Sony MZR-701, MZR-701-DPC Service manual
MZ-R701/R701DPC
SERVICE MANUAL
Ver 1.0 2001. 01Ver 1.0 2002. 05
US and foreign patents licensed
from Dolby Laboratories.
E Model
MZ-R701/R701DPC
Australian Model
East European Model
Chinese Model
MZ-R701
Model Name Using Similar Mechanism MZ-G750/R700
Mechanism Type MT-MZR700-172
Optical Pick-up Name LCX-4R
MD recorder
Audio playing system
MiniDisc digital audio system
Laser diode properties
Material: GaAlAs MQW
Wavelength: λ = 790 nm
Emission duration: continuous
Laser output: less than 44.6 µW
(This output is the value measured at a
distance of 200 mm from the lens surface
on the optical pick-up block with 7 mm
aperture.)
Recording and playback time
When using MDW-80
Maximum 160 min. in monaural
Maximum 320 min. in stereo
Revolutions
350 rpm to 2,800 rpm (CLV)
Error correction
ACIRC (Advanced Cross Interleave Reed
Solomon Code)
Sampling frequency
44.1 kHz
Sampling rate converter
Input: 32 kHz/44.1 kHz/48 kHz
Coding
ATRAC (Adaptive TRansform Acoustic
Coding)
ATRAC3-LP2
ATRAC3-LP4
SPECIFICATIONS
Modulation system
EFM (Eight to Fourteen Modulation)
Number of channels
2 stereo channels
1 monaural channel
Frequency response
20 to 20,000 Hz ± 3 dB
Wow and Flutter
Below measurable limit
Inputs
Microphone: stereo mini-jack, minimum
input level 0.35 mV
Line in: stereo mini-jack, minimum input
level 49 mV
Optical (Digital) in: optical (digital) minijack
Outputs
i: stereo mini-jack, maximum output level
5 mW + 5 mW, load impedance 16 ohm
General
Power requirements
Sony AC Power Adaptor (supplied)
connected at the DC IN 3 V jack:
240 V AC, 50 Hz (Australian model)
220 V AC, 50 Hz (EE, CH, AR model)
230-240 V AC, 50 Hz (HK model)
100-240 V AC, 50/60 Hz (E model)
Nickel cadmium rechargeable battery
NC-WMAA (supplied)
LR6 (size AA) alkaline battery (not
supplied)
•Abbreviation
EE : East European model
CH : Chinese model
HK : Hong Kong model
AR : Argentine model
– Continued on next page –
9-874-004-01
2002E0400-1
© 2002. 05
PORTABLE MINIDISC RECORDER
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
1
MZ-R701/R701DPC
Battery life
Batteries Stereo LP2 LP4
NC-WMAA Nickel Cadmium
rechargeable battery
LR6 (SG)
Sony alkaline dry battery
1)
2)
3)
4)
Dimensions
Approx. 81 × 28.1 × 74.4 mm (w/h/d)
without projections.
Mass
Approx. 118 g the recorder only
Supplied accessories
NC-WMAA nickel cadmium rechargeable battery (1)
AC power adaptor (1)
Headphones/earphones with a remote control (1)
Optical cable (1)
Rechargeable battery carrying case (1)
Carrying pouch/carrying case with a belt clip (1)
Design and specifications are subject to change
without notice.
1)
3)
4)
The battery life may be shorter due to operating conditions, the
temperature of the location, and varieties of batteries.
Measured value by the standard of JEITA (Japan Electronics and
Information Technology Industries Association).
When using a 100% fully charged rechargeable battery.
When using a Sony LR6 (SG) “STAMINA” alkaline dry battery
(produced in Japan).
(Unit: approx.hours) (JEITA2))
Recording 4 6 7.5
Playback 13 14.5 18
Recording 9 13 16
Playback 40 46 53
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270°C
during repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
SAFETY-RELATED COMPONENT WARNING!!
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.
REPLACE THESE COMPONENTS WITH SONY P ARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL
OR IN SUPPLEMENTS PUBLISHED BY SONY.
