Sony TXD-RE210 User manual

MICROFILM
TXD-RE210
AEP Model
SERVICE MANUAL
COMPACT DISC CASSETTE DECK
Model Name Using Similar Machanism NEW
CD CD Machanism Type CDM28-5BD23
Section Base Unit Name BU-5BD23
Optical Pick-up Type KSS-213B/S-N
Tape deck Model Name Using Similar Machanism TXD-R11
Section Tape Transport Mechanism Type TCM-190RB52C
Dolby noise reduction manufactured under license from
Dolby Laboratories Licensing Corporation.
“DOLBY” and the double-D symbol aare trademarks of
Dolby Laboratories Licensing Corporation.
SPECIFICATIONS

– 2 –
TABLE OF CONTENTS
Specifications ........................................................................... 1
1. SERVICING NOTE.......................................................... 3
2. GENERAL
Location and Function of Controls .................................... 4
3. DISASSEMBLY
3-1. Front Panel Removal .................................................. 5
3-2. CD Mechanism Removal ........................................... 5
3-3. Mechanism Deck Removal......................................... 6
4. ADJUSTMENTS
4-1. Mechanical Adjustments ............................................ 7
4-2. Electrical Adjustments ................................................ 7
5. EXPLANATION OF ICTERMINALS ..........................11
6. DIAGRAMS
6-1. Printed Wiring Boards – BD Section –..................... 14
6-2. Schematic Diagram – BD Section – ......................... 17
6-3. Schematic Diagram – Main Section – ...................... 22
6-4. Printed Wiring Boards – Main Section –.................. 27
7. EXPLODED VIEWS
7-1. Chassis Section ......................................................... 30
7-2. Panel Section ............................................................ 31
7-3. Mechanism Section -1 .............................................. 32
7-4. Mechanism Section -2 .............................................. 33
7-5. CD Mechanism Section -1........................................ 34
7-6. CD Mechanism Section -2........................................ 35
8. ELECTRICAL PARTS LIST ........................................ 36
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
This appliance is classified as a
CLASS 1 LASER product.
The CLASS 1 LASER
PRODUCT MARKING is lo-
cated on the rear exterior.
CAUTION
Useof controls or adjustments orperformance ofproceduresother
than those specified herein may result in hazardous radiation ex-
posure.
This caution label
is located inside
the unit.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK !OR DOTTED LINE
WITH MARK !ONTHE SCHEMATIC DIAGRAMS AND INTHE
PARTS LIST ARE CRITICALTO SAFE OPERATION.
REPLACETHESE COMPONENTS WITH SONY PARTSWHOSE
PART NUMBERS APPEAR AS SHOWN INTHIS MANUAL OR IN
SUPPLEMENTS PUBLISHED BY SONY.

– 3 –
SECTION 1
SERVICING NOTE
NOTES ON HANDLINGTHE OPTICAL PICK-UP
BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
breakdown because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic breakdown 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
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission, ob-
serve more than 30 cm away from the objective lens.
CHUCK PLATE JIG ON REPAIRING
On repairing CD section, playing a disc without the CD lid, use
Chuck Plate Jig.
rCode number of Chuck Plate Jig : X-4918-255-1
rDisc table getting out procedure on the power supply is OFF.
1
2
Disc table
3

– 4 –
SECTION 2
GENERAL
LOCATION AND FUNCTION OF CONTROLS
3
249!º
!∞ CD operating buttons
)±button
≠0button
·button
p(stop) button
P(pause) button
!§ RESET button
!¶ DISPLAY button
!• TIME button
!ª EDIT/TIME FADE button
@º CREAR button
@¡ CHECK button
@™ PHONES jack
@£ PHONE LEVEL control
1POWER switch
2Disc tray
3PLAY MODE button
4OPEN/CLOSE button
5REPEAT button
6CD SYNCHRO button
7FADER button
8ARL button
9Cassette deck
!º REC LEVEL control/AUTO indicator
!¡ DOLBY NR switch
!™ DIRection MODE switch
!£ Eject button
!¢ Tape operating buttons
rREC button
RREC MUTE button
0, )buttons
ª, ·buttons
p(stop) button
P(pause) button
5678
1!¡
!™!¶ !§@º !ª !•@¡ !¢!∞@™@£ !£
This section is extracted from
instruction manual.

