Pioneer 434CMX Service Manual - Page 101

• Diagnosis of shutdown 5 5 6 6 PDP-434CMX SD Circuit in Operation Defective Assy Reason for Shutdown Point to be Checked DIGITAL VIDEO 1 Communication failure of the panel-drive IC Communication failure of IC4 or defective peripheral IC4 Block, Panel Flash Block circuits Writing failure of IC4 Possible Defective Part IC5401, IC5305 Remarks After turning the unit on again, check if the data on the version can be read with the GS1 command. DIGITAL VIDEO Communication failure of the module IC (Check the shutdown subcategory on 2 the Factory menu.) RGB DIGITAL VIDEO 3 Power decrease of DIGITAL- DIGITAL VIDEO DC-DC POWER SUPPLY 4 Panel having higher temperature DIGITAL VIDEO 5 Audio failure AUDIO AMP AUDIO AMP DIGITAL VIDEO 6 Communication failure of the module microcomputer AV I/O Communication failure of the EEPROM (4k) or defective peripheral circuits Module Ucom Block Communication failure of the EEPROM (2k) or defective peripheral circuits IC3 Block Defective 114-pin FPC CN400(D15) - CN7101(R10) Defective DC-DC converter Digital DD Control Block Defective RST IC Panel Flash Block No startup of 12 V Disconnection of cable CN5202 - CN1071 Panel having higher temperature Surrounding temperature Speaker short-circuited Speaker terminals Defective AMP IC Audio Amp Disconnection of cable CN7601(AV1) - CN5001(AP2) Communication failure in the module microcomputer Module Ucom Block or defective peripheral circuits Failure in writing in the module microcomputer Module Ucom Block Defective 114-pin FPC CN4004(D15) - CN7101(R10) Communication failure in the IF microcomputer or defective peripheral circuits IF Ucom Block IC5206 IC7102 ADY1081 U5601 IC5301,IC5302,IC5303 IC5003 IC5201 IC5201 ADY1081 IC8702 Check if the cable is disconnected or not securely connected. Check if 3.3V, 2.5V, and 1.5V are activated (not short-circuited). Temperature detected by a sensor must not exceed 90°C (TEMP1). Check if the speaker cables are in contact with the chassis, etc. Check if the cable is disconnected or not securely connected. Check short/open of the communication line (TXDO/RXDO). Check if the cable is disconnected or not securely connected. Check short / open of the communication line (TXD_IF/RXD_IF/CLK_IF/BUSY_IF/CE_IF) RGB Serial communication failure 7 of the 3-wire of the main microcomputer RGB Communication failure in the CELIA or defective peripheral circuits Communication failure in the MIKE or defective peripheral circuits IC2 Block IC3 Block IC7004 IC7101 Check short / open of the communication line (TXD_IC2/RXD_IC2/CLK_IC2/CE_IC2) Check short / open of the communication line (TXD_IC3/RXD_IC3/CLK_IC3/BUSY_IC2/CE_IC3) RGB Failure in writing in the MIKE IC3 Block VIDEO SLOT1 or 2 Failure in MICHAEL Y/C or defective peripheral circuits IC1 (Y/C) Block VIDEO SLOT1 or 2 Failure in MICHAEL CVBS or defective peripheral circuits IC1 (CVBS) Block RGB Failure in AD MAIN or defective peripheral circuits Main AD Block RGB Failure in AD SUB or defective peripheral circuits Sub LPF & AD Block RGB 8 IIC communication failure of the main microcomputer RGB (Confirm the SD subcategory in the factory menu) AV I/O RGB Failure in ROZ or defective peripheral circuits Failure in ROZ or defective peripheral circuits Failure in VOL IC or defective peripheral circuits Failure in EEPROM or defective peripheral circuits Bus SW1 Block Bus SW2 Block AV I/O Assy Main Ucom Block VIDEO SLOT1 or 2 Failure in EEPROM or defective peripheral circuits IC1 (Y/C) Block Defective communication line between any of the above devices and the main microcomputer IC7101 IC6255 IC6107 IC6001 IC6602 IC5701 IC5801 IC7603 IC7205 IC6257 IC7207 Check short / open of SCL_AV/SDA_AV, SCL_MA/SDA_MA and SCL_EP/SDA_EP 7 7 8 8 101 A B C D E F