Sony TC-WR545 Primary User manual

SERVICE MANUAL
Photo : TC-WR545
TC-WR45/WR741
US Model
Canadian Model
TC-WR545/WR74 1
AEP Model
UK Model
E Model
Australian Model
TC-WR545
Model Name Using Similar Mechanism | TC-WR535
Tape Transport Machanism
Type
DECK A} TCM-190RA12CL
TCM-WR545 : TCM-190RB12CL
DECK B
TCM-WR741 : TCM-190RB52C
SPECIFICATIONS
4-track 2-channel stereo
Approx. 90 sec. (with Sony C-60
cassette)
Bias | AC bias
Signal-to-noise ratio (at peak level and weighted)
Cassette Type IV Type Il Type I
(Dolby NR
OFF) 58 dB 57 dB 55 dB
S/N ratio improved (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
Recording system
Fast winding time
Harmonic distortion
0.4% (with Sony Type I, 160 nWb/m,
315 Hz, 3rd H.D.)
1.8% (with Sony Type IV, 250 nWb/m,
315 Hz, 3rd H.D.)
Frequency response (Dolby NR OFF)
Type IV Type I Type lI
cassette cassette cassette
30 - 18,000 Hz }30- 17,000 Hz | 30 - 15,000 Hz
(43 dB, TEC) {G@3dB,IEC) | (43 dB, IEC)
30 - 13,000 Hz
[+3 dB (-4 dB)
recording]
Type IV: Sony Type IV (METAL)
Type Il: Sony Type IJ (HIGH)
Typel: Sony Type I (NORMAL)
Wow and flutter +0.14% W.Peak (IEC)
0.08% W.RMS (NAB)
+0.19% W.Peak (DIN)
— Continued on page 2 —
Dolby noise reduction manufactured under license from
Dolby Laboratories Licensing Corporation.
“DOLBY” and the double-D symbol 90 are trademarks of
Dolby Laboratories Licensing Corporation.
STEREO CASSETTE DECK
SONY.

Inputs
(phono jacks) Input impedance 47 k ohms
Outputs
Line outputs
(phono jacks)
0.5 V ata load
impedance of
47 k ohms
Load impedance | Over 10 k ohms
Output level 1 mW at a load
impedance of
32 ohms
US, Canadian model : 120V AC, 60Hz
UK model : 240V AC, 50Hz
Australian model : 240V AC, 50/60Hz
AEP, German model :
220-230V AC, 50/60Hz
E model :
120, 220 or 240V AC adjustable,
50/60Hz
25W
EXCEPT UK, Australian model :
Approx. 430 x 123 x 290 mm
(w/h/d)
(17 x 47/s x 11 !/2 inches)
UK, Australian model :
Approx. 430 123x300 mm
(w/h/d)
(17X474x 117A inches)
including projecting parts and
controls
Approx. 4.5 kg (9 Ibs 15 0z)
Rated output
level
Headphones
(stereo phone jack)
(TC-WR545 only)
General
Power requirements
Power consumption
Dimensions
Mass
Supplied accessories
Audio connecting cords (2)
Design and specifications are subject to change without
notice.
MODEL IDENTIFICATION
(Specification Label)
SONY:
STEREO CASSETTE DECK
MODEL NO. Rss aaa
: AC 120V 60Hz
US, Canadian model
UK model : AC 240V 50Hz
Australian model! : AC 240V~50/60Hz
AEP, German model : AC 220-230V~50/60Hz
E model : AC120, 220, 240V~50/60Hz
TABLE OF CONTENTS
Section Title Page
Specifications :++seresesesereeeeteeteeeeteereeteese teeter eseeeseees l
Safety Check-out (US Model) SOrPereeeereeer re rere rere rere rr eee) 3
1. GENERAL
Identifying the Parts on the Front Panel s++r+t++trrrsrrtetttteee 4
2. DISASSEMBLY
2-1 . Front Panel errr rrr errr tree rere ee ee eee eee ee eee 5
2-2. Mechanism Deck eer rr rrr rer rr rrr rr errr rere rrr reer reece 5
2-3. Capstan Motor, Reel Motor ssrrrrtrrrtrrerritrsisesessee 6
2-4. Head, Pinch Rollers::sssressrereertseeeeeeeeeteeeneeeeneeeey 6
3. ADJUSTMENTS
3-1. Mechanical Adjustments :+rrrsttrrrrrereertrsereterseersersees ay
3-2. Electrical Adjustments «-++1+esseseereeeeeteeterteerierieees 7
4. EXPLANATION OF IC TERMINALS --+-e erste 11
5. DIAGRAMS
5-1. Block Diagram cece ener enon scree teen rset ne enereeseeenonsesecure 13
522) Circuit Board Location Sererrerrrrrr rrr errr errr e rrr 16
5-3. Printed Wiring Boards (System Control Section)-++++-- 17
5-4. Schematic Diagram (System Control Section):**+*+++*- 21
5-5. Schematic Diagram (Audio Section) srrrrsrrrrtrrtttrerees 27
5-6. Printed Wiring Boards (Audio Section):**++rstrtrrete"* ep
6. EXPLODED VIEWS
6-1. Chassis Section eee e cece tere nme eee e aren eee sereesenereneueeeenes 37
6-2. Front Panel Section Deemer meen e nse et tere an nsosscoesesaeeeseeee 39
6-3. Mechanism Section l deere ence recone eta a en eee nese e seen enee 40
6-4. Mechanism Section 2esrrcerersssseerteseeteeeeecesessenennes A]
7. ELECTRICAL PARTS LIST -sr--:ceecceceeceeeeseeeeeeeeeerees 42
TC-WR545, TC-WR741