2
TABLE OF CONTENTS
MZ-R701/R701DPC
1. SERVICING NOTE......................................................... 4
2. GENERAL
Looking at the controls ....................................................... 5
3. DISASSEMBLY
3-1. Bottom Panel Assy.............................................................. 6
3-2. Upper Panel Assy................................................................ 7
3-3. LCD Module .......................................................................7
3-4. Main Board ......................................................................... 8
3-5. MD Mechanism Deck ......................................................... 8
3-6. OP Service Assy.................................................................. 9
3-7. Holder Assy......................................................................... 9
3-8. Motor Flexible Board ........................................................ 10
3-9. DC Motor (M602) ............................................................. 10
3-10. DC Motor (M601), DC Motor (M603) .............................11
4. TEST MODE
4-1. Outline............................................................................... 12
4-2. Setting Method of Test Mode............................................ 12
4-3. Operation in Setting the Test Mode................................... 12
4-4. Releasing the Test Mode ...................................................12
4-5. Configuration of Test Mode .............................................. 13
4-6. Manual Mode ....................................................................13
4-7. Overall Adjustment Mode .................................................14
4-8. Self-diagnosis Result Display Mode ................................. 14
4-9. Result the Error Display Code .......................................... 15
4-10. Sound Skip Check Result Display Mode .......................... 16
4-11. Key Check Mode............................................................... 16
5. ELECTRICAL ADJUSTMENTS
5-1. Outline............................................................................... 18
5-2. Precautions for Adjustment............................................... 18
5-3. Adjustment Sequence........................................................ 18
5-4. NV Reset ...........................................................................18
5-5. Power Supply Manual Adjustment.................................... 19
5-6. Temperature Correction..................................................... 20
5-7. Laser Power Check ........................................................... 20
5-8. Overall Adjustment Mode................................................. 21
5-9. Mode Settings ................................................................... 23
5-10. Resume Clear .................................................................... 23
6. DIAGRAMS
6-1. IC Pin Descriptions ..........................................................24
6-2. Block Diagram – Servo Section – ..................................... 31
6-3. Block Diagram – Audio Section – .................................... 32
6-4. Block Diagram – System Control/Power Section – .......... 33
6-5. Printed Wiring Board – Main Section – ............................ 34
6-6. Schematic Diagram – Main Section (1/3) – ...................... 37
6-7. Schematic Diagram – Main Section (2/3) – ...................... 38
6-8. Schematic Diagram – Main Section (3/3) – ...................... 39
6-9. IC Block Diagrams............................................................ 40
7. EXPLODED VIEWS
7-1. Panel Section..................................................................... 42
7-2. Chassis Section ................................................................. 43
7-3. MD Mechanism Deck Section .......................................... 44
8. ELECTRICAL PARTS LIST...................................... 45
3
MZ-R701/R701DPC
SECTION 1
SERVICING NOTE
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 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-4R)
The laser diode in the optical pick-up block may suffer electrostatic break-down easily. When handling it, perform soldering
bridge to the laser-tap on the flexible board. Also perform measures against electrostatic break-down sufficiently before the operation. 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 conv e x part of the open/close detect switch
(S806 on MAIN board) with a tape in advance.
Handle the FLEXIBLE board (over write head) with care, as it
has been soldered directly to the MAIN board.
In repairing the component side of MAIN board, connect the
FLEXIBLE board (over write head) and the MAIN board with
the lead wires in advance. (See page 8)
FLEXIBLE board
(Over write head)
Tape
upper panel assy
laser-tap
OPTICAL PICK-UP FLEXIBLE BOARD
S806
MAIN board
• Replacement of CXD2674-204GA (IC801) used in this set
requires a special tool.
• On the set having the microcomputer version 1.000, some
adjusted values were set in the manual mode at the shipment,
but these data will be cleared when the NV is reset. Therefore,
on the set having the microcomputer version 1.000, change the
adjusted values following the Change of Adjusted Values
immediately after the NV was reset. (See page 18)
4
SECTION 2
GENERAL
MZ-R701/R701DPC
This section is extracted from
instruction manual.
