Contents
Main
SERVICE MANUAL
Audio playing system
Continued on next page
PORTABLE MINIDISC RECORDER
Stereo LP4
TABLE OF CONTENTS 1. SERVICING NOTES 2. GENERAL 3. DISASSEMBLY
4. TEST MODE 5. ELECTRICAL ADJUSTMENTS 6. DIAGRAMS
7. EXPLODED VIEWS
8. ELECTRICAL PARTS LIST
OPTICAL PICK-UP FLEXIBLE BOARD
SECTION 1 SERVICING NOTES
MZ-R909 SECTION 2 GENERAL
instruction manual.
10
9
8
SECTION 3 DISASSEMBLY
3-2. PANEL ASSY, BOTTOM
3-3. PANEL ASSY, UPPER SECTION
3-4. LCD MODULE, PANEL ASSY, UPPER
3-5. MAIN BOARD ASSY
3-6. CASE ASSY, BATTERY, MAIN BOARD
3-7. STRIP, ORNAMENTAL
*
spring (arm), tension
boss
*
3-8. MD MECHANISM DECK (MT-MZR909-171), CHASSIS ASSY, SET
boss
MD mechanism deck (MT-MZR909-171)
screw (1.4)
MZ-R909
3-9. SERVICE ASSY, OP (LCX-4R)
3-10. HOLDER ASSY
3-11. MOTOR, DC (SLED) (M602)
gear (SA)
motor, DC (sled) (M602)
two screws (M1.4)
3-12. MOTOR, DC (SPINDLE) (M601), MOTOR, DC (OVER WRITE HEAD UP/DOWN) (M603)
Operation in Setting the Test Mode
Releasing the Test Mode
[HOLD]
888 003 V1.000
SECTION 4 TEST MODE
Outline
Setting Method of Test Mode
Configuration of Test Mode
000 Manual
Manual Mode
[Adjusted value write]
[Medium item switching]
[DISPLAY]
011 C68S01 011 OFFJ01 011 063B01 011 059A01
0XX 1 0000
011 015F01
Item Title Display
011 LrefPw 01
Reset the Error Display Code
Jog and Key Check Mode
000 PUSH
000 P**R**
000 **
000 JOG OK
000 JOG- 1
000 FF **
000 rPLAY **
888 SET OK **
888 RMC OK **
861 V1num **
SECTION 5 ELECTRICAL ADJUSTMENTS
862 V1dat **
021 ResOK?
021 ResNV CC
863 V2num **
762 Vc1PWM **
764 Vl PWM **
000 Assy00
866 V3dat **
000 ADJ OK
Remote commander LCD display
)
011 LrefPw **
+
000 Assy**
000 Assy11
000 OfstOK
035 Ofst**
000 Assy11
000
000
OK
CD
023 Patch00
043 Resume CC
023 100000
022 ***SDD
023 0FFFDF
023 100402
023 100500
023 101800
023 ****09
023 Patch01
023 10180A
023 101900
023 102000
023 101FE1
023 101F00
023 10200E
023 Patch09
023 102F00
023 102E9F
023 102E00
023 102FE5
023 103200
023 103900
023 103804
023 103800
023 1039E0
023 103E00
023 104100
023 10400E
023 104000
023 1041F0
022 PatClr CC
023 102800
022 ***SDD
023 104200
023 102A00
023 102D00
023 104800
023 Patch 01
023 102DD0
023 104810
023 104A00
023 105300
023 105210
023 105006
023 105400
023 105B00
023 105AA0
023 105A00
023 105807
023 105C00
023 105F00
023 Patch 09
023 106303
023 106300
SECTION 6 DIAGRAMS
6-1. BLOCK DIAGRAM SERVO Section
6-2. BLOCK DIAGRAM AUDIO Section
F
B
C
SIGNAL PATH : PLAYBACK : REC (ANALOG IN) : REC (DIGITAL IN)
6-3. BLOCK DIAGRAM KEY CONTROL/DISPLAY/POWER SUPPLY Section
F D
G
+
6-4. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
A B C D E F G H I
1 2 3 4 5 6 7 8 9 10 11
6-5. PRINTED WIRING BOARD MAIN board (Component Side) :Uses unleaded solder.
Semiconductor Location
Ref. No. Location D603 F-8 IC805 E-6 Q602 G-9
A B C D E F G H I
1 2 3 4 5 6 7 8 9 10 11
6-6. PRINTED WIRING BOARD MAIN board (Conductor Side) :Uses unleaded solder.
Semiconductor Location
(Page 41)
(Page 40)
(Page 43)
6-9. SCHEMATIC DIAGRAM MAIN Board (3/4)
CSP(Chip Size Package)
*
(Page 43) (Page 41)
(Page 40)
6-10. SCHEMATIC DIAGRAM MAIN Board (4/4)
(Page 41)
IC Block Diagrams IC301 AK5354VT-E2
IC303 NJM2173APC1 (TE2)
IC302 AN17020A-VB
IC501 SN761057DBT
IC551 SC111258FCR2
IC601 XPC18A22FCR2
IC901 XPC18A32FCR2
6-11. IC PIN FUNCTION DESCRIPTION
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SECTION 7 EXPLODED VIEWS
Page
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SECTION 8 ELECTRICAL PARTS LIST