Pioneer f-502 Service Manual page 67

No. of times of
LED flashing
Category SD Circuit in operation
Category
IIC communication failure of the
main microcomputer (Confirm the
Green 8 SD8
SD subcategory in the factory
menu)
Communication failure in main
Green 9 SD9
microcomputer
Green 10 SD10 Fan failure
Unit having higher temperature
Green 11 SD11
(TEMP2)
Green 12 SD12 DIGITAL TUNER
Green 13 SD13 ASIC power supply (DC-DC)
Green 14 SD14 Communication failure
Defective Assy Reason for shutdown
Failure in MICHAEL (MAIN) or defective peripheral circuits
Failure in MICHAEL (SUB) or defective peripheral circuits
Failure in AD (MAIN) or defective peripheral circuits
Failure in AD (SUB) or defective peripheral circuits
MAIN BOARD Assy
Failure in ROZ or defective peripheral circuits
Failure in EEPROM or defective peripheral circuits
Failure in HDMI Rx or defective peripheral circuits
Failure in HDCP Tx or defective peripheral circuits
Failure in TUNER UNIT or defective peripheral circuits
AV BOARD Assy Failure in AV_SW or defective peripheral circuits
Failure in VIDEO_SW or defective peripheral circuits
TUNER BOARD Assy Defective DTV tuner
Failure in communication (SCL_AV, SDA_AV, SCL_MAIN,
MAIN BOARD Assy or
SDA_MAIN, SCL_HDMI, SDA_HDMI, SCL_HDCP,
AV BOARD Assy or
SDA_HDCP,SCL_EP, SDA_EP) between one of the above
TUNER BOARD Assy
devices and IC7207 (Main Ucom)
MAIN BOARD Assy Failure in writing in the Main Ucom
Disconnection of cable
MAIN BOARD Assy or
AV BOARD Assy
Failure in communication (TXD_IF,
RXD_IF,CLK_IF,BUSY_IF, CE_IF,REQ_IF) between the
IC8702(IF Ucom) and IC7207 (Main Ucom)
FAN Failure in the fan motor or fan stopped by attached dust
MAIN BOARD Assy or
AV BOARD Assy
MAIN BOARD Assy or SR Assy
Disconnection of cable
AV BOARD Assy
SR Assy
Unit having higher temperature
TUNER BOARD Assy Defective DTV tuner
Disconnection of cable
MAIN BOARD Assy or
TUNER BOARD Assy
Failure in communication (TXDC, RXDC) between the DTV
tuner and IC7207 (Main Ucom)
AV BOARD Assy Defective DC-DC converter
MAIN BOARD Assy Defective RST IC
MR POWER SUPPLY Assy No startup of 12 V
AV BOARD Assy Failure in EEPROM or defective peripheral circuits
Disconnection of cable
MAIN BOARD Assy or
AV BOARD Assy
Failure in communication (SCL_EP2/SDA_EP2) between the
IC8705(EEPROM) and IC7207 (Main Ucom)
PDP4350SX & PDP5050SX
Point to be Checked
MICHAEL BLOCK
MICHAEL BLOCK
AD BLOCK
AD BLOCK
ROZ BLOCK
MAIN UCOM BLOCK
HDMI RX BLOCK
IF BLOCK
TUNER BLOCK
AV SW BLOCK
AV SW BLOCK
MAIN UCOM BLOCK
CN7455(M2) - CN8652(AV2)
CN7454(M1) - CN8651(AV1)
CN7454(M7) - CN8651(SR2)
FAN-CN8505(AV6)
FAN-CN9505(SR4) or FAN-
CN9506(SR3)
Surrounding temperature
CN7455(M2) - CN8652(AV2)
AV REG BLOCK
MAIN UCOM BLOCK
UIF UCOM BLOCK
CN7454(M1) - CN8651(AV1)
67
Possible
Defective Remarks
Part
IC6107
IC6255
IC6402
IC6602
IC6951
IC7205
IC6881
IC7401
U7501,U7502
IC8002
IC8005
IC7207
Check if the cable is disconnected
or not securely connected.
Check if the cable is disconnected
or not securely connected.
Check if the cable is disconnected
or not securely connected.
U8502 Check if 3.3 V and 1.5 V are activated.
IC7206,
IC7210
IC8705
Check if the cable is disconnected
or not securely connected.