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5
Checkpoint
Power supply for MSP and MSP
Communication line between IF and MAIN
Communication line between MULTI and MAIN
IIC communication line between Tuner and MAIN
IIC communication line between MSP/MAP and MAIN IC5801, IC7003
IIC communication line between AV_SW and MAIN
IIC communication line between RGB_SW and MAIN
IIC communication line between M_VDEC and MAIN
Communication line between VDEC and SDRAM
IIC communication line between ADC and MAIN
IIC communication line between HDMI_RX and MAIN IC4901, IC7003
IIC communication line between DP_TX and MAIN
Communication line between IF and MAIN
Dirt attached to the fan motor
Periphery of the FAN
Periphery of the cable at M31
Periphery of the fan control regulator
Ambient temperature
Temperature sensor or its periphery
Periphery of the cable between M2 and K1
Startup of BCM7404
Communication line between BCM7404 and MAIN
Periphery of the BCM7404
Front-end block
Antenna supply voltage
DTV application
COFDM
Tuner S2
S2DEMOD
LNB
Antenna supply voltage
RST2 V+3_4V_ACT2, V+3_4V_D3
RST4 V+12V, V+6_5V, V+5_1V_D, V+3_4V_D
V+12V, V+6_5V, V+17V
Check the cable M1
IIC communication line between EEPROM and MAIN
5
6
Possible Defective
Part
IC5801, IC4604, Q4616 Check the MSP, its power and periphery parts (e.g. reset line).
IC7003, IC6811
Check the communication lines (TXD_IF/RXD_IF/CLK_IF/BUSY_IF/CE_IF/REQ_IF)
IC7003, IC6501
Check the communication lines (TXD_ARIA/RXD_ARIA)
U5301, IC7003
Check the communication lines (SCL_TU/SDA_TU or SCL_AV/SDA_AV)
Check the communication lines (SCL_AV/SDA_AV)
IC5101, IC7003
Check the communication lines (SCL_AV5/SDA_AV5)
IC5501, IC7003
Check the communication lines (SCL_AV5/SDA_AV5)
IC4702, IC7003
Check the communication lines (SCL_MB/SDA_MB)
IC4701, IC4702
Check the communication lines (SDRAM), Failure in SDRAM
IC4801, IC7003
Check the communication lines (SCL_AV/SDA_AV)
Check the communication lines (SCL_MB/SDA_MB)
IC7602, IC7003
Check the communication lines (SCL_EEP/SDA_EEP)
IC6811, IC7003
Check the communication lines (TXD_IF/RXD_IF/CLK_IF/BUSY_IF/CE_IF
/REQ_IF)
Check the fan. (SD10 does not detect it at the temperature that fans do not turn.)
FAN_NG
Check if cables are firmly connected.
IC4302
Check that the voltage outputs it.
TEMP2 A shutdown occurs because of high temperature.
TH9401
TEMP2
CN4204, CN9401
Check if cables are firmly connected.
IC6001
Check the startup of the BCM7404 and the communication line with MAIN
IC6001
Check the startup of the BCM7404 and the communication line with MAIN
IC6001
IC6001, U5301
Check the BCM7404, terrestrial tuner and periphery devices.
IC4304
Check the IC4304 (overcurrent detection IC), its periphery devices and antenna connection line.
IC6001
IC5401
Check the communication line between BCM7404 and COFDM
U5201
Check the communication line between S2DEMOD and F.E.
IC5201
Check the communication line between BCM7404 and S2DEMOD
IC4503
Check the communication line between BCM7404 and LNB IC, and check the periphery parts of LNB IC.
IC4503
Check the LNB IC and periphery parts, and antenna connection line.
IC7002
Check if each voltages are started.
IC7002
Check if each voltages are started.
POWER SUPPLY Unit
Check if each voltages are started.
CN4203
Check if cables are firmly connected.
IC7004, IC7003
Check the communication lines (SCL_EEP/SDA_EEP)
KRP-M01
6
7
Remarks
7
8
A
B
C
D
E
F
63
8

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