Sharp PN-S655 (serv.man3) Service Manual ▷ View online
PN-S655
TROUBLESHOOTING
5 – 1
CHAPTER 5. TROUBLESHOOTING
3. The display doesn't show/ Display abnormality
Check the adjustment and setting for any abnormality.
Readjust and reset with the menu.
Is input selection set to signal input?
Adjust the input source properly.
Digital connection only
Is the graphic board resolution proper?
Is the graphic board resolution proper?
Replace the graphic board.
Check the video input signal for any abnormality.
Check the video cable.
Check that the video signal is not a special one (out of support).
Check the video cable.
Check that the video signal is not a special one (out of support).
Replace the abnormal part.
Is the menu displayed under the signal input state?
Replace the abnormal part.
Replace the abnormal part.
2. The remote control does not work.
Is the battery power alive?
Consumption
Replace the battery.
Replace the abnormal part.
Replace the abnormal part.
1. The power is not supplied (The LED does not light up)
Is the AC cord properly inserted?
No
Insert the AC cord properly.
Is the power SW turned ON?
Is the power SW free from any abnormality?
Is the power SW free from any abnormality?
No
Replace the abnormal part.
Yes
No
Replace the abnormal part.
Replace the abnormal part.
No abnormality
No abnormality
Replace the abnormal part.
No abnormality
Abnormality
No abnormality
No abnormality
No abnormality
No abnormality
No abnormality
Yes
Yes
No abnormality
Abnormality
Abnormality
Abnormality
Abnormality
Abnormality
Abnormality
Abnormality
Abnormality
No
No
No
Does the main power PWB supply power voltages of STB5V/
19V/24V?
19V/24V?
Note: If the signal input is not supplied, the power save
function is operated to interrupt the output of 24V from
the sub power source.
the sub power source.
Check the power PWB and related sections for any
abnormality.
Check the fuse for breakage.
Check the main power PWB.
Check the switch cable.
Check the filter block.
Check the AC power cord.
abnormality.
Check the fuse for breakage.
Check the main power PWB.
Check the switch cable.
Check the filter block.
Check the AC power cord.
Check the I/F PWB 1 and the related parts for any abnormality.
Check the power cable.
Check the fuse for breakage.
Check the I/F PWB 1.
Check the power cable.
Check the fuse for breakage.
Check the I/F PWB 1.
Check the key PWB and the related parts for any abnormality.
Check the connection cable.
Check the key PWB.
Check the connection cable.
Check the key PWB.
Check the key PWB and the related parts for any abnormality.
Check the connection cable.
Check the key PWB .
Check the connection cable.
Check the key PWB .
Check the I/F PWB 1 and the related parts for any abnormality.
Check the connection cable.
Check the fuse for breakage.
Check the PWB.
Check the connection cable.
Check the fuse for breakage.
Check the PWB.
Check the I/F PWB 1 and the related parts.
Check the connection cable.
Check the fuse for breakage.
Check the PWB.
Check the connection cable.
Check the fuse for breakage.
Check the PWB.
Check the LCD module and the related parts for any abnormality.
Check the connection cable.
Check the LCD control PWB.
Check the connection cable.
Check the LCD control PWB.
Check the I/F PWB 1 and the related parts for any abnormality.
Check the connection cable.
Check the fuse for breakage.
Check the PWB.
Check the connection cable.
Check the fuse for breakage.
Check the PWB.
PN-S655
TROUBLESHOOTING
5 – 2
4. The backlight does not light up.
Yes
Refer to "3. The display doesn't show / Display abnormality".
Does the main power PWB supply STB5V/ 12V/ 19V/ 24V?
Refer to "1. The power is not supplied".
Replace the abnormal part.
Replace the abnormal part.
5. Sound is not reproduced/ Reproduced sound abnormality
Is the sound volume is set to the minimum or mute?
Readjust and reset.
Replace the abnormal part.
Replace the abnormal part.
Replace the abnormal part.
Repla ce the abnormal part.
Replace the abnormal part.
6. Daisy chain is not made / Display abnormality
Is input selection set to signal input?
Readjust and reset with the menu.
Replace the abnormal part.
Replace the abnormal part.
