Contents
Main
MZ-G750/R700
SERVICE MANUAL
MZ-R700
FM/AM PORTABLE MINIDISC RECORDER
SPECIFICATIONS
US Model Canadian Model AEP Model UK Model E Model Australian Model Tourist Model Chinese Model
Page
1. SERVICING NOTE 2. GENERAL
3. DISASSEMBLY
8. ELECTRICAL PARTS LIST
4. TEST MODE
TABLE OF CONTENTS 5. ELECTRICAL ADJUSTMENTS
MZ-G750/R700 SECTION 1 SERVICING NOTE
OPTICAL PICK-UP FLEXIBLE BOARD
Page
Page
MZ-G750/R700
SECTION 3 DISASSEMBLY
3-2. PANEL ASSY, UPPER
3-1. PANEL ASSY, LOWER
3-3. LCD MODULE
3-4. MAIN BOARD
3-5. MD MECHANISM DECK
3-6. SERVICE ASSY, OP
3-7. HOLDER ASSY
3-8. MOTOR FLEXIBLE BOARD
two screws(M1.4), precision pan
moter, DC (sled) (M602)
Remove four solders of motor flexible board.
3-9. MOTOR, DC (M602)
3-10. MOTOR, DC (M601), MOTOR, DC (M603)
SECTION 4 TEST MODE
4-3. Operation in Setting the Test Mode
4-4. Releasing the Test Mode
88:88 00 5
Ver 1.200
4-5. Configuration of Test Mode
4-6. Manual Mode
00 0 Manual
4-8. Self-Diagnosis Result Display Mode
[ENTER]
4-7. Overall Adjustment Mode
0 113A4S1D
0 110FEJ1D
0 11063B1D
0 11072A1D
0 11LrefPw 1D
4-9. Reset the error display code
4-11. Key Check Mode
4-10. Sound Skip Check Result Display Mode
0 00P R
0 00P R
0 00EIB 0 00Stat 0 00Adre 0 00BEmp 0 00######
0 00P R 0 00BOvr 0 00Bful 0 00Rtry 0 00######
0 00
0 00RMC OK
SECTION 5 ELECTRICAL ADJUSTMENTS
5-1. Outline
5-2. Precautions for Adjustment
5-3. Adjustment Sequence
8 32Pw-T W
5-5. Power Supply Manual Adjustment
8 62V1dat
8 71V5num
0 00Assy 00
8 72V5dat
7 62VclPWM
0 14SetTmp
0 10Laser
0 11LrefPw
0 12HrefPw
0 13WritPw
5-8. Overall Adjustment Mode
Configuration of overall adjustment
Note: Adjust the CD first, when performing adjustment.
Adjustment/checking and Connection Location:
0 00Assy
0 00OfstOK
0 00MO OK
0 00Assy 11
0 35Ofst
0 43ResClr
5-10. Patch Data Rewriting When Nonvolatile Memory was Replaced
0 43Resume CC
0 43Res
0 22PatClr CC
0 23Patch 00
0 230D5800
0 230D581E
0 230D5F20
0 230D6000
0 230D6204
0 230D6500
0 230D6520
0 23Patch 01
0 230D61A1
0 230D6100
0 230D6120
0 230D6400
0 230D64F4
0 230D6500
0 230D7200
0 230D7205
0 230D7300
0 230D73D3
0 230D7400
0 230D7500
0 230D751C
0 230D7600
0 230D7603
0 230D7800
SECTION 6 DIAGRAMS
6-1. IC PIN FUNCTION DESCRIPTION
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MAIN BOARD MOTOR FLEXIBLE BOARD
(1/2)
CLV MON U
CLV MON V
CPVO
MAIN BOARD
Signal path : PLAYBACK : REC(ANALOG IN) : REC(DIGITAL IN)
(Page 35)
!
6-4. BLOCK DIAGRAM SYSTEM CONTROL / POWER SECTION
(Page 35)
1 A B C D E F G H I J
234567891011121314
Lead Layouts
( ) : MZ-G750 only
Lead layout of conventional IC CSP (chip size package)
1 A B C D E F G H I J
234567891011121314
( ) : MZ-G750 only
*
i
1
IC901 th (CLK)
IC601 4 (CLK)
IC501 rs (FE) (PB mode)
IC501 ed (RF OUT) (PB mode)
1
5 2 4
(Page 42)
8
1
*
(Page 43)
(Page 41)
(Page 43)
6-8. SCHEMATIC DIAGRAM MAIN SECTION (3/3) Refer to page 44 for IC Block Diagrams.
2
(Page 42)
IC B/D IC B/D
IC BLOCK DIAGRAMS IC501 SN761057DBT
IC1002 XC61CN1102MR (MZ-G750) IC1004 XC61CN1702MR (MZ-G750) IC1005 XC61CN1002MR (MZ-G750)
IC1006 XC6371C271PR (MZ-G750)
123
VLX LIMITER
IC601 XPC18A22FCR2
IC901 XPC18A32FCR2
IC301 AK5354VT
IC302 TA2131FL
SECTION 7 EXPLODED VIEWS
7-1. PANEL SECTION
Page
7-3. MD MECHANISM DECK SECTION (MT-MZR700-172)
MZ-G750/R700 SECTION 8 ELECTRICAL PARTS LIST
