSD)
if the panel temperature is over 60oC longer than 15 seconds.
Error standby mode if the panel temperature is over 60oC
longer than 25 seconds.
(OSTEMP in monitor process OTHER2: Thermistor AD value
displayed, TEMP ERR on FAN page: Temperature error AD
value modified): Thermistor
Communication line or main CPU communication in trouble.
Check the main CPU debug print.
CAUTION characters flashing in red at bottom right (AVC OSD)
if the panel temperature is over 60oC longer than 15 seconds.
Error standby mode if the panel temperature is over 60oC
longer than 25 seconds.
(OSTEMP in monitor process OTHER2: Thermistor AD value
displayed, TEMP ERR on FAN page: Temperature error AD
value modified): Thermistor
2) Refer to "Power error details".
Monitor
temperature error
Five flashes
temperature error
Five flashes
LED Flash Timing Chart in Case of Errors
250ms
1sec
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