PDP-4271HD
101
5
6
7
8
5
6
7
8
C
D
F
A
B
E
5.3.2 SD (SHUTDOWN) DIAGNOSIS
Frequency of
LED Flashing
Major Type
Detailed Type
Log Indication in Factory Mode
Checkpoint
Possible Defective
Part
Remarks
MAIN
SUB
Blue 1
Abnormality in the
Sequence Processor
Communication error
SQ-IC
RTRY
CLK_SQ/TXD_SQ, etc.
IC3151, IC3401
SQ_IC communication not established
Drive stop
SQNO
Check if the video sync signal is input to IC3401.
CN3001, IC3401
If the signal detection by the module microcomputer is properly performed, the unit operates on an external sync.
Busy
BUSY
BUSY_SQ
IC3401
If BUSY_SQ remains high, a shutdown is generated.
Incoherent version (hardware, software)
VER-HS
Check the model number of the DIGITAL Assy and the destination of the sequence processor.
IC3301, IC3401
The written SQ_PROG is incoherent with data on the DIGITAL Assy.
Blue 2
Failure in IIC
communication with the
module microcomputer
DIGITAL Assy EEPROM
MD-IIC
EEPROM
IIC communication line of IC3156
IC3151, IC3156
Check the pull-up resistor of the IIC control line and the power to the corresponding IC.
SENSOR Assy EEPROM
BACKUP
IIC communication line of IC3652
IC3151, IC3652
Check the pull-up resistor of the IIC control line and the power to the corresponding IC.
DAC
DAC
IIC communication line of IC3157
IC3151, IC3157
Check the pull-up resistor of the IIC control line and the power to the corresponding IC.
Blue 3
Abnormality in RST2
power decrease
–
RST2
–
Is the output voltage of the DC-DC converter low?
AXY1135
If RST2 does not become high after the unit is turned on, a shutdown will be generated in several seconds.
The 12 V power is not output.
POWER SUPPLY Unit
Check if V + 12 V is started.
Blue 4
High temperature of the
panel
–T
MP_NG
TEMP1
Ambient temperature
–
If TEMP1 that is read by the module microcomputer is 75
°
C or higher, a shutdown will be generated.
Abnormality in the panel temperature sensor
IC3651
Check the connection with the SENSOR Assy.
Blue 5
Short-circuiting of the
speakers
–
AUDIO
–
Speaker terminals
CN3753, CN3901, JA3901
Check if any speaker cable is in contact with the chassis.
AUDIO_AMP
IC3751
Check if the AMP output is short-circuited.
Periphery of the cable between A2 and M8
CN3752, CN4007
Check if cables are firmly connected.
Blue 6
Failure in communication with
the module microcomputer
–
MODULE
–
Communication line between MAIN and MOD
IC3151, IC8401
Check the communication lines (RXD_MOD/RXD_MOD/REQ_MOD).
Periphery of the cable between D11 and M2
CN3001, CN4001
Check if cables are firmly connected.
Blue 7
Failure in main
microcomputer 3-wire
serial communication
IF microcomputer
MA-SRL
IF
Communication line between IF and MAIN
IC8301, IC8401
Check the communication lines (TXD_IF/RXD_IF/CLK_IF/BUSY_IF/CE_IF/REQ_IF).
MULTI
MULTI
Communication line between MULTI_M and MAIN
IC8201, IC8401
Check the communication lines (TXD_IC3/RXD_IC3/CLK_IC3/CE_IC3/IC3_BUSY).
I/P
Bus communication line between IP and MULTI_M
IC8101, IC8201
Check the communication lines (EXA/EXDIO).
D_SEL
Communication line between D_SEL and MULTI_M
IC8001, IC8201
Check the communication lines (TXD_IC6/RXD_IC6/CLK_IC6/CE_IC6).
Blue 8
Failure in IIC
communication with the
main microcomputer
AV Switch
MA-IIC
AV-SW
IIC communication line between AV_SW and MAIN
IC4701, IC8401
Check the communication lines (SCL_AV3/SDA_AV3 or SCL_AV/SDA_AV
).