Yes
No
Yes
No abnormality
No abnormality
No abnormality
No abnormality
No abnormality
No abnormality
No abnormality
No
Abnormality
Abnormality
Abnormality
Is input selection set to audio signal input?
Adjust the input source properly.
When input HDMI, check the OSD setting.
When input HDMI, check the OSD setting.
Yes
No
Abnormality
Abnormality
Abnormality
Abnormality
Abnormality
Abnormality
Abnormality
Abnormality
Check the inverter and the related parts for any abnormality.
Check the LCD inverter PWB.
Check the connection cable.
Check the connection cable.
Check the CCFT lamp.
Check the I/F PWB 1 for any abnormality.
Check the connection cable.
Check the fuse for breakage.
Check the I/F PWB.
Check the fuse for breakage.
Check the I/F PWB.
Check the audio input signal for any abnormality.
Check the cable connection.
Check the audio cable.
Check the audio cable.
Check the audio output cable for any abnormality.
Check the cable connection.
Check the audio cable.
Check the audio cable.
Check the external speaker and the related parts for any abnormality.
Check the speaker cable.
Check the speaker.
Check the speaker impedance.
Check the speaker.
Check the speaker impedance.
Check the I/F PWB 2 and the related parts for any abnormality.
Check the connection cable.
Check the fuse for breakage.
Check the PWB.
Check the fuse for breakage.
Check the PWB.
Check the I/F PWB 1 and the related parts for any abnormality.
Check the connection cable.
Check the fuse for breakage.
Check the PWB.
Check the fuse for breakage.
Check the PWB.
Check the DVI cable for any abnormality.
Check the DVI cable connection.
Check the I/F PWB 1 and the related parts for any abnormality.
Check the connection cable.
Check the fuse for breakage.
Check the PWB.
Check the fuse for breakage.
Check the PWB.
When the power is turned on, the backlight lights up for several
seconds.
seconds.
PN-S655
TROUBLESHOOTING
5 – 3
7. The red LED blinks (When setting abnormal indication)
Abnormality
No abnormality
Replace the abnormal part.
Replace the abnormal part.
No NG
Abnormality
Abnormality
NG
Is there any abnormality in the NG position?
Check the power for abnormality
.
Check the fuse for breakage.
Check the cable connection.
Check the cable connection.
Check the key and the related parts for any abnormality.
Check the connection cable.
Check the key PWB.
Check the key PWB.
Check the I/F PWB 1 for any abnormality.
Check the connection cable.
Check the fuse for breakage.
Check the PWB.
Check the fuse for breakage.
Check the PWB.
To locate the abnormal position, perform a certain
operation or use a certain RS232C command and LAN
command to display the diagnosis result.
operation or use a certain RS232C command and LAN
command to display the diagnosis result.
8. The LED lights up in order of red
3 green 3 red 3 green. (When setting abnormal indication)
Abnormality
No abnormality
Replace the abnormal part.
Replace the abnormal part.
Replace the abnormal part.
No NG
Abnormality
Abnormality
NG
Is there any abnormality in the NG position?
Is the unit properly installed?
Is the unit properly installed?
Check the key and the related parts for any abnormality.
Check the connection cable.
Check the key PWB.
Check the key PWB.
Check the I/F PWB 1 for any abnormality.
Check the connection cable.
Check the fuse for breakage.
Check the PWB.
Check the fuse for breakage.
Check the PWB.
To locate the abnormal position, perform a certain
operation or use a certain RS232C command and LAN
command to display the diagnosis result.
operation or use a certain RS232C command and LAN
command to display the diagnosis result.
PN-S655
HARDWARE DESCRIPTIONS
6 – 1
CHAPTER 6. HARDWARE DESCRIPTIONS
1. CIRCUIT DESCRIPTIONS
1-1. POWER UNIT
The circuit is composed of the power unit
(RDENC1010MPPZ
(RDENC1010MPPZ
+RDENC1011MPPZ) and the filter block
(RUITK1010MPPZ).
■ General specifications
2. LCD UNIT
■ Color TFT LCD module LK645D3LZ65
This module is an active matrix, transmission-type, LCD display which
uses the amorphous silicon thin-film transistor (TFT: Thin-Film Transis-
tor) and enables color display.
tor) and enables color display.