5
MZ-R701/R701DPC
)
SECTION 3
DISASSEMBLY
Note : This set can be disassemble according to the following sequence.
SET
3-4. MAIN BOARD
3-1. BOTTOM PANEL ASSY
(Page 6)
3-2. UPPER PANEL ASSY
(Page 7)
(Page 8)
3-5. MD MECHANISM DECK
(Page 8)
3-6. OP SERVICE ASSY
3-3. LCD MODULE
(Page 9)
(Page 7)
3-7. HOLDER ASSY
(Page 9)
Note : Follow the disassembly procedure in the numerical order given.
3-1. BOTTOM PANEL ASSY
3-8. MOTOR FLEXIBLE
BOARD
(Page 10)
3-9. DC MOTOR (M602)
(Page 10)
3-10. DC MOTOR (M601),
DC MOTOR (M603)
(Page 11)
3
MI screws (1.4x2.0)
4
claw
2
MI screws (1.4x2.0
1
6
bottom panel assy
5
6
3-2. UPPER PANEL ASSY
)
2
MI screws (1.4x2.0)
4
CN804
3
upper panel assy
1
MI screws (1.4x2.0
MZ-R701/R701DPC
3-3. LCD MODULE
2
screws (1.7x2.5)
3
1
screws (1.7x2.5)
4
LCD module
claws
upper panel (B) sub assy
7
MZ-R701/R701DPC
k
3-4. MAIN BOARD
2
arm
5
screws (M1.4x2)
qa
Remove
the solder.
4
screws (M1.7x3)
7
8
CN501
6
Remove the solders.
3
screws (M1.4x2)
qd
MAIN board
Remove the solder.
9
3-5. MD MECHANISM DECK
q;
battery case assy
boss
qs
battery coil spring
boss
3
MD mechanism dec
2
set chassis assy
1
CN502
1
MI screws (1.4x1.6)
8
3-6. OP SERVICE ASSY
3
precision pan screw
(M1.4)
4
rack spring (s)
1
washer (0.8 - 2.5)
2
gear (SA)
5
precision pan screw (M1.4)
6
thrust detent spring
8
Pull off the lead screw.
B
7
MZ-R701/R701DPC
Opening the over write head
9
toward the direction
OP service assy toward
the direction
Note: Do not open the entire assy
forcibly, when opening
the over write head.
B
.
A
, remove the
3-7. HOLDER ASSY
over write head section
3
1
Open the holder assy.
Remove the holder assy to
direction of the arrow
A
B
.
A
2
B
boss
9
MZ-R701/R701DPC
3-8. MOTOR FLEXIBLE BOARD
1
Remove four solders of
DC motor (sled) (M602).
4
adhesive sheet
Note: Align a circular hole in the stripping paper
with a circular hole in the DC motor (sled),
when mounting the motor
flexible board.
2
Remove two solders of
DC motor (over write head up/down) (M603).
3
Remove four solders of
DC motor (spindle) (M601).
5
motor flexible board
DC motor (sled)
circular hole
3-9. DC MOTOR (M602)
4
two precision pan screws (M1.4)
5
DC moter (sled) (M602)
3
Remove four solders of
motor flexible board.
1
washer (0.8 - 2.5)
2
gear (SA)
10
1
Remove six solders of
motor flexible board.
4
three precision pan
screws (M1.4)
qs
DC moter (over write head up/down)
(M603)
6
two precision pan screws (M1.4)
qa
gear chassis assy
0
screw
(M1.2
×
1.5)
9
gear (HA)
8
gear (HB)
7
washer (0.8 - 2.5)
2
washer (0.8 - 2.5)
3
gear (HC)
5
DC moter
(spindle)
(M601)
DC motor
(over write head up/down)
(M603)
gear chassis assy
gear (HA)
2.65 mm
Note: Press-fit the gear (HA) up to the
position of the DC motor (over write
head up/down) (M603) as shown
below.
