Sony TC-WR701ESL User manual

TC-WR/O1ES/WR735S
SERVICE MANUAL
This photo is TC-WR701ES.
US Model
TC-WR7O1ES
Canadian Model
AEP Model
Australian Model
TC-WR735S
MERE Cagserie
Model Name Using Similar Mechanism | TC-WR690/WR790
TCM-190RB11C
DECK B) TCM-190RB11C
Tape Transport Mechanism Type
SPECIFICATIONS
4-track 2-channel stereo
Fast winding time Approx. 90 sec. (with Sony C-60 cassette)
Bias AC bias
Signal-to-noise ratio (at peak level and weighted)
Recording system
Cassette
(Dolby NR off)
S/N ratio improvement (approximate values)
with Dolby B NR on: 5 dB at 1 kHz; 10 dB at 5 kHz
with Dolby C NR on: 15 dB at 500 Hz; 20 dB at 1 kHz
with Dolby S NR on: 10 dB at 100 Hz; 24 dB at 1 kHz
0.4% (with Type I, 160 nWb/m, 315 Hz,
3rd H.D.)
1.8% (with Type IV, 250 nWb/m, 315 Hz,
3rd H.D.)
Frequency response (Dolby NR off)
Harmonic distortion
30 - 19,000 Hz (+3 dB, IEC)
30 - 13,000 Hz {+3 dB (-4 dB) recording]
Type li cassette 30 - 18,000 Hz (+3 dB,IEC)
[Type leassette | He (49 6B.IEC)
30 - 16,000 Hz (+3 dB,IEC
Type IV : Sony METAL-S
Type Il : Sony UX-S
Typel : Sony HF-S
Wow and flutter + 0.13% W.Peak (IEC)
0.07% W.RMS (NAB)
+ 0.18% W.Peak (DIN)
Inputs .
Line inputs Sensitivity 0.16 V
(phono jacks)
Input impedance 47 k ohms
Outputs
Line outputs
(phono jacks)
Rated output level 0.5 V at a load impedance
of 47 k ohms
Load impedance Over 10 k ohms
Output level 1 mW at a load impedance
of 32 ohms
120 V AC, 60 Hz (US, Canadian model)
220—230 V AC, 50/60 Hz (AEP, German
model)
240 V AC, 50/60 Hz (Australian model)
33 W
Headphones
(stereo phone jack)
General
Power requirements
Power consumption
Dimensions
Approx.
430X135
X295
mm
(w/h/d)
(17
X5%/,X115/.
inches)
including
project-
ing
parts
and
controls
Mass Approx. 4.8 kg (10 Ibs 10 oz)
Supplied accessories
Audio connecting cords (2)
Design and specifications are subject to change without notice.
STEREO CASSETTE DECK
SONY.

For higher quality recording/playback
* The Dolby HX PRO* system which improves the linearity of the
tape’s high-range response during recording. —
- B, C and S type Dolby NR* systems which reduce tape noise.
« Automatic calibration on each deck which ensures optimum
recording conditions to bring out the best in every tape.
For your convenience
+ Automatic tape type detection during playback and recording.
* The Multi-AMS and Memory Play functions which provide easy
access to a desired selection.
« A relay function for long recording and playback.
« Auto play function which automatically starts playback after tape
rewinding to start.
¢ Synchronized dubbing at normal or high speed.
- Simultaneous Recording function for the simultaneous recording
of the same source to cassettes in both decks.
For easier operation
* Twin easy-to-read linear counters which show the elapsed
recording or playing time on each deck.
« An optional remote commander which allows the remote. control
of various operations.
* Dolby noise reduction and HX Pro headroom extension
manufactured under license from Dolby Laboratories Licensing
Corporation. HX Pro originated by Bang & Olufsen.
“DOLBY”, the double-D symbo! DO and “HX PRO” are trademarks
of Dolby Laboratories Licensing Corporation.
MODEL IDENTIFICATION
(Specification Label)
TC-WR701ES
TC-WR735S
SONY move 10. (2777
STEREO CASSETTE DECK
UMMM
US, Canadian model: AC 120V 60Hz 33W
AEP, German model: AC 220-—-230V~50/60Hz 33W
Australian model : AC 240V~50/60Hz
SAFETY CHECK-OUT (US Model)
After correcting the original service problem,
perform the following safety check before releasing
the set to the customer:
Check the antenna terminals, metal trim, ‘“‘metallized”
knobs, screws, and all other exposed metal parts for
AC leakage. Check leakage as described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to
earth ground and from all exposed metal parts to any
exposed metal part having a return to chassis, must
not exceed 0.5mA (500 microampers). Leakage
current can be measured by any one of three
methods.
1. A commercial leakage tester, such as the
Simpson 229 or RCA WT-540A. Follow the
manufacturers’ instructions to use these instru-
ments.
to
A battery-operated AC milliammeter. The Data
Precision 245 digital multimeter is suitable for
this job.
3. Measuring the voltage drop across a resistor by
means of a VOM or battery-operated AC volt-
meter. The ‘“‘limit” indication is 0.75 V, so
analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa
SH-63Trd are examples of a passive VOM that
is suitable. Nearly all battery operated digital
multimeters that have a 2V AC range are
suitable. (See Fig. A)
To Exposed Metal
Parts on Set
AC
voltmeter
(0.75 V)
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.