RGB Switch
RGB-SW
IIC communication line between RGB_SW and MAIN
IC4901, IC8401
Check the communication lines (SCL_AV3/SDA_AV3 or S
CL_AV/SDA_AV).
Analog Tuner
FE1
IIC communication line between A_Tuner and MAIN
U4401, IC8401
Check the communication lines (SCL_AV3/SDA_AV3 or SC
L_AV/SDA_AV).
Analog Tuner
FE2
IIC communication line between A_Tuner and MAIN
U4402, IC8401
Check the communication lines (SCL_AV3/SDA_AV3 or SC
L_AV/SDA_AV).
MPX
MPX
IIC communication line between MPX and MAIN
IC4402, IC8401
Check the communication lines (SCL_AV3/SDA_AV3 or SCL_AV/SDA_AV)
.
Main VDEC
M-VDEC
IIC communication line between M_VDEC and MAIN
IC5101, IC8401
Check the communication lines (SCL_MA/SDA_MA).
AD/PLL
ADC
IIC communication line between ADC and MAIN
IC5301, IC8401
Check the communication lines (SCL_MA/SDA_MA).
HDMI
HDMI
IIC communication line between HDMI_RX and MAIN
IC5401, IC8401
Check the communication lines (SCL_MA/SDA_MA).
CCD
CCD
IIC communication line between CCD and MAIN
IC4601, IC8401
Check the communication lines (SCL_TXT/SDA_TXT).
64K EEPROM
MA-EEP
IIC communication line between EEPROM and MAIN
IC8409, IC8401
Check the communication lines (SCL_EP/SDA_EP).
VOLUME IC
AUDIO
IIC communication line between VOL_IC and MAIN
IC3753, IC8401
Check the communication lines (SCL_AUDIO/SDA_AUDIO).
VOLUME IC
AUDIO
Periphery of the cable between A2 and M9
CN3752, CN4007
Check if cables are firmly connected.
Blue 9
Failure in communication with the main microcomputer and unknown
MAIN
–
–
Communication line between IF and MAIN
IC8301, IC8303, IC8304, IC8401
Check the communication lines (TXD_IF/RXD_IF/CLK_IF/BUSY_IF/CE_IF/REQ_IF).
Blue 10
Failure in the fan
–
FAN
–
Dirt attached to the fan motor
–
Check the fan.
Periphery of the cable between fan and M4
CN4009
Check if cables are firmly connected.
Periphery of the fan control regulator
IC8407
–
Blue 11
High temperature of the
unit
–
TEMP2
–
Temperature sensor or its periphery
–
A
shutdown is generated if TEMP2 becomes higher than 53
°
C
Periphery of the temperature sensor
TH8901, Q8901
TEMP2
Periphery of the cable between T2 and M7
CN8802, CN4004
Check if cables are firmly connected.
Blue 12
Digital Tuner
–
DTUNER
PS/RST
Startup of IC6301
IC6301
Check startup of BCM7038 and the communication line between IC6301 and MAIN.
DEVICE
Communication line between MAIN and IC6301
IC6301
Check startup of BCM7038 and the communication line between IC6301 and MAIN.
TV-G
Startup of the TV-GUIDE application
IC6301
Check startup of the TV-GUIDE application. (
∗
)
HOME-G
Startup of the HOME-G application
IC6301
Check BCM7038 and its peripheral devices.
Blue 13
Failure in the POWER
SUPPLY Unit
DC-DC converter power decrease
MA-PWR
M-DCDC
DC-DC converter or its periphery, RST2
IC4102, Q4106
Check if V + 3.3 V is started.
POWER SUPPLY
RELAY
The 12 V power is not output, RST4
–
Check if V + 12 V is started.
Periphery of the cable between P8 and M2
CN4002
Check if cables are firmly connected.
(
∗
) : Check if it becomes banner display when switching channel.
Содержание PDP-4270HD
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Страница 189: ...PDP 4271HD 189 5 6 7 8 5 6 7 8 C D F A B E Block Diagram R2S11002AFT MAIN ASSY IC4701 AV SW ...
Страница 190: ...PDP 4271HD 190 1 2 3 4 1 2 3 4 C D F A B E Block Diagram R2S11001FT MAIN ASSY IC4901 Component SW IC ...