3-10. DC MOTOR (M601), DC MOTOR (M603)
MZ-R701/R701DPC
11
MZ-R701/R701DPC
SECTION 4
TEST MODE
4-1. Outline
•This set provides the Overall adjustment mode that allows CD
(PB) and MO (REC/PB) disk to be automatically adjusted when
in the test mode. In this overall adjustment mode, the disc is
discriminate between CD and MO, and each adjustment is
automatically executed in order. If a fault is found, the system
displays its location. Also, the manual mode allows each
individual adjustment to be automatically adjusted.
• Operation in the test mode is performed with the set. A key
having no particular description in the text, indicates a set key.
•For the LCD display, the LCD on the set is shown.
4-2. Setting Method of T est Mode
There are two different methods to set the test mode:
1 Short SL801 (TEST) on the MAIN board with a solder bridge
(connect pin 3 of IC801 to the ground). Then, turn on the
power.
MAIN BOARD (SIDE B)
4-3. Operation in Setting the Test Mode
•When the test mode becomes active, first the display check mode
is selected.
• Other mode can be selected from the display check mode.
•When the test mode is set, the LCD repeats the following display.
This set LCD display
AM
All lit
All off
Microcomputer
version
display
• When the
BASS
Ver 1.300
X key is pressed and hold down, the display at that
SYNCMONOLP24 REC
PM
F
REC DATE REMAIN
time is held so that display can be checked.
88:88
1 SHUFF PGM
00 5
e
R817
C814
C807C808R806
C809
AP817
X801
C821
C815
AP828
Caution: On the set having the microcomputer version 1.000,
some adjusted values were set in the manual mode at
the shipment, but these data will be cleared when the
NV is reset. Therefore, on the set having the microcomputer version 1.000, change the adjusted values
following the Change of Adjusted Values immediately
after the NV was reset (see page 18).
4-4. Releasing the Test Mode
For test mode set with the method 1:
Turn off the power and open the solder bridge on SL801 (TEST)
on the MAIN board.
Note: Remove the solders completely. Remaining could be shorted
with the chassis, etc.
For test mode set with the method 2:
Turn off the power.
Note: If electrical adjustment (see page 18) has not been finished
completely, always start in the test mode. (The set cannot
start in normal mode)
FB801
SL801
(TEST)
2 In the normal mode, turn on the [HOLD] switch. While press-
ing the [VOL --] key press the following order:
> t > t . t . t > t
. t > t . t X t X
12
MZ-R701/R701DPC
4-5. Configuration of Test Mode
Test Mode (Display Check Mode)
Press the > or VOL + key.
Manual Mode
Press the x key.
Press the . or VOL – key.
Overall Adjustment Mode
Press the x key.
ENTER key
Self-diagnosis Result Display Mode
Press the x key.
Press the N or REC key.
Sound Skip Check Result Display Mode
Press the x key.
Press the T MARK or ENTER key for several
seconds (about 3 seconds).
Key Check Mode
The key check quits, or open the upper panel.
Servo Adjustment
Audio Adjustment
Power Supply Adjustment
OP Alignment Adjustment
Electrical Offset Adjustment
Power Supply Adjustment
Auto Item Feed
CD Overall Adjustment/
MO Overall Adjustment
Major Item Switching
x key N key
Medium Item Switching
x key N key
Minor Item Switching
VOL + key: 100th Place of item number
increase.
VOL – key: 100th Place of item number
decrease.
VOL + key: 10th Place of item number
increase.
VOL – key: 10th Place of item number
decrease.
N key: Unit Place of item number
increase.
. key: Unit Place of item number
decrease.
Adjusted Value Variation
VOL + key: Increases the
adjusted value.
VOL – key: Decreases the
adjusted value.
Adjusted Value Write
X key: When adjusted value is
chaged:
Adjusted value is written.
When adjusted value is
not changed:
That item is adjusted
automatically.
4-6. Manual Mode
Mode to adjust or check the operation of the set by function.
Normally, the adjustment in this mode is not executed.
However, the Manual mode is used to clear the memory, power
supply adjustment, and laser power check before performing
automatic adjustments in the Overall Adjustment mode.
•Transition method in manual mode
1. Setting the test mode (see page 12).
2. Press the > or [VOL +] key activates the manual mode
where the LCD display as shown below.
This set LCD display
Manual
3. During each test, the optical pick-up moves outward or inward while the N or . key is pressed for several seconds respectively.
4. Each test item is assigned with a 3-digit item number;
100th place is a major item, 10th place is a medium item, and
unit place is a minor item.
The values adjusted in the test mode are written to the
nonvolatile memory (for the items where adjustment was
made).
00 0
13
MZ-R701/R701DPC
5. The display changes a shown below each time the
[ENTER] key on the set is pressed.
• Address & Adjusted Value Display
This set LCD display
0 113A4S1D
adjustment value
address
• Jitter Value & Adjusted Value Display
This set LCD display
item number
0 110FEJ1D
adjustment value
jitter value
• Block Error Value & Adjusted Value Display
This set LCD display
item number
0 11063B1D
adjustment value
block error value
• ADIP Error Value & Adjusted Value Display
This set LCD display
item number
0 11072A1D
4-8. Self-diagnosis Result Display Mode
This set uses the self-diagnostic function system in which if an
error occurred during the recording or playing, the mechanism
control block and the power supply control block in the
microcomputer detect it and record its cause as history in the
nonvolatile memory.
By checking this history in the test mode, you can analyze a fault
and determine its location.
Total recording time is recorded as a guideline of how long the
optical pick-up has been used, and by comparing it with the total
recording time at the time when an error occurred in the selfdiagnosis result display mode, you can determine when the error
occurred.
Clear both self-diagnosis history data and total recording time, if
the optical pick-up was replaced.
• Self-diagnosis result display mode setting method
1. Setting the test mode (see page 12).
2. In the display check mode, press the [ENTER] key activates the
self-diagnosis result display mode where the LCD display as
shown below.
This set LCD display
0 XX1 0010
history
code
3. Then, each time the > key is pressed, LCD display descends
by one as shown below. Also, the LCD display ascends by one
when the . key is pressed.
Total recording time when error occurred
error display code
adjustment value
ADIP error value
• Item Title Display
This set LCD display
item number
0 11LrefPw 1D
item title
adjustment value
However in the power mode (item number 700’s), only the
item is displayed.
6. Quit the manual mode, and press the
test mode (display check mode).
4-7. Overall Adjustment Mode
Mode to adjust the servo automatically in all items.
Normally, automatic adjustment is executed in this mode at the
repair.
For further information, refer to “Section 5 Electrical Adjustments”
(see page 18).
item number
x key to return to the
0 XX1
0 XXN
0 XXN1
0 XXN2
0 XXR_
XX
[ENTER] key on set is pressed with this display, the LCD
If the
switches to the simple display mode.
4. Quit the self-diagnosis result display mode, and press the x key
to return to the test mode (display check mode).
: Error code
: Total recording time
14
MZ-R701/R701DPC
• Description of error indication codes
Problem Indication code Meaning of code Simple display Description
No error 00 No error --- No error
01
Servo system error 02 High temperature Temp High temperature
03 Focus error Fcus Disordered focus
04 Spindle error Spdl Abnormal rotation of disc
TOC error
Power supply system error 22 Low battery LBat Momentary interruption detected
Offset system error
11 TOC error TOC Faulty TOC contents
12 Data reading error Data Data could not be read at SYNC
31 Offset error Ofst Offset error
32
33
34
Illegal access target
address was specified
Focus error
ABCD offset error ABCD offset error
Tracking error
Offset error Offset error
X1 tracking error
Offset error Offset error
Adrs Attempt to access an abnormal address
ABCD
TE
X1TE
Focus error
Tracking error
X1 tracking error
• Description of indication history
History code number Description
1The first error
N The last error
N1 One error before the last
N2 Two errors before the last
R_ Total recording time
4-9. Reset the Error Display Code
After servicing, reset the error display code.
• Setting method of reset the error display code
1. Setting the test mode (see page 12).
2. Press [ENTER] key activates the self-diagnosis result display
mode.
3. To reset the error display code, press the X key (2 times) when
the code is displayed (except “R_****”).
(All the data on the 1, N, N1 and N2 will be reset)
15
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