The circuit is composed of the color TFT - LCD panel, the driver IC, the
control circuit, the power circuit, the inverter circuit, the backlight unit,
etc. As an interface, the LVDS (Low Voltage Differential Signaling) is
etc. As an interface, the LVDS (Low Voltage Differential Signaling) is
used to supply
+
12V DC power and
+
24V backlight power, allowing
image and text display in 16,777,216 colors on a panel of 1920
×
RGB
×
1080 dots. This module also includes the DC/AC inverter which is
used to drive the lamp.
The backlight is of direct under system and is composed of 36 CCFT’s
(Cold Cathode Fluorescent Tubes).
(Cold Cathode Fluorescent Tubes).
*1The product specification is 420cd/m2.
*2When the lamp is lighted continuously at Ta=25°C and the center
brightness reaches 50% of the initial value, it is judged as the life is
expired.
3. I/F1 PWB
Temperature sensor/Remote control/Switch/LED/
Inverter/LCD display is controlled.
3-1. INPUT AND OUTPUT SIGNAL
3-2. MAIN COMPLETE PARTS AND FUNCTION
Input rated
: AC120V
AC100V-240V
60Hz (USA)
50Hz/60Hz (EU)
50Hz/60Hz (EU)
Power
consumption
consumption
: 730W max. (at 100Vac, 60Hz, rated load)
Output STB 5V
: 5.1V 1.5A
Output 12V
: 12.2V 4.0A
Output 19V
: 19.2V 2.0A
Output 24V
: 24.3V 11.0A
• Screen size
: 163.9 cm (64.5”)
• Drive display area
: 1428.48 mm (H)
×
803.52 mm (V)
• Max. brightness
: 450 cd/m2 (Typ.)
*1
• Backlight life
: 60,000 hour
*2
(Life of the lamp itself)
50,000 hour
(Life of the lamp when assembled in the unit)
(Life of the lamp when assembled in the unit)
SPECIFICATIONS
USE CONNECTOR
PC signal
Analog input terminal
(VESA compliance)
(VESA compliance)
D-sub 15 pin
BNC
BNC
×
5
Digital input terminal
(HDMI compliance)
(HDMI compliance)
HDMI termial
Digital input terminal
(DVI compliance)
(DVI compliance)
DVI-D terminal
Digital output terminal
(Daisy chain type)
(Daisy chain type)
DVI-D terminal
RS-232C input terminal
D-sub 9 pin
AV signal
Digital input terminal
DVI-D terminal
Digital input terminal
(HDMI compliance)
(HDMI compliance)
HDMI termial
Composite video input
terminal
terminal
BNC
×
1
Component video input
terminal
terminal
BNC
×
3
“S-video” video input
terminal
terminal
mini DIn pin
Monitor
control
control
RS-232C output terminal
D-sub 9 pin
LAN terminal
RJ-45
REFERENCE
PARTS NAME
PARTS FUNCTION
IC106
BR24L02F
Analog PC type DDC
·
EEPROM
IC113
LT6554 3ch
video
buffer
IC202
SiI9135
DVI-D/HDMI type TMDS receiver
IC203
BR24L02F
Digital PC type DDC
·
ROM1
IC301
SiI9134
DVI-D type TMDS transceiver
IC401
SM5309BV
Video buffer with the built-in LPF
supporting the video signal band
supporting the video signal band
IC504
BR24L02F
DDC
·
EEPROM for HDMI
machinary
IC701
FLI30336
Scaler IC with built-in micropro-
cessor
cessor
IC801, 802
MT46V16M16P-5B
128Mbit DDR SDRAM
IC803
S29AL016D70
16Mbit flash memory
(program are saved.)
(program are saved.)
IC902
SH7619
LAN built-in micro processor
IC904
MAX3243
RS232C type transceiver/
receiver
receiver
IC1001
S29AL016D70
16Mbit flash memory
(program are saved.)
(program are saved.)
IC1002
K4S641632
64Mbit SDRAM
IC1101
DS1374U-33
+
RTC with the watchdog function
supporting I2C
supporting I2C
IC1103, 1106
BR24L32FV
32kbit EEPROM
(The set data are saved.)
(The set data are saved.)
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