TABLE OF CONTENTS
Section Title Page
1
. GENERAL
T-t, Identify ime: the: Parts s:% eroeu iia uted ase tae eses aes
2:
2.
2.
2-
2.
2-
9.
3.
4.
5:
5.
5.
oO
5.
5-
5-
6.
6-
6-
6-
6-
7.
DISASSEMBLY
1. Cassette Lid Assy sevics Leva ccc nuh oases eceadeeeae os
2 Bronte r Anel Assy sista kein is hewiee eS ers ke te od
5, Mechanism Deck <s42 ose seas cd jeepers en
4. Capstan Motor, Reel Motor (1) .................006,
5. Capsten Motor, Reel Motor (2) ........-.0. cece eeee
6. Head, Pinch Roller ................5. sal Se ne
MECHANICAL ADJUSTMENTS..................-
ELECTRICAL ADJUSTMENTS .............-..-..
DIAGRAMS
I Circiit Beards LOcanon: 2:22 ssecvesieesSiiees Gas
2. Printed Wiring Boards—Main Section— ............
3. Schematic Diagram—Main Section— ..............
4. Schematic Diagram—Panel Section— ..............
5. Printed Wiring Boards—Panel Section—............
6. Semiconductor Lead Layouts .........-..-...00e0e
EXPLODED VIEWS
Ie Cabinet Section: io isa< bistebadrae ele ts Geese wes
2. Front Panel: Section: 42254404 Gee iver ss Gi5024 ois
3: Méchanisin Section (1). 4 i acasacdnwa'e owas eee
4. Mechanism Section (2) .........-. 22 eee eee eens
ELECTRICAL PARTS LIST ...............-..-.--
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK A OR DOTTED
LINE WITH MARK A ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH.
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
A LA SECURITE!
LES COMPOSANTS IDENTIFIES PAR UNE MARQUE /\
SUR LES DIAGRAMMES SCHEMATIQUES ET LA LISTE
DES PIECES SONT CRITIQUES POUR LA SECURITE
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS QUE PAR DES PIECES SONY DONT LES
NUMEROS SONT DONNES DANS CE MANUEL OU
DANS LES SUPPLEMENTS PUBLIES PAR SONY.

SECTION 1
GENERAL
This section is extracted a
instruction manual.
Front Panel
For details, refer to the page number(s)
indicated in parentheses.
{1] POWER switch
(2] Deck A
[3] & (eject) button (deck A)
(4] MPX (multiplex) FILTER ON/OFF switch
(36)
[5] COUNTER buttons (deck A) (30)
RESET button
MEMORY button
[6] AUTO CAL (calibration) buttons (DECK
A, DECK B) (48,50)
Display panel
[8] DOLBY NR (Dolby noise reduction)
switch (18,22,32,42,44)
[9] BALANCE control (32)
REC (recording) LEVEL control (32,36)
11] COUNTER buttons (deck B) (30)
RESET button
MEMORY button
* Remote control sensor
You can remotely control this cassette
deck with:
— A remote commander that came with
a Sony amplifier or receiver if it has
the li mark and cassette deck contro!
capability.
— Any optional Sony remote commander
with the fil mark and cassette deck
control capability.
Deck B
[13] Tape operation buttons
lM (stop) button
<4 (jeftward fast winding) (Multi-AMS**)
button
~@ (reverse play) button
> (forward play) button
bP (rightward fast winding) (Multi-
AMS"*) button
If PAUSE button.
O REC MUTE (record muting) button
(46)
@ REC (recording) button
(eject) button (deck B)
[15] SYNCHRO DUBBING buttons (52)
HIGH speed button
NORMAL speed button
A+B REC (simultaneous recording)
button (42)
HEADPHONES jack (stereo phone jack)
DIR (direction) MODE switch
(18,22,32,42,44,52)
** AMS is an abbreviation for Automatic
Music Sensor.

SECTION 2
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
2-1. CASSETTE LID ASSY
@ Push the EJECT button.
2-2. FRONT PANEL ASSY
@ Remove the connectors.

2-3. MECHANISM DECK
@ BVTT2.6x8
mechanism deck
2-4. CAPSTAN MOTOR, REEL MOTOR (1)
@ PTPWH2 X23
© When installing, pull the FR belt
and put arround claws.
O When installing, pull the capstan belt
and put arround claws.