– 5 –
Note : Follow the disassembly procedure in the numerical order given.
1
2
Disc table
Loading panel
Chassis
Front panel assy
6 Wire (Flat type) (7 core) to Main board (CN806)
7 Wire (Flat type) (23 core) to Main board (CN805)
8 Wire (Flat type) (7 core) to Main board (CN801)
9 Wire (Flat type) (9 core) to Main board (CN804)
5 Screw (+BV TP 3 x 6)
5 Three Screws (+BV TP 3 x 6)
4
3
Chassi
s
CD Mechanism
1 Four Screws (+BV TP 3 x 6)
2 SN802 (6P)
3
3-1. FRONT PANEL REMOVAL
3-2. CD MECHANISM REMOVAL
SECTION 3
DISASSEMBLY

– 6 –
Mechanism deck
3 Two Screws (+BV TP 2.6 x 8)
4
1 Press § button
2
3 Two Screws (+BV TP 2.6 x 8
)
Front panel assy
Casstte lid assy
3-3. MECHANISM DECK REMOVAL

– 7 –
SECTION 4
ADJUSTMENTS
4-1. MECHANICAL ADJUSTMENTS
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened
swab :
record/playback head pinch roller
erase head rubber belts
capstan
2. Demagnetize the record/playback head with a head demagne-
tizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
5. The adjustments should be performed with the rated power sup-
ply voltage unless otherwise noted.
rTorque Measurement
Mode Torque Meter Meter Reading
Forward CQ-102C 30 to 65 g•cm
(0.42 – 0.9 oz•inch)
Forward CQ-102C 1 to 7 g•cm
Back Tension (0.0134– 0.097 oz•inch)
Reverse CQ-102RC 30 to 65 g•cm
(0.41 – 0.9 oz•inch)
Reverse CQ-102RC 1 to 7 g•cm
Back Tension (0.0134– 0.097 oz•inch)
FF, REW CQ-201B 70 to 120 g•cm
(0.972– 1.66 oz•inch)
4-2. ELECTRICAL ADJUSTMENTS
1. The adjustment should be performed in the publication.
(Be sure to make playback adjustment at first.)
2. The adjustment and measurement should be performed for
both L-CH and R-CH.
rSwitch position
DOLBY NR switch : OFF
DIR MODE switch :A
rStandard record position :
Deliver the standard input signal level to input jack and set
the REC LEVEL control to obtain the standard output signal
level as follows.
Record Mode
set
TAPE OUT
+
–
TAPE IN
AF OSC
attenuator
600 Ω
10 k Ω
47 k Ω
level meter
rStandard Input Level
InputTerminal TAPE IN
source impedance 10kΩ
input signal level 0.5V (–3.8dB)
rStandard Output Level
OutputTerminal TAPE OUT
load impedance 47kΩ
output signal level 0.5V (–3.8dB)
rTest tape
Tape Contents Use
P-4-A100 10 kHz, –10dB Azimuth Adjustment
P-4-L300 315Hz, 0dB PB Level Adjustment
WS-48B 3kHz, 0dB Tape Speed Adjustment
0dB=0.775V
TCTest Mode
setting : Push POWER button with STOP key and REC MUTE
key.
function : rwhen start recording, COUNTER is set to “0000”
and COUNTER MEMORY function is effective
(“MEMORY” appears on FLD).
rWhile playing or AMS, the signal level is displayed.
(“L” / “H”)
rTest tape
Tape Contents Use
P-4-A100 10 kHz, –10dB Head Azimuth Adjustment
P-4-L300 315Hz, 0dB Level Adjustment
WS-48B 3kHz, 0dB Tape Speed Adjustment
0dB=0.775V
Record/Playback Head Azimuth Adjustment
rCarrey out servicing or repairs form the REVERSE direction
first.
Procedure :
1. Mode : Forward playback
set
level mete
r
+
–
test tape
P-4A100
(10kHz, –10dB) 47 k
Ω
TAPE OUT
2. Turn the adjustment screw for the maximum output levels. If
these levels do not match, turn the adjustment screw until both
of output levels match together within 1dB.
L-CH
peak R-CH
peak
L-CH
peak
R-CH
peak
Screw
position
output
level within
1 dB within
1 dB
screw angl
e

– 8 –
SampleValue of Wow and flutter
W. RMS (JIS) within 0.3%
(test tape : WS-48B)
Playback Level Adjustment
Procedure :
Mode : Playback
set
level mete
r
+
–
test tape
P-4-L300
(315Hz, 0dB) 47 k
Ω
TAPE OUT
Adjust RV11 (L-CH) and RV21 (R-CH) so the level meter reading
becomes the adjustment limits below.
Adjustment Level :
TAPE OUT level : – 7.7± 0.5dB (0.301 to 0.338V)
Level Difference between Channels : within 0.5dB
Confirm the TAPE OUT level does not change in playback mode
while changing the mode from playback to stop several times.
Adjustment Location : AUDIO board.
(see page 9)
Record Bias Adjustment
Procedure :
1. Mode : Record
set
AF OSC
attenuator
blank tape
CS-123
600 Ω
10 k Ω
1) 315Hz
2) 10kHz 72.3mV (–20.6dB)
TAPE IN
2. Mode : Playback
set
level mete
r
+
–
recorded
portion 47 k
Ω
TAPE OUT
3. Confirm playback the signal recorded in step 1 become adjust-
ment level as follows.
4. If these levels do not adjustment level, adjust the RV12
(L-CH) and RV22 (R-CH) to repeat step 1 and 4.
Adjustment level : Playback output of 315Hz to playback output
of 10kHz : ±0.5dB.
Adjustment Location : AUDIO board.
3. Playback Mode
VH
in phase 45 ° 90 ° 135 ° 180 °
good wrong
set
L-CH
R-CH
screen pattern
test tape
P-4A100
(10kHz, –10dB) Osilloscope
TAPE OUT
47 k Ω
47 k Ω
4. Change the reverse playback mode and repeat the steps 1 to 3.
5. After the adjustment, lock the adjustment screw with suitable
locking compound.
Adjustment Location :
– record/playback head –
forward side
adjustment screws
revers side
Tape Speed Adjustment
Procedure :
Mode : Playback
+
–
set
frequency counter
test tape
WS-48B
(3kHz, 0dB)
47 k Ω
TAPE OUT
1. Set to forward playback mode.
2. Adjust RV71 so that frequency reading becomes 3,000± 90Hz.
Frequency difference between the beginning and the end of the tape
should be within ± 3%.
Adjustment Location : AUDIO board.
(see page 9)

– 9 –
Record Level Adjustment
Procedure :
1. Mode : Record
set
AF OSC
attenuator
blank tape
CS-123
600 Ω
10 k Ω
315Hz 72.3mV (–20.6dB)
TAPE IN
2. Mode : Playback
set
level mete
r
+
–
recorded
portion 47 k
Ω
TAPE OUT
3. Confirm playback the signal recorded in step 1 become adjust-
ment level as follows.
4. If these levels do not adjustment level, adjust the RV111
(L-CH) and RV211 (R-CH) to repeat step 1 and 4.
Adjustment Level :
TAPE OUT level : – 26± 0.5dB (36.7 to 41.1mV)
Adjustment Location : MAIN board.
[AUDIO BOARD] (Conductor side)
Record Bias
(R) (L)
RV22 RV12
RV71 (NORMAL) Tape speed
RV21(R)
RV11(L) Playback Level
[MAIN BOARD]
(Component side)
RV111 : Record level
(
L-CH
)
RV211 : Record level (R-CH)
CD SECTION
Note :
1. CD Block basically constructed to operate without adjustment.
Therefore, check each item in order given.
2. UseYEDS-18 disc (3-702-101-01) unless otherwise indicated.
3. Use the oscilloscope with more than 10MΩimpedance.
4. Clean an object lensby anapplicator withneutraldetergent when
the signal level is low than specified value with the following
checks.
S-Curve Check
+
–
BD board
TP (FE)
TP (VC)
oscilloscope
Procedure :
1. Connect oscilloscope to test point TP(FE) and BD board.
2. Connect between test point TP (FEI) and TP (VC) by lead wire.
3. Turned Power switch on.
4. Put disc (YEDS-18) in and turned Power switch on again and
actuate the focus search. (Actuate the focus search when disc
table is moving in and out.)
5. Check the oscilloscope waveform (S-curve) is symmetrical be-
tween A and B. And confirm peak to peak level within
3 ±1Vp-p.
A
B
within 3
± 1Vp-p
symmetry
6. After check, remove the lead wire connected in step 2.
Note : rTry to measure several times to make sure that the ratio of
A : B or B : A is more than 10 : 7.
rTakesweep time as longas possible and light up thebright-
ness to obtain best waveform.
RF Level Check
+
–
BD board
TP (RF)
TP (VC)
oscilloscope
Procedure :
1. Connect oscilloscope to test point TP (RF) on BD board.
2. Turned Power switch on.
3. Put disc (YEDS-18) in and playback.
4. Confirm that oscilloscope waveform is clear and check RF sig-
nal level is correct or not.
Note :
Clear RF signal waveform means that the shape “
◊
” can be
clearly distinguished at the center of the waveform.
level : 1.2 Vp-p
+0.25
–0.20
VOLT/DIV : 200mV
TIME/DIV : 500nS
RF signal waveform

– 10 –
E-F Balance (1Track Jump) Check
+
–
BD board
TP (TE)
TP (VC)
oscilloscope
(DC range)
Procedure :
1. Connect oscilloscope to test point TP(TE) on BD board.
2. Turned Power switch on.
3. Put disc (YEDS-18) in to play the number five track.
4. Press the “P(Pause)” button. (Becomes the 1 track jump mode)
5. Check the level B of the oscilloscope’s waveform and theA (DC
voltage) of the center of the Traverse waveform.
Confirm the following :
A/B x 100 = less than ±22%
0V
Center of the waveform
A (DC voltage)
level : 1.3
± 0.6 Vp-p
1 track jump waveform
symmetry
B
RF PLL Free-run Frequency Check
Procedure :
1. Connect frequency counter to test point (PLCK) with lead wire.
+
–
frequency counter
BD board
TP (PLCK)
2. Turned Power switch on.
3. Put disc (YEDS-18) in to play the number five track.
Confirm that reading on frequency counter is 4.3218MHz.
Adjustment Location :
1510
11 15 20
151014
2825
20
15
[BD BOARD] (Side B)
TE FE RF
VC
PLCK TEI