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.
2. <A battery-operated AC milliammeter. The Data
Precision 245 digital multimeter is suitable for
this job.
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.
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
ialagee (0.75 V)
= Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
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
This
section
is
extracted
from
GENERAL
instruction
manual.
Identifying
the
Parts
on
the
Front
Panel
|
Remote control sensor*
3} 14) 15] 16) [7J18I19)
18) 17) 16) 15) [14
(The illustration shows the TC-WR545.)
For details, refer to the page number(s) indicated in
parentheses.
POWER switch Tape operation buttons
Deck A <4 (leftward fast-winding)/AMS***/RMS**— button
[3] COUNTER RESET button (deck A) PP (rightward fast-winding)/AMS***/RMS**+ button
RMS operation buttons (TC-WR545 only) Mi (stop) /(RMS**) CLEAR button
RMS/START button <] (reverse play) /(RMS**) BACK button
SET button [> (forward play) /(RMS**) FRONT button
CHECK button If PAUSE button (deck B only)
DISPLAY button O REC MUTE (record muting) button (deck B only)
Display panel @ REC (recording) button (deck B only)
[6] AUTO CAL button (TC-WR545 only) [14] MPX FILTER switch (TC-WR545 only)
COUNTER RESET button (deck B) DOLBY NR (Dolby noise reduction) switch
SYNCHRO DUBBING buttons DIR (direction) MODE switch
HIGH button PHONES jack (stereo phone jack) (TC-WR545 only)
NORMAL button & (eject) button (deck A)
[9] REC (recording) LEVEL control
Deck B * Remote control sensor
BALANCE control You can remotely control this cassette deck with:
(12) & (eject) button (deck B) — A remote commander that came with a Sony amplifier
or receiver if it has the f mark and cassette deck control
capability.
— Any optional Sony remote commander with the EJ mark
and cassette deck control capability.
** Random Music Sensor (TC-WR545 only)
“** Automatic Music Sensor
6

SECTION 2
DISASSEMBLY |
2-3. CAPSTAN MOTOR, REEL MOTOR
Note : Follow the disassembly procedure in the numerical order given.
@ +PTPWh2 x 23
CASE
Unscrew the four case attachment screws M3 X 8 and
remove the case.
2-1.
FRONT
PANEL
\
@
Fitting
base
E model only
FRONTPANEL @- ©
VOLTAGE SELECTOR When installing, pull the FR i)
capstan
belt
and
put
and
put
around
claws.
When installing, pull the |
around claws.
VOLTAGE
SELECTOR
@ Remove the flat cable.
© Remove the front Panel
@ claw @ Connectors
@ Capstan motor M1 (DECK A)
M3 (DECK B)
Ground plate
2-2, MECHANISM DECK @ MD(A)board (DECK A)
MD(C)board (DECK B)
@ Press the EJECT button.
@ Reel motor M2 (DECK A)
M4 (DECK B)
Remove the cassette holder
Belt (FR)
© +P2.6x28
2-4. HEAD, PINCH ROLLER
@ Cassette lid
3] Claw
© BVIP2.6x8
1) Claw
@ Head base assy
HP101(DECK A)
HRPE101(DECK B)
Mechanism deck
6 : @ BVTP2.6 x 8
@ Lever (pinch lever REV) assy @ Lever (pinch lever FWD) assy