2-5. CAPSTAN MOTOR, REEL MOTOR (2)
@ connector
@ connectors
@ B2.6x3
© MD HX board
@ reel motor
belt (FR)
@ claws
2-6. HEAD, PINCH ROLLER
@ torsion spring
@ lever (pinch lever FWD) assy
@ lever (pinch lever REV) assy

SECTION 3
MECHANICAL ADJUSTMENTS
PRECAUTION
Clean the following parts. with a denatured alcohol-
moistened swab:
record/playback/erase head pinch roller
rubber belts idlers
capstan
Demagnetize the record/playback head with a head
demagnetizer.
(Head demagnetizer do not approach for the erase head.)
Do not use a magnetized screwdriver for the adjustment.
After the adjustments, apply suitable locking compound
to the parts adjusted.
The adjustments should be perfomed with the rated
power supply voltage unless otherwise noted.
Torque Measurement
Torque Torque meter Meter reading
CQ-102C ' 30 to 65g¢cm
Forward
(0.42
to
0.90
oz*inch)
1 to 6g*cm
(0.014 to 0.08 oz*inch)
30 to 65g*cm
(0.42 to 0.90 oz*inch)
1 to 6g*cm
(0.014 to 0.08 oz*inch)
70 to 120g*cm
(0.98 to 1.67 oz*inch)
Forward
CQ-102C
back tension Q
CQ-102RC
Reverse
Reverse
CQ-102R
back tension Q c
Forward,
Reverse ae
SECTION 4
ELECTRICAL ADJUSTMENTS
PRECAUTION
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.
@ Switch position
DOLBY NR switch : OFF
DIR MODE switch :2
e@ Standard 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—
AF OSC
Standard Input Level
Input terminal LINE IN
10kQ
0.25V (—10dB)
source impedance
input signal level
Standard Output Level
Output terminal
LINE OUT
47kO, load impedance
output signal level 0.44V (—5dB)
Test Tape
[Tope | Gontents—«CSOCtCite id
P-4-A100 10kHz, —10dB Azimuth Adjustment
P-4-L300 315Hz, 0dB Level Adjustment
WS-48B 3kHz, 0dB
Tape Speed Adjustment

Record/Playback Head Azimuth Adjustment
Procedure :
1. Reverse Playback Mode
test tape
P-4-A100
(10kHz, —10dB)
LINE OUT
2. Turn the adjustment screw for the maximum output
levels. If these levels do notmatch, turn the adjustment
screw until both of output levels match together within
within 1dB
R-CH
screw peas
position
L-CH RCH. == “Screw.
peak peak angle
3. Playback Mode
test tape
P-4-A100
(10kHz, —10dB) 47kQ oscilloscope
135° 180°
Nerve”
good wrong
a
4. Change the forward playback mode and repeat the steps
Oia
5. After the adjustment, lock the adjustment screws with
suitable locking compound.
Adjustment Location : —record/playback head—
|
)_° _@|
forward side reverse side
adjustment screws
Tape Speed Adjustment
Perform high speed adjustment before normal speed adjust-
ment.
Procedure :
—Forward Playback Mode—
test tape
WS-48B
(3kHz,
OdB)
frequency
counter
LINE OUT
(high speed adjustment)
1. Short the connector TP1 (pins @ and @). (test mode)
2. Keep on pressing the SYNCHRO DUBBING HIGH swit-
ch.
3. Adjust each RV72 so that the frequency counter reading
becomes within adjustment limits of 6,000+20Hz on both
of deck A and deck B.
4. Change the reverse playback mode and repeat the steps
2 and 3.
(normal speed adjustment)
5. After adjustment, open the connector TP1.
6. Keep on pressing the SYNCHRO DUBBING NORM
switch.
7. Adjust each RV71 so that the frequency counter reading
becomes within adjustment limits of 3,000+10Hz on both
of deck A and deck B.
8. Change the reverse playback mode and repeat the steps
6 and 7.
Frequency difference between the beginning and the end of
the tape should be within 3%.
Frequency difference between deck A and deck B the begin-
ning of the tape should be within 1.5%.
Adjustment Location: MD HX board

