Sony R501PC service manual Section Servicing Note, Optical PICK-UP Flexible Board

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MZ-R501/R501PC

SECTION 1

SERVICING NOTE

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT

The laser diode in the optical pick-up block may suffer electro- static break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body.

During repair, pay attention to electrostatic break-down and also use the procedure in the printed matter which is included in the repair parts.

The flexible board is easily damaged and should be handled with care.

NOTES ON LASER DIODE EMISSION CHECK

Never look into the laser diode emission from right above when checking it for adjustment. It is feared that you will lose your sight.

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK (LCX-4R)

The laser diode in the optical pick-up block may suffer electro- static break-down easily. When handling it, perform soldering bridge to the laser-tap on the flexible board. Also perform mea- sures against electrostatic break-down sufficiently before the op- eration. The flexible board is easily damaged and should be handled with care.

laser-tap

OPTICAL PICK-UP FLEXIBLE BOARD

•In performing the repair with the power supplied to the set, removing the MAIN board causes the set to be disabled.

In such a case, fix a convex part of the open/close detect switch (S806 on MAIN board) with a tape in advance.

Handle the FLEXIBLE board (overwrite head) with care, as it has been soldered directly to the MAIN board.

In repairing the component side of MAIN board, connect the FLEXIBLE board (overwrite head) and the MAIN board with the lead wires in advance. (See page 7)

FLEXIBLE board (Over write head)

panel assy, upper

Tape

S806

MAIN board

•Replacement of CDX2671-204GA (IC801) used in this set requires a special tool.

•On the set having the microcomputer version 1.000, some adjusted values were set in the manual mode at the shipment, but these data will be cleared when the NV is reset. Therefore, on the set having the microcomputer version 1.000, change the adjusted values following the Change of Adjusted Values immediately after the NV was reset. (See page 17)

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Contents Specifications LCX-4RFlexible Circuit Board Repairing MZ-R501/R501PCTable of Contents Electrical AdjustmentsDisassembly DiagramsSection Servicing Note Optical PICK-UP Flexible BoardLooking at the controls GeneralCase Lower Assy Section DisassemblyCase Upper Assy LCD Module Main BoardMD Mechanism Deck Service ASSY, OP Holder Assy Motor Flexible BoardDC Motor M602 DC Motor M601, DC Motor M603Section Test Mode 00 6Configuration of Test Mode Manual ModeTransition method in Manual Mode 00Manual113A4S1D 11OFEJ1D11063B1D 11072A1DReset the error display code Description of Error Indication CodesSetting method of Reset the Error Display Code Description of Indication HistoryKey Check Mode Sound Skip Check Result Display Mode88RMC OK 88RMC OK 21Reset 21ResOK?21Res 32Pw-T W62 S01 71V5num71 S20 72V5dat64V1 PWM 14 S1410Laser 00ADJ OKConfiguration of overall adjustment 12HrefPw12###S 13WritPw00Assy 35Ofst00CD OK 00MO OKMode Settings 62***S2062***S30 0000TimeMK67***S67 68***S2068***S01 43ResumeSection Diagrams IC PIN Function DescriptionMIC Sense XtestMIFVSS3 SET KEYAPC DSPVDD0DSPVSS0 XtslSldw SlcuSlcv SlcwCLK SEL Open Close SWGND SW SET CODE0Xhold SW Sycn RECSync Level FlashvddBlock Diagram Servo Section Main BoardBlock Diagram Audio Section Main BoardMain Board 3/3 System CONTROL/POWER Section Block Diagram System Control / Power SectionCommon note on Printed Wiring Board WaveformsPrinted Wiring Board Main Section Refer to page 33 for Note Side aSemiconductor Location Side B IC B/D Except US, CND Model C323 R314 C308 AP310 C102 C312 C307 IC Block Diagrams IC501 SN761057DBTIC701 SC111257FCR2 IC601 IC901IC301 AK5354VT IC302 TA2131FLSection Exploded Views Panel SectionCase Upper Silver Case Upper Blue54 A-3323-653-A Main BOARD, Complete Except US,CND Chassis Section58 3-225-632-01 Spring LIMITER, Compression MD Mechanism Deck Section MT-MZR500-172 Section Main Electrical Parts List Ceramic Chip 9PF DiodeDiode UDZ-TE-17-2.4B Jumper ResistorJACK, DC Polarity Unified Type InductorCOIL, Choke Inductor ChipSwitch SWITCH, Slide HoldFILTER, Chip EMI Common Mode Network ResistorAccessories CONNECTOR, Optical Except R501US,EENGLISH,RUSSIAN,HUNGARIAN POLISH,CZECH,SLOVAKIAN Italian AEPMemo Revision History Date Description of Revision
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