SECTION 3
ADJUSTMENTS
3-1. MECHANICAL ADJUSTMENTS
PRECAUTION
1. Clean the following parts with a denatured alcohol-moistened
swab:
record/playback/erase head
rubber belts
idlers
2. Demagnetize the record/playback head with a head demagnetizer.
(Head demagnetizer do not approach for the erase head.)
3. Do not use a magnetized screwdriver for the adjustment.
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
5.The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
pinch roller
capstan
Torque Measurement
Meter reading
30 to 65g * cm
CQ-102C
(0.42
to
0.9
oz
*
inch)
Forward
DECK A: 1 to 6g * cm
(0.014 to 0.083 oz ¢ inch)
Forward
back
tension
Reverse
back
tension
FF/REW CQ-201B
3-2. ELECTRICAL ADJUSTMENTS
CQ-102C
DECK B : 2 to 9g * cm
(0.03 to 0.12 oz * inch)
30 to 65g * cm
(0.42 to 0.9 oz * inch)
1 to 6g *cm
SOneR (0.014 to 0.083 02 « inch)
70 to 120g*cm
(0.98 to 1.66 ozeinch)
PRECAUTION
1. The adjustment should be performed in the publication.
(Be sure to male playback adjustment at first.)
2. The adjustments and measurement should be performed for both
L-CH and R-CH.
@ Switch position
DOLBY NR switch : OFF
DIR MODE switch =
® 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
VTVM
Q attenuator 10k Q
ono oF
I] ooo |
[cee |
LINE OUT
LINE IN
Standard Input Level
source impedance
input signal level 0.5V ( — 3.8dB)
Standard Output Level
Output terminal LINE OUT
output signal level 0.5V ( — 3.8dB)
Test Tape .
|_Tape | Contents | Use
P-4-A 100 10kHz, — 10dB Azimuth Adjustment
P-4-L300 315Hz, 0dB PB Level Adjustment
WS-48B 3kHz, 0dB Tape Speed Adjustment
OdB=0.775V
Test Mode
1. Insert a short-circuit plug into TP801 (2P) and turn ON the
power switch. (Earth pin 9 of IC801 and turn ON the power
switch.)
At first, all the fluorescent tubes light up, then the system returns
to normal display. (However, “OOOO” is not displayed on the
counter. )
2. To release the test mode, remove the short plug and turn off the
power switch.
3. Remove the short plug after completion of adjustment.
Record/Playback Head Azimuth Adjustment
Procedure :
1. Forward playback Mode
test tape
P-4-A100
(10kHz, — 10dB)
VTVM
LINE 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
within
ix R-CH
peak
Screw
—
screw
position
position L-CH R-CH

3. Playback Mode
test tape
P-4-A100
(10kHz, — 10dB)
oscilloscope
nphase 45° rT j
good
4, Change the reveres playback mode and repeat the steps 1 to 3.
5. After the adjustment, lock the adjustment screws with suitable
locking compound.
Adjustment Location : — record/playback head —
reverse side forward side
adjustment screws
Tape Speed Adjustment
Procedure :
— Forward Playback Mode —
test tape
WS-48B
(3kHz, OaB)
LINE OUT
(high speed adjustment)
1. Connect @ pin of IC801 to ground.
2. Set to FWD playback mode.
3. Keep on pressing the HIGH SPEED DUBBING switch.
4. Adjust RV72 so that the frequency counter reading becomes
6,000 + 20Hz.
(normal speed adjustment)
1. Set to FWD playback mode.
2. Adjust RV71 so that the frequency counter reeding becomes
3,000 + 10Hz.
Frequency difference between the beginning and the end of the tape
should be within 3%.
Frequency difference between the deck A and deck B the beginning
of the tape should be within 1.5%.
Adjustment Location : AUDIO board
Playback Level Adjustment
Procedure :
— Forward Playback Mode —
test tape
P-4-L300
(315Hz, 0dB)
LINE OUT
Adjust RV11(L-CH) and RV21(R-CH) so the VITVM reading
becomes the adjustment limits below.
Adjustment Value :
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 : AUDIO board

Bias Consumption Current Adjustment (TC-WR545 only)
This adjustment should be performed when replacing the head assy
or the bias oscillating transformer (T81, T91).
Procedure :
():R-CH
a - digital
biank tape voltmeter
CS-413
| set a atl
LINE IN
ne signal
1..Connect the digital voltmeter to test point TP81.
2. Set RV81 (RV91) to mechanical center.
3. Set to FWD record mode.
4, Adjust T81 (T91) so that the digital voltmeter reading becomes
minimum. oe
Adjustment Value : Maximum 220mV
Adjustment Location : AUDIO board
Record Bias Adjustment
Setting :
REC LEVEL control : standard record position (Refer to page 7.)
Procedure :
1. Record Mode
AF OSC
blank tape
CS-123
foe | SI
} 38.8mV( — 260B)
LINE IN
1) 315Hz
2) 10KHz
2. Playback Mode .
VIVM
recorded
portion
ic
Confirm that the 1OkHz playback output is 0 + 0.5dB relative to the
315Hz output. If necessary, adjust RV81 (L-CH), RV9 1(R-CH) :
TC-WRS545, RV12 (L-CH), RV22 (R-CH) : TC-WR741 and
repeat the steps given above.
Adjustment Location ; AUDIO board
Record Level Adjustment
Setting :
REC LEVEL control : standard record position (Refer to page 7.)
Procedure :
1. Record Mode
AF OSC
blank tape
e CS-123
oO GVV——
o—o
— i>
2. Playback Mode
recorded VITVM
portion
ic
Confirm playback the tape recorded become adjustment level as
follows.
If necessary, adjust RV101(L-CH), RV201(R-CH) and repeat the
steps 1 and 2.
LINE OUT
Adjustment Value :
LINE OUT level: — 26 + 0.5dB (36.7 to 41.1mV)
Adjustment Location : MAIN board

— Adjustment Parts Location Diagrams —
{SYSTEM CONTROL BOARD)
Record Level
oF
(1) (R)
RVIO! RVzZ201
DECK-A :
[AUDIO BOARD)
DECK-B : TC-WR545
{AUDIO BOARD]
Bias Consumption Current
Record Blas
en
(R) (L)
AV9I RVE8I
RV72 (HIGH)
RV71 (NORMAL)
RV72 (HIGH)
RV71 (NORMAL)
RV21 (R)
AVIT (L)
T91 (R)
RvV21 (R)
RVit (L)
Tape speed
Playback
Level
Tape speed
Current
DECK-B : TC-WR741
{AUDIO BOARD)
Tere) Bias Consumption
Playback
Level
Bias Consumption Current
Record Bias
en
(A)
RV22 AVI2
RV72 (HIGH)
Tape speed
RV71 (NORMAL)
Playback
Level
RV21 (R)
AVIT (L)

SECTION 4
EXPLANATION OF IC TERMINALS
IC801 CXP82316-039Q
OQ
SIRCS IN
POWER IN
SPEED H/L
A/B
NRO
NRI1
MODE1
MODE2
10 POWER OUT
LIN MUTE
IC MUTE
REALY REC/PB
REC CALO
REC CALI
EQ CALO
EQ CALI
BIAS (B)
Sires signal in terminal.
I] Power OFF. OFF = OV
Power ON/OFF.
Line mute ON/OFF. “L”:ON
Meter mute. “H”:ON
Recording/Playback selector at DECK-B. “L”: Recording
Recording calibration. “H”:ON | |
Bias ON/OFF at DECK-B. “H”:ON
Test mode terminal. “L” : Test mode, “H” : Normal mode
E
4 tw
iC)
a
19
20 METAL(B)
70 w (B)
A/D CTRLO
A/D CTRLI
A/D INO
A/D INI
S. REEL (A)
S. REEL(B)
AMS IN
AMS/BS
RESET
EXTAL
XTAL
Metal tape selector terminal. “H” : Metal
CrOz2tape selectorterminal. “L”’:CrO2
—_—
dKSd —
RO —
oO
dO oO
—
:
AMS signal input terminal.
AMS/BS selector. “L” : BS ON
Reset terminal. Reset : OV
System clock output terminal.
System clock input terminal.
Recording mute ON/OFF. “L” : ON
OSC ON/OFF control. “H” : OFF
OSC H/L control terminal.
22
ZS
4
5 N
iS)
\O
OO With
we
KR
BIAS CALO
BAIS CALI
BAIS CAL2
BAIS CAL3
REC MUTE
OSC ON/OFF
OSC H/L
W
ON
3
3
39
0
oO
~
iN
\ee) Wi Ww
Nn

Description
ama
Capstan motor output at DECK-B.
Capstan motor output at DECK-A.
CAP. MOT (L/H)
NC
5 P16
P15
P14
48 P13
4 P12
Pll
P10
Capstan motor speed selector. “L” : Normal
Not used.
VFD Segment.
VFD Segment.
VFD Segment.
VFD Segment.
VFD Segment.
VFD Segment.
FD Segment.
&
i XI
ON
eal
\o
0
_
a
ssf red 0 | ve Segmes ——SSCSCSCSCSCSCSCSC‘C‘“‘<;<CS;~SCS
Vs [mr] 0 | vepsegnens OSS
ssf re S*dY OY WFD Segnens ———SOSSSCSC~—“CSCSC‘“‘“‘;<CS;~SCSS
ss_[ sO | FD Segme ———SSSCSCSCSC—SCSCSC“‘“‘“‘C Sd
a
se [dO ve Segmens, ——SSCSCSCS—C—SCSC“CSCSC“‘“‘; COS
Tse OVD Segmens ——OSCSCSCSCSC—“SsSCSC“—s*s*s*“‘“‘“‘~*S*SSSSSCSC*d
To) of web Segmen, OSS
apoio vera —SSSCSCSCSC—SCSCSC‘<;7<; ETS
Te [no [via OOCOC—CSCSCSCSC‘;<CSSS
a > | o |vmea SSCS
e#_[ 1% | 0 |vmGi SSCS
[mio von OSCSC—C—SSSSCSC“‘“‘“‘“‘ ‘ Cd
Le so ee ee
ae
FD Grid.
FD Grid.
FD Grid.
FD Power.
Power supply (+5V)
+5V
Reel motor (+) output at DECK-A. “H” : FF.
Reel motor ( — ) output at DECK-A. SHREW.
Reel motor (+) output at DECK-B. “H” : FF.
Reel motor ( — ) output at DECK-B. “H” : REW.
Mechanism stop switch input for DECK-A.
Mechanism stop switch input for DECK-B.
I Half pawl input for DECK-A. “L” : Available
ey
70
=
4
is)
o o
‘oO | CO; YX
VFDP
~]
W
74 | REEL MOTOR(A) +
75 | REEL MOTOR(A) —
76 | REEL MOTOR() +
77 | REEL MOTOR(B) —
78 STOP SW(A)
79 STOP SW(B)
HALE (A)

