Sony MZ-R91 service manual Section Disassembly, Panel ASSY, Bottom, Upper Panel Section

Page 5

SECTION 3

DISASSEMBLY

• This set can be disassembled in the order shown below.

Main Board, “Case Assy, Battery”

Set

Panel Assy, Bottom

Upper Panel Section

LCD Module, “Button, Control”, “Service Assy, Upper Panel” (R90/R91)

Belt Assy, Ornamental

Main Board, “Case Assy, Battery”

“Chassis Assy, Set”,

MD Mechanism Deck (MT-MZR90-165)

Service Assy, OP

Holder Assy

Motor Flexible Board

Motor, DC (Sled) (M602)

“Motor, DC SSM-01C14A (Spindle) (M601)”, “Motor, DC (Over Write Head Up/Down) (M603)”

Note: Follow the disassembly procedure in the numerical order given.

PANEL ASSY, BOTTOM

Note: On installation of bottom panel assy, adjust the posi- tion of both two switches (S804, S807) and two knobs (hold).

S807

5two screws

(1.4)

knob (hold)

3 battery case lid

S804	1 Open the	2 two claws

	battery case lid.

4Close the

battery terminal (plus).

5 two screws

(1.4)

A	6 Remove the bottom panel assy
	in the direction of arrow A.

5screw (1.4)

UPPER PANEL SECTION

5 upper panel section

4 two screws

1 flexible board

(1.4)

(CN801)

4 two screws

(1.4)

3

2 knob (open)

– 5 –

Image 5

Contents LCX-2R SpecificationsNEW Diagrams Table of ContentsExploded Views Electrical Parts List Flexible Circuit Board RepairingEeprom Section Servicing NotesSection Headphones with a remote control RM-MZ2SGeneral Location of ControlsUpper Panel Section Section DisassemblyPanel ASSY, Bottom MZ-R91 LCD MODULE, BUTTON, CONTROL, Service ASSY, Upper PanelMZ-R90 Belt ASSY, Ornamental Main BOARD, Case ASSY, BatteryChassis ASSY, SET, MD Mechanism Deck MT-MZR90-165 Service ASSY, OPMotor Flexible Board Holder AssyMOTOR, DC Sled M602 Setting Method of Test Mode Test ModeOperation in Setting the Test Mode Releasing the Test ModeA n u a l Configuration of Test ModeManual Mode 011 0 F F J 0 Overall Adjustment Mode011 0 6 3 B 0 011 0 5 9 a 0Setting method of Sound Skip Check Result Display Mode Sound Skip Check Result Display ModeT a t T r y000 1 s t Self-Diagnosis Display ModeClearing Self-Diagnosis Data and Total Recording Time Description of Error Indication CodesDescription of Indication History RECKey Indication Key Check ModeE s N Section Electrical AdjustmentsE s O K ? E sC h P W M C l P W MR h V c l R h V c hS S Y E t T m pD R U N D O KO O K Laser Power CheckE s u m e E s C l rBlock Diagram Servo Section Section DiagramsSignal Path REC DigitalSignal Path Play Analog OUT REC Analog REC Digital Block Diagram A/D, D/A CONVERTER, Audio SectionBlock Diagram KEY CONTROL/DISPLAY/POWER Supply Section JEW Printed Wiring BoardSemiconductor Location MZ-R90/R91 Waveforms IC Block Diagrams IC301IC501 SN761056ADBT IC304, 305 RN5RZ25AA-TRIC602 IC601IC902 IC603IC605 XC6367B103MR IC803 XC6383C301MR IC901 IC804 RV5C348A-E2IC PIN Function Description Swdt VDC0Sclk VSC0VSIO1 VDIO1Xras IxoeApcref XlrfLddr VDC4Pause KEY Sync RECSense WrpwrSleep FfclrTSB Edge GND SWRMC KEY Half LockSET KEY REC KEYHK, CH, JEW Section Exploded ViewsPanel Section MZ-R90 Chassis section Not supplied Panel Section MZ-R91102 103 104 108 109 Chassis Section101 105 113 112 114 106 110 107 111 109 MD-MECHANISM Deck Section Main Electrical Parts ListCAP, Chip Ceramic Chip 5PFFILTER, Chip EMI Common Mode ConnectorCXD2660GA IC MPC17A56FTAEBFET HAT2050T-EL FET HAT2051T-ELFET Transistor ZDT6718TAOPEN/CLOSE Detect SwitchComposition Circuit Block SWITCH, Slide Synchro REC SWITCH, Slide HoldThermistor TH901 1-803-795-21 THERMISTOR, Positive Vibrator MiscellaneousSubject Addition of Korean Model Correction MZ-R90/R91Hong Kong Model Korean Model Electrical Parts ListExploded Views Indicates changed portion.EXPLODED Views 112 105 106 #114151 176 @ IC MPC18A31FTAEB IC MPC17A56FTA