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SONY MZ-R900 MD WALKMAN REVIEW
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Popular Sony MZ-R900 Manual Pages
Service Manual - Page 1
SERVICE MANUAL
Ver 1.2 2001. 03
Photo: Red type
MZ-R900
US Model Canadian Model
AEP Model UK Model E Model
Australian Model Chinese Model Tourist Model
US and foreign patents licensed from the lens surface on next page - LP2 ATRAC3 -
in monaural Maximum 320 min. PORTABLE MINIDISC RECORDER
9-927-991-13 2001C0500-1 C 2001.3
Sony Corporation
Audio Entertainment Group General Engineering ...
Service Manual - Page 2
... VIEWS 7-1. MD Mechanism Deck Section (MT-MZR900-171) ....... 41
8. COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. Strip, Ornamental 8 3-8. Service Assy, OP (LCX-4R 9 3-10. Motor, DC (Sled) (M602 11 3-13. DIAGRAMS 6-1. MZ-R900
3) Measured in accordance with the EIAJ...
Service Manual - Page 3
...; If the nonvolatile memory was replaced on the set in the manual mode at the replacement of nonvolatile memory. (See page...SERVICING NOTES
MZ-R900
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic break-down because of procedures other than those specified herein may be dam- It is included in the repair parts...
Service Manual - Page 5
PANEL ASSY, BOTTOM
3-3. MOTOR FLEXIBLE BOARD
3-10. DISASSEMBLY FLOW
SET
SECTION 3 DISASSEMBLY
MZ-R900
3-2. STRIP, ORNAMENTAL
3-8. HOLDER ASSY
3-12. PANEL ASSY,...Note: On installation, adjust the position of arrow A.
5 "CASE ASSY, BATTERY", "MAIN BOARD"
3-7. SERVICE ASSY, OP (LCX-4R)
3-11. "MD MECHANISM DECK (MT-MZR900-171)", "CHASSIS ASSY, SET"
3-9. • This set can be ...
Service Manual - Page 8
... disengage two bosses b
A
* and convex portions pointed
with
@
a boss b boss
3-8. STRIP, ORNAMENTAL
5 Remove the "strip, ornamental" in the direction of arrow C. "MD MECHANISM DECK (MT-MZR900-171)", "CHASSIS ASSY, SET"
2 boss
3 MD mechanism deck (MT-MZR900-171)
1 screw (1.4)
2 boss 4 spring (arm), tension 5 chassis assy, set
1 screw (1.4)
8
MZ-R900
3-7.
Service Manual - Page 11
... ) (M603)
5 motor, DC (spindle) (M601)
0 gear (HA) 8 gear (HB) 7 washer (0.8-2.5)
2 washer (0.8-2.5)
3 gear (HC)
11
MOTOR, DC (SLED) (M602)
4 two screws (M1.4)
5 motor, DC (sled) (M602)
MZ-R900
1 Remove four solders of motor flexible board. "MOTOR, DC (SPINDLE) (M601)", "MOTOR, DC (OVER WRITE HEAD UP/DOWN) (M603)"
1 Remove six solders of motor flexible...
Service Manual - Page 12
... the test mode. MZ-R900
SECTION 4 TEST MODE
Outline • This set provides the Overall adjustment mode that allows CD
and MO discs to be automatically adjusted. • Operation in the test mode is performed with the set. Microcomputer
version
003 V1.000
display
Destination code 002 : Except US, Canadian models 003 : US, Canadian models
3 79 77...
Service Manual - Page 13
...is not executed. Press the > or[VOL+] key activates the manual mode where
the LCD display as shown below. During each test,...Diagnosis Result Display Mode] Press the x key
Press the N or [REC] key [Sound Skip Check Result Display Mode]
Press the x key
...this mode is pressed for several seconds respectively.
4. MZ-R900
Configuration of the set by function. or [VOL --] key
[Overall ...
Service Manual - Page 14
...key is pressed.
1
0XX 1 * * * * 0XX N * * * * 0XX N 1 * * * * 0XX N 2 * * * * 0XX R _ * * * *
1
XX : Error code * * * * : Total recording time
If the [JOG LEVER $L% Q] (up )
key or [DISPLAY] key on remote commander is recorded as shown below. Total recording time is pressed with the total recording time at the repair. Setting the test mode (see page 17). For further information...
Service Manual - Page 15
...MZ-R900
• Description of Error Indication Codes
Problem No error Servo system error
TOC error Power supply system error
Offset system error
Indication code Meaning of Indication History
History code number 1 N N1 N2 R_
Description The first error The last error One error before the last. Total recording time
Reset the error display code After servicing, reset the error display code...
Service Manual - Page 16
... in the play mode appears. Press the N key or [REC] key, and the playing or recording
sound skip result display mode...errors (hex.)
3. key is pressed, the display item moves up by one , then if the N key is full, and sounds were dumped Buffer capacity becomes less, and forcible writing occurred Retry times over
4. MZ-R900
Sound Skip Check Result Display Mode This set can check if the set...
Service Manual - Page 17
...and measuring instruments.
• Test CD disc
TDYS-1
(Part No. : 4-963-646-01)
• SONY MO disc available on the set are to quit the manual mode, and activate the test mode (display check mode... value. 4) Select the manual mode of the test mode, and set item number
832 (see page 13). SECTION 5 ELECTRICAL ADJUSTMENTS
MZ-R900
Outline • In this set, automatic adjustment of CD ...
Service Manual - Page 18
... Adjusted value
1. digital voltmeter
MAIN board
AP915 (VL) AP912 (GND)
18 MZ-R900
7) Select the manual mode of the test mode, and set item number
872 (see page 13). Press the X key to write the ... value. (The item number changes to write the adjusted value. 10) Select the manual mode of the test mode, and set item number 871 (see page 12). 3. Press the . Remote commander LCD display
...
Service Manual - Page 42
Description
3-220-477-01 SHEET (MD), INSULATING X-3379-320-5 CHASSIS ASSY, SET 4-218-233-07 SCREW (1.4), MI 3-224-089-01 SHEET (TERMINAL), INSULATING 4-218-229-29 SCREW (1.4), MI
...LOCK), COMPRESSION
3-229-882-01 SPACER (MINUS)
40 No.
51 52 53 54 55
Part No. No.
* 59 60 61 62 63
Part No. MZ-R900
7-2.
CHASSIS SECTION
MT-MZR900-171
51 71 53
52
70 54
60
57 73
72 68
56 53
58
55...
Service Manual - Page 43
...
106 118
A
108 107 109
115 122 not supplied
103
B
M602
113
114
109
109
116
The components identified by mark 0 or dotted line with part number specified. Les composants identifiés par une marque 0 sont critiques pour la sécurité. MZ-R900
7-3.
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