SECTION 5
DIAGRAMS
DOLBY NR AMP 7 TC-WR74I =
iC5O1 L 4 LINE/METER/HEADPHONE AMP
RVSOI
Rv902
r
3
1
1C521
(2/2)
Tem
wR545
LPFIOI
[
aa
[BALANCE] [REC LEVEL} bitten 1 R+cH «on, 502 i
FILTER
4
oA
I
(C503 1c502 O al PHONES:
we ee (Se ge ae ee eS]
|
TC—WR545 J501-1
LINE OUT2 @5)
Pe PSN Sy Be SEN RE Se LINE OUT
SWITCHING [LINE our]
il MOF | thee
ee MUTING
SYSTEM
CONTROL
0523
QreI
SWITCHING i IC80l
Qlo2 |
i TC—WR545
$923-1
CH
MODE
|
LINE
MUTE
>
TC—WR741 DOLBY NR a) ©) @)
i“ OFF ye
PB/REC EQ AMP D50I ne MUTE
1C521 (1/2) B IC MUTE (2) Qt22
{ NR
c MODE NR MODE
MODEO
HP1OI Ate RVI ©)
PLAYBACK.
HEAD
(DECK-A)
Mane
(DECK~-A) CONTROL TC—WR545
NRI
TC=
WR
741
-
oe
TC—WR545
ae
ee
OY
Y
I ~T I 504, 505 (6) NRO Cae ane A oe ef ae anes
PB
AMP
‘
TC-WR545
af
4,
HRPELOI-| —_ ieee HRPE|O1—| cl] |
| Be aera (DECK 8) REET ERE — NOISE AMP 3) OSC ON/OFF i
1C541
(DECK-8) (DECK~B) 541,542 GO OSC H/L
yg gy
+—o S8I(DECK~A} oo qe
SWITCH pes (78) STOP SW(A) t ae
IC3l DIR MODE
—_
O STOP SW(B) WW asus t + Eee
|
SBI(DECK-B)
5
i
m
i
| (STOP) @) qo ‘le Gap
t AWS —<——
S31 > 28) AMS IN A/D CTRLO@ oe
a 5923-2
AMS/BS ~¢ @9) AMS /BS DOLBY NR
REC -MUTE ~ (38) REC MUTE d] OFF
a/B « (5) A/B {
| . +l ee H (16) EQ CALO B
|
t
<
w—{7)
t
i
i
A/D
IN
1
@5)
cee
aco
C
| yale
| | CALIBRATION AREAL (15) REC CALI dj of
| 0802 | ~ AM (4) REC CALO 2
I
l |
1 | REC EQ $86 (DECK~A]
!
|
TT
9525,
526
1
(HALF)
(G0)
HALF
(A)
Q—
586
(B)
{ $81(DECK-A) | : ! (HALF)
(70p EQ} I [ $84 (B)
|
;
«
4)
SPEED
H/T
(REC
A}
lL
TC— R545 pe a
| =
L
,
|
~<-
(3)
RELAY
REC/PB
R-CH
i
$83 ( DECK—8) O- METAL (Bi
|
(METAL!
*t
@)
|
Sez
DECK
8)
=o
al
Qi)
70
(8)
B-
RECT
| me a CAPSTAN ine . D703, 704
TOR
| DRIVE @2) CAP MOT IA) CONTROL
9805 sircs @) (2) RECEIVER
|
MI(DECK-A)
SPEED
D805
iegol
CAPSTAN (M) co
| | MOTOR Q7! POWER SWITCHING VOLTAGE
| Z POWER OUT (10) ON/OFF 0704 CONSTANT
, 8d! 1701
|
TC-WR545 Sn RESET
54
Merten
a
RESET
G0)
icsog.
|
@
! Le ies
| >
| 2 SPEED D806 CAPSTAN
Mi(DECK-B} at
|
CAPSTAN
(M)
CONTROL
eae
@3
cap
MoT
L/H
+ {- 4 | \ MOTOR Q7l Q804 REEL
| I | REEL(A) + MOTOR
|
|
|
REEL{A}
—
DRIVE
r \ CAPSTAN 1€803(1/2) M2 (DECK-A)} B+ REG RECT
DOLBY HX PRO | Wee (i) CAP MOT (B) ee (+5) Q70t, 702 D701, 702
ic8l 1 Q806
BIAS i
CALIBRATION I $70i-1
T8l i MOTOR [POWER |
t 37) BIAS DRIVE OWER | SWITCHING
TC—
WR
741
3l5
ave!
|
(C803
(2/2)
M2
(DECK-B)
Q703
| ee + Ga) BIAS (M1) REEL =
1 MOTOR OK
| | | D706
AK wie r ag i 5) BIAS oe
RVOI D708
: G8) BIAS POWER ING) 4
D705
j
TPS
|
PI—16
[45
D707
|
|
i
(DECK-A)
B-
REG
| { nparlae DET 28) S+ REEL (A) 70, (VFDP) Q707 ,708
| | $701-2
EQ SWITCH ON
1¢805
|
I
rs
POWER]
T5!
|
(DECK-B)
o
2
2
oe
HRPE |0|-2 4 eee > B+ HRPEIOI—2 BIAS OSC oe DET eis) = & >< VenoOI pris
PB/REC/ERASE
X
¥
Q51-53
PB/REC/ERASE
X
G3t23
|
SWITCHING
(8-82)
—(1)
ie B) | ipLeK-B) | 9807
! vr : e> 40 i TP8OI
x80!
[ie eer ees _ eae Darah = faces ete BI Naess ce) oO aE a tape ah wee ve apa o | (TEST)
R—-CH is Omitted: Same as L-CH
02
AC
IN

5-2. CIRCUIT BOARD LOCATION
LEAF SW board
POWER SWITCH board
HEADPHONE board
PANEL board
e@ SEMICONDUCTOR LEAD LAYOUTS
PST600E-T
SBX1610-59
Ly
123
1. vec
2. VOUT
3. GND
NJL5165K-B
AUDIO board
(DECK-A)
TC-WR545/WR741
POWER TRANSFORMER board
(E model)
~ POWER TRANSFORMER board
(EXCEPT E model)
CONNECTOR board
SYSTEM CONTROL board
AUDIO board (DECK-B)
LEAF SW board (DECK-B)
DTA144ES
DTC114ES
DTC143TS
28C2603-EF
28D2144S
I
Bed
C8
2SA1162-G
C
B
2SA1175-HFE
2SC403SP-51
LETTER SIDE
28B1116A-L HZS6A1L
28D1387 HZS7A2L
2SD1616A-K UZL-7L2
11ES2-NTA2B
188120
CATHODE
/.
fd\
ANODE
2SB1565EF
2$D2012
MA110
SSA
Ni Mi
M as CATