Sony MZ-E800 service manual Section Servicing Notes

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SECTION 1

SERVICING NOTES

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-2E)

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.

•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 (S809 on MAIN board) with a tape in advance.

mechanism deck section

MAIN board

open/close detect switch

tape

(S809)

 

•Replacement of CXD2661GA-2 (IC601) and CXR701080- 016GA (IC801) used in this set requires a special tool. There- fore, they cannot be replaced.

•On the set having the microcomputer version 1.000, the NV reset failure will occur.

Therefore, in executing the NV reset during electrical adjustment, follow the troubleshooting method of NV reset to perform the NV reset (see page 17).

laser-tap

OPTICAL PICK-UP FLEXIBLE BOARD

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Contents 927-939-12 SpecificationsFlexible Circuit Board Repairing Table of ContentsDiagrams Exploded Views Electrical Parts ListSection Servicing Notes Operation of Mechanism When a disc is loadedWhen a disc is unloaded Section General Parts and controlsPanel ASSY, Rear Section DisassemblyShutter Section Front Panel SectionMD Mechanism Deck MT-MZE800-170 Display PANEL, Liquid Crystal LCD901Main Board OP Service Assy LCX-2EHolder Assy MOTOR, DC SSM17A/C-NP Spindle M901, MOTOR, DC Sled M902Releasing the Test Mode Test ModeSetting Method of Test Mode Operation in Setting the Test ModeConfiguration of Test Mode Manual ModeA n u a l 000 1 s t 011 C 6 8 S 0F F J 0 011 0 6 3 B 0Reset the error display code Description of Error Indication CodesDescription of Indication History SET OK 000000 FF RPLAY021 Res ResetPower CC Section Electrical AdjustmentsVrhVch 762 Vc1PWM764 Vr1Vc1 VchPWM000 *** NG ChgPW1ChgPW2 Assy11Block Diagram Main /2 Section DiagramsSlcv Block Diagram DISPLAY/KEY CONTROL/POWER Supply Section Semiconductor Location Printed Wiring BoardPlayback + Line Schematic Diagram Main Board 3/4 See page 37 for Waveforms Charge IC Block Diagrams IC301 TA2131FL EL WaveformsIC501 SN761056CDBT IC903 XC6383C601MR IC904 XC6368B101MR IC551IC PIN Function Description IC601 CXD2661GA-2 Ixoe VDIO1VSIO1 XrasVDC4 XlrfApcref LddrSCK0 VlcdSI0 SO0Xchg PWR Xwake CloseXwake SET Xwake DCDBB0 SSB DataSSB CLK Flash WR ENPanel Section Section Exploded Views5666 Main Section102 117 101 103 106 107 109 108 116 115 110 114 113 112 111 MD Mechanism Deck Section MT-MZE800-170105 104 103Main Section Electrical Parts ListInductor Composition Circuit Block Accessories & Packing Materials Revision History
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