Playback Level Adjustment
Procedure :
—Forward Playback Mode—
test tape
P-4-L300
VTV
(315kHz, OdB) .
LINE OUT
Adjust each RV11 (L-CH) and RV21 (R-CH) so that the
VTVM reading becomes within adjustment limits below on
both of deck A and deck B.
Adjustment Limits :
LINE OUT level: —7.7+0.5dB (0.301 to 0.338V)
Level difference between channels: within 0.5dB
Confirm the LINE OUT level does not change in playback
mode while changing the mode from playback to stop several
times.
Adjustment Location : MD HX board
Bias Consumption Current Adjustment
This adjustment should be performed when replacing the
head assy or the bias oscillating transformer (T81, T91).
Procedure : digital
blank
tape
voltmeter
LINE IN CS-413
no signal
set ea
1. Connect the digital voltmeter to test point TP81.
2. Set RV81 (L-CH) and RV91 (R-CH) to mechanical center.
3. Set to forward record mode.
4. Adjust T81 (L-CH) and T91 (R-CH) so that the digital
voltmeter reading becomes minimum.
Adjustment Location : MD HX board
Record Bias Adjustment
Setting :
REC LEVEL control: standard record position (Refer to
page 8.)
Procedure:
1. Record Mode
AF OSC
blank tape
€) iene CS-123
Lary |
Eaic)
LINE IN
1) 315Hz _
5 ete 38.8mV (—26.0dB)
2. Playback Mode
recorded VTVM
portion
LINE OUT
3. Playback the signal recorded in step 1, and confirm that
the 10kHz playback output level is VITVM reading
becomes within adjustment limits below relative to the
315Hz output.
4. If the adjustment limits are not satisfied, adjust each
RV81 (L-CH) and RV91 (R-CH) so that the VT VM read-
ing becomes within adjustment limits below.
Adjustment Limits:
10kHz playback output
relative to the 315Hz output: 0+0.5dB
(0.732 to 0.821V)
Adjustment Location : MD HX board

Record
Level
Adjustment
|
DECK
A|
|
DECK
B
Adjustment
Location
:
Setting
:
{MD
HX
BOARD]
REC
LEVEL
control:
standard
record
position
(Refer
to
(CONDUCTOR
SIDE)
page
8)
EES
TTT
TTI
IEG
;
RV91
RVBI
Procedure
:
(R-CH)
(L-CH)
ey
1. Record Mode
Record Blas
AF OSC blank tape Adjustment
CS-123 RV72
C) Tape Speed |(HiGH) "CD
O Adjustment | av71
ee | (NORMAL )
Oo—-—O
—
ey)
oo
LINE
IN
te.
eas
Blas
Consumption
|
(L~-CH)
fol
315Hz,
38.8mV
(—26.0dB)
Eicon
aalue
tact
-
18
2.
Playback
Mode
RCH)
——*C)
coe
recorded
RV21
oe
VTVM
Playback
Levet
|
(R-
eee
Adjustment
|
ayy
(Le
sca
LINE OUT
[ MAIN BOARD J
(Deck A) (COMPONENT SIDE)
3. Playback the signal recorded in step 1, and confirm that
the playback output level is VTVM reading becomes
within adjustment limits below.
4. If the adjustment limits are not satisfied, adjust each
RV181 (L-CH) and RV281 (R-CH) so that the VTVM
reading becomes within adjustment limits below.
(Deck B)
5. Similarly, playback the signal recorded in step 1, and
confirm that the playback output level is VI'VM reading
becomes within adjustment limits below.
6. If the adjustment limits are not satisfied, adjust each
RV171 (L-CH) and RV271 (R-CH) so that the VTVM
reading
becomes
within
adjustment
limits
below.
[
MAIN
BOARD
|
(COMPONENT SIDE)
Adjustment
Limits
=
315Hz
playback
output
level:
—26.0+0.5dB
(36.7
to
41.1mV)
1C504
Adjustment Location : main board
| es09 ¢ Aaa
Record
av CH Level
|) @—aer Adjustment
(R-CH)) (Deck B)
RV18) RV281
(L- (L=CH) (R-CH), (R-CH)
geeaea,?
Level
Adjustment
(Deck A)
—1 1 poner

SECTION 5
DIAGRAMS
5-1. CIRCUIT BOARDS LOCATION
TRANSFORMER board
MD
HX
board
CONNECTOR
board
(DECK A)
SW-A board
ECK B
SW-A
board
(DEC
)
(DECK A) MAIN board
POWER
SW
board
DOLBY
(S)
board
PANEL board
MD HX board
SW (B) board (DECK B)

TC-WR701ES/WR735S
e
Semiconductor
Location
5-2.
PRINTED
WIRING
BOARDS
—MAIN
SECTION—_
eRefer
to
Page
27
for
Semiconductor
Lead
Layouts.
[ef.
No,
[
Location
|
Ref.
No,
|
Location
2
3
4
5
7
10
2
8
23
24
26
D31
C-2
oe
B-3
D121
Q5
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fine]
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MECHANISM
DECK
BLOCK(A)
:
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D505
Q121
|
[MD
HX
BoaRo}
|
|
ss
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Q122
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mover
|
|
AEP,
GERMAN
,
AUSTRALIAN
|
D553
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Weec
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D554
Q221
|
|
[
TRANSFORMER
BOARD)
D561
Q222
B
|
i
1
D562
Q241
|
:
|
D601
Q501
|
l
|
|
D611
Q504
|
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cansrat
woroR
!
|
|
D702
Q505
r
RECORIIEL
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EHASE
r
D703
0506
|
|
|
|
D704
Q507
Chi
al
7
|
|
|
D705
Q521
|
(8
!
|
|
D706
Q522
|
D707
Q523
l
|
D708
Q524
|
|
;
|
D709
Q525
|
!
|
D710
Q526
|
|
|
D711
Q541
|
|
!
|
D712
0561
,
|
8
D713
0562
,
|
|
|
D714
Q563
l
D715
Q564
|
fi
|
D716
Q570
|
|
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|
D717
Q571
:
|
|
D801
Q601
|
Gat
|
BLU
Q603
|
=
|
|
C31
Q604
|
l
:
|
C81
Q605
|
|
|
:
|
|
(IC81)
Q611
|
eee
ms
IC82
Q612
|
A
|
(C251
9614
,
pow
8
208n0)
weTaL
DET
HALE
GET
7Oy
DET
|
e--
|
|
DOLBY($)
BOARD
|
-
IC501
Q615
|
l
ch
|
|
IC502
Q621
1C503
0631
|
|
|
!
IC504
Q651
|
|
|
|
IC505
Q652
|
|
IC506
Q653
|
|
%
!
1C507
Q702
|
|
2
PANEL
BOARD
|
1C508
Q703
|
|
|
!
IC509
Q704
|
|
|
|
IC511
Q705
bee
eee
ee
ee
eH
+————-
peg
|
|
IC702
Q706
|
|
iC801
Q707
r
Sy
a
ee
a
ee
eS
|
IC802
Q708
Y
|
l
l
|
IC803
ojos.
eos,
fe
FHS
BOARD]
|
|
|
IC804
Q801
:
|
Neat
me
CNP
|
IC805
Q804
|
i
|
|
IC811
Q805
|
MECHANISM
DECK
BLOCK
IS
FOR
COMMON
|
|
Q806
|
DECK
A
AND
B,
ONE
SIDE
OMITTED.
eee
!
!
Q51
Q807
ae
ene
|
|
|
(_):
SW-A
BOARD
:
|
MECHANISM
DECK
BLOCK
(8)
|
|
Me
ees
oe
aie
|
Note:
:
@
o—-:
parts
extracted
from
the
component
side.
|
|
C)
Bs:
parts
mounted
on
the
conductor
side.
[12]
|
e
@
=:
Through
hole.
04
|
|
e
:
Pattern
on
the
side
which
is
seen.
J502
1
Ghee
eat
enciaa
aataaean
|
@
:
Pattern
of
the
rear
side.
K
+6
|
as
PANEL
BOARD
LUS
,
CANADIAN
MODEL
oe
a
aes
CNP902
—13— | —14— | —15— , —16—

TC-WR701ES/WR735S
5-3. SCHEMATIC DIAGRAM —MAIN SECTION—- e¢Refer to Page 28 for IC Block Diagrams.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
1C8Oe
act
Q507
ool
Oh,
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a
a
er
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a
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coe
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CONTROL
ace
eae
HOLBY
“SC
EREUWL
‘SEG, BRD
L_ MODE SELECT
+
DOLBY ON/OFF 9507
= SWITCH 2SA1345-TP
BOL. ON/OFF (1332)
060) I SAT CA a ees ara CP)
i
5.
Note:
e
All
capacitors
are
in
pF
unless
otherwise
noted.
pF:
uur
S5OWV
or
less
are
not
indicated
except
for
electrolytics
and
tantalums.
1c8
+ POWER 0
Seee swine a
: (a
; fol)
@)
11
PST&00E-T
5
C210
RESET
KS
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O A 3 2 Sah
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internal
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——< AMS. SIG>-—_________—__
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The components identi- | Les composants identifiés par
fied by mark or dot- | une marque sont critiques
CXP82316-0190
-7.3 FL DRIVE
/SYSTEM CONTROL
7MECHANISM CONTROL 2.7
ted line with mark pour la sécurité.
are critical for safety. Ne les remplacer que par une
R803 2.7%
ee R257
,
ie,
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reese
!
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$73 & ge 2k Replace onty with part iéce portant le numéro spéci-
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oc
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leroy
so
CTS
(4)
iti
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PANEL BOARD 1 ie CAL ON/OFF ora a= 5 i
CNP S902 8 Pa 4 upx awore (2) ar f+} —f a no mark: PB
< PZ : S : .
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R10
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SWITCH
DOLBY
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:
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me © S1CS.1N G 5 E 5 : Sw2 fe ee ee & 2saseee-TP *
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Abbreviations
. x w .
za <REC. LEVEL > oe a ee . 1 CND: Canadian model
O} <RALANCE)— 3 Gs: German model
fem ee 2 AUS : Australian model
© POWER. IN; 2 CG Peat :
TO fb oF MPX. ON/OFF | t
PANEL BOARD @ b—Of- 47.5V weitere ;
a Ge lees swirc ra ie
LEVEL
CNA L}-+—+- $1CS. IN a (R} I
POWER. ]N>—————
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aes
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CH
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PG HALF ae SWITCH ee ea cam : ad 3 r 7
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TO | aS | T.REEL a BIAS.CAL &) >————4-—_+-— Basia yyy \
sw-a BonRD QM} LO} ce HEH | Ne ae nm dept a
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AUSTRALIAN
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{ 7.4 9604 ago | roy be! id j & I AC IN
2SA1345-1P — 25A1345- =a aes See Q522 ,523 = Q524 LINE. MUTE RECT
_— Se Sar en eee ee mete — AMS SWITCH ca 15¥ |
'B.BIAS fn OR34
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AU. GND A A - PB. SEL. AB 2 = LC ty us
DIR. B & re > Ly 5.5 r) 25A1345-TP MUT ING = F2 :
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B.REC.L
INVERTER
Bi
[|
Q525
2SA1345-1P
POWER.
OUT
-7.5V
REG.
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%NOT
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- 2A/125V
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eS A EE RE A RR a NN Ro TL6AL
—17—
—18—
—19—
—20—

TC-WR701ES/WR735S
Note:
All
capacitors
are
in
uF
unless
otherwise
noted.
pF:
uur
5OWV
or
less
are
not
indicated
except
for
electrolytics
and
tantalums.
All
resistors
are
in
&
and
/,W
or
less
unless
otherwise
specified.
% : indicates tolerance.
[1]: adjustment for repair.
Voltage
is
dc
with
respect
to
ground
under
no-signal
conditions.
no mark: PB
( ): REC
Voltages are taken with a VOM (Input impedance 10M).
Voltage variations may be noted due to normal produc-
tion tolerances.
Signal path.
>> :PB
yY»> : REC
5-4. SCHEMATIC DIAGRAM —PANEL SECTION—_ eRefer to Page 28 for IC Block Diagrams.
1 2 3 4 5 6 7 8 9
2.4sv A945 yazv BOYS i .isy POE o.sav R912 ov |
hedshy athe |
$910 $909 9 0
=
a
# olf ©
{PAUSE}
soi
4
SN
zn
wo
o
re)
=
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[DOLBY (S) BOARD)
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3
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a/2| 8 o
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oe) 3
~~ wo 2
8 = s 5 rsd Le ra a
ae 2 ry 3 6 as
"a 6 ° Cy bse So os
a Ts is l2| 8
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ay ary - mz
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C17
R34 LA Pie -4.0 100000a
2840.5% GHOSOOHOS :
1€2 (1/2) i C30 jo ge ede ees C1é
. 0.4% § 2% e282 =a R16 33 9.47825
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=
f=}
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@-
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-4,4)
25V ¥g3 342888 8 @ +
i SS (24) RIS, 2. 6k
R37 11k R36 30k) =R3S 30k (23) serial
0824
(ay-4.8 RI4 4.7K
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18900p 0 R13 1.2k C14 3300009
as RAO 30K (20) aD
MCIIN yec
cae CXAI417@ Nee
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CONT ROL
C35 1800p
x
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[B+ |
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RIG 1.3k 0.5%
C40 100000p
C13 1000009
C1 2200008
C3 0.0394
R5 S.1k 05%
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04
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> > 2 Mm
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+ i Q 2 = wW
Wom <<
Wo
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TO
MAIN BOARD
CPI51 /CP251
{ PANEL BOARD] VFO9OI FLUORESCENT INDICATOR TUBE
fi CJ Co apraye = <opraye _j
dB -@ -3@ -20 ~10 -4 od O +4
OK NMY HOWKR @D
on
Fit fey
LJ Ld BE (REC [A)CAL [B) [REC] Bi -AALA
& MD HX BOARD IS FOR COMMON DECK A ANDB ONE SIDE OMITTED.
(MD HX BOARD]
CNP71 az Q7I
4 +9 S-2 MOTOR SPEED
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(R-CH}
RS7
53
28016225 2-2
CS1 2200
C84
470p 6350V
R8t
10k
cay
100 630V
1c81 ¢
wPCIZ97CA
C89 226 16V
[yca_~-@<—_ fp {ET}
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R840 0
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CNP902
KEY2
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BALANCE .VOL
| POWER OUT | OUT
To :
MAIN BOARD es!
CN9O! NJLS1 4K-B
|
1¢82
| NJLSIGK-8
+7/SV
L CH (PB)
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R CH PB)
~7.5V
REEL +
REEL -
+5¥
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-7¥ MOTOR)
BIAS
L CH REC)
GNG
R_ CH (REC)
RELAY
+7.5V
HIRECTION
QUICK
~2.6V
TYPE
18
+7.5V -@
(DECK A}
19 20 21
TO
MAIN BOARD
CN902
4% SW-A BOARD IS FOR COMMON DECK A AND B ONE SIDE OMITTED,
{SW-A BOARD]
ERASE S85
PROOF (SIDE B)Y
$86
HALF DET
583
I
I
ice1 fice2|
SHUT OFF
DET
TO
MAIN BOARD
CN31B
(DECK B)
(CONNECTOR BOARD]
CN32A
+7.5V
tL CH ®B) Oo
eae YT aup 6nd J
eae oT rcniray J
opeey a
ene Tt ReeL+ J
eric oo
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a
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CN33A | DIRECTION J
ee >} th
4. CH (REC) O
GNO
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J
Apel op ee
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+7.5V z=
QiRECTION
QUICK
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TYPE
TO
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CN338
(DECK 8B)
fe
i
io {+t
x |
I~ Jo
mo |<
oo
22
TO
MAIN BOARD
CNBIA
(DECK A)
TO
MAIN BOARD
CN8IB
(DECK B})
TO
MAIN BOARD
CNSIA

5-5. PRINTED WIRING BOARDS —PANEL SECTION—
A a Ge i ee a
{SW(A) BOARD]
$931 $909 $915 $9ll $910 $916 $912 $913 $914
a <1 > oO ®
POWER SW
B BOARD
VFD901 FLUORESCENT INDICATOR TUBE
TO
C — ff Po eo aeprayve =—getave __j A m7 Al mi site SiGe
M
Ei
(LI.
LI
Ey
a
[REC]
[A]
CAL
[B]
[REC]
|
i)
oo.G
i
Ey
CPISI/CP251
dB -@ -30 -20 -10 -4 ba 6~O +4 +8
oe ee ea
R
[ee 8 8 fe Fe Fe oF 8 of 8 oF 8 GF Ue hh Ue Ue Ue Ue a UE UG Ug
Oe ee ee
D O=-NMTHOrD
START ( DECK 8 HED
$905 $901 $902 SYNCHRO
Ree C HIGH ) ——( NORMAL )———| DUBBING
AREC ‘ A+B
$925
DIR MODE
> CD ® RELAY itl
[SALANGE 3
$927 fens
MPX FILTER gOS
4 : s.. EG f 3
COUNTER || |. | 4} (COUNTER
(DECK A} é = as | (DECK B)
ld - 44 v56201
p
F\A/ORESCENT
ANDICATOR TUBE
{SW(B) BOARD]
So) \-647-801-D_
{[DOLBY(S) BOARD] (A SIDE)
e @ : Through hole.
: Pattern from the side which enable seeing.
(The other layers’ patterns are not indicated.)

5-6. SEMICONDUCTOR LEAD LAYOUTS
CXA1332M
TOP VIEW
CXA1417Q
CXA15990
M5218AP
(Top view)
NJL5165K-B (H1)
uPC1297CA 2SB1116A-L
2SD1387-3
J 9 ;
(Top view)
ECs
uPC4570G2
8765 2SD1622-S
1234
SF
C
{TOP
vIEW)
B
TC-WR701ES/WR735S
‘es
(ToP view) NJM4580E-D DTA114ES
CXA1578P uPC4558C DTA144ES HZS6A1L
HD14053BFP 2 DTC114ES HZS9A2L
MC14052BCP A A DTC143TS UZL-7H1
- M5283P 2$A1317-STU UZL-7L2
UP14053BC 2SC2603-EF aes
2S$D2144S-UVW
16 9
1 4
1 8 PST600E-T .
(TOP VIEW) anode
MA110
CXP82316-0190
DTC144ES
t
ANODE
CATHODE
(TOP
VIEW)
1N4148M
MC14052BF 10E2N
2SB1094-LK
nO 2SD1406-YGR oe
i 23 - vee {
3. GND
| | i SN74HCO4N
14 8 x ANODE
2SA1162-G
2SA1235-F
1 ré
oud _
TA7272P
(Top view)
MARKING SIDE VIEW
—27—

e iC Block Diagrams
1€511 M5283P
Vee
NC GNOt —_— ouTl Ver
ae
mies
Ocean
a
Ora
©
pars
@)-
-
wm @—foL es TH [ 6 Jfeowreo)
Le
(1)
: | +Vee
(8)
| ee
2
@—f>
D
|
L—@)-—G--O
=
=
0
NC
GNO2
—
OurT2
Ver
~Vee
Ic502 CXA1599Q
LINE OUT2 LINE MUTE
&) Line outs () LINE INI
cl
REC IN2
NR IN2
' PASS IN2
PB OUT2
VOL OUT2
GND (VG)
IREF
Vol. OUT!
PB OUT)
PASS INI
NR INI
REC IN}
HP voL ()
@)
N
-
a.
<<
BOOST}
REC OUT!
REC OUT2
GP CAL REC
CAL
BPB IN}
BPB IN2
APB INI HP OUT!
NR PASS
HP OUT2 (5)
B EQ
METAL
SPEEO
REC MUTE
AMS OUT
DVCC
DGND
vcc
VEE
PVEE
METER2
METER}

IC509 CXA1578P
rt
on
(9114
C151, 251, 507,508 MC14053BCP

NOTE:
@ The mechanical parts with no reference
number in the exploded views are not
supplied.
@ Items marked ”*” are not stocked since
they are seldom required for routine service.
Some delay should be anticipated
when ordering these items.
@ Abbreviations
G : German model
AUS : Australian model
6-1. CABINET SECTION
4B: TRANSFORMER board (US, Canadian
model)
A&C: TRANSFORMER board (AEP, G, AUS model)
AE: CONNECTOR board a
(US, Canadian l (AUS model)
model)
SECTION 6
EXPLODED VIEWS
e@ -XX and -X mean standardized parts, so
they may have some difference from the
original one.
@ Color Indication of Appearance Parts
Example :
KNOB, BALANCE (WHITE)... (RED)
t t
Parts Color Cabinet's Color
@ Hardware (# mark) list is given |
in the last of this parts list.
not supplied
The components identified by
mark A\ or dotted line with mark
A\ are critical for safety.
Replace only with part number
specified.
Les composants identifiés par une
marque /A\ sont critiques pour
la sécurité.
Ne les remplacer que par une piéce
portant le numéro spécifié.
Ref.
No.
Part
No.
Description
Remark
_
Ref.
No.
Part
No.
Description
qt
1
Remark
1
X-3366-515-1
LID
ASSY
(A),
CASSETTE
(WR701ES)
*
10
3-346-265-1141
HOLDER,
PC
BOARD
1
X-3366-517-1
LID
ASSY
(A),
CASSETTE
(WR735S)
li
1-575-730-11
WIRE,
FLAT
TYPE
(5
CORE)
2
X-3366-516-1
LID
ASSY
(B),
CASSETTE
(WR701ES)
12
{-590-217-11
WIRE,
FLAT
TYPE
(20
CORE)
2
X-3366-518-1
LID
ASSY
(B),
CASSETTE
(WR735S)
AM3
1-558-945-21
CORD,
POWER
(POLAR.
SPT-1)
*
3
4-929-294-42
CASE
(WR735S: Canadian,
WR701ES)
AN13 1-575-651-21 CORD, POWER (WR735S:AEP, G)
4 3-704-366-01 SCREW (CASE) (M3X8)
*
5
3-387-824-01
PANEL,
BACK
(WR701ES)
A13
1-696-845-11
CORD,
POWER
(WR735S:
AUS)
*
5
3-387-824-11
PANEL,
BACK
(WR735S:Canadian)
*
14
A-2006-954-A
DOLBY
(S)
BOARD,
COMPLETE
#4 3-387-824-21 PANEL, BACK (WR735S: AEP, G) 15 1-533-183-11 HOLDER, FUSE
* 5 3-387-824-31 PANEL, BACK (WR735S: AUS) A\F702 1-532-259-00 FUSE, TIME-LAG (T1. GAL) (WR735S: AEP, G,
AUS)
*
6
3-703-244-00
BUSHING
(2104),
CORD
(WR735S)
A\F703
1-532-259-00
FUSE,
TIME-LAG
(11.
6AL)
(WR735S:AEP,
G,
* 6 3-703-571-11 BUSHING (S) (4516), CORD (WR701ES) AUS)
* 7 4-949-235-01 HOOK (WR735S: Canadian, AEP, G, WR701ES)
*
8
A-2007-028-A
MAIN
BOARD,
COMPLETE
(WR735S:Canadian,
A\F704
1-532-743-11
FUSE,
GLASS
TUBE
(2A/125V)
WR701ES) (WR735S: Canadan, WR701ES)
*
8
A-2007-057-A
MAIN
BOARD,
COMPLETE
(WR735S:
AEP,
G,
AUS)
A\F705
—
1-532-743-11
FUSE,
GLASS
TUBE
(2A/125V)
(WR735S: Canadan, WR701ES)
9
4-943-148-32
FOOT
(F58175SW)
(WR735S:Canadian)
AXT701
—-1-450-869-11
TRANSFORMER,
POWER
(WR735S:
Canadian,
g
4-943-148-42
FOOT
(F58175SW)
(WR735S:
AEP,
G,
AUS,
WR701ES)
WR701ES)
A\T701 — 1-450-870-11 TRANSFORMER, POWER (WR735S: AEP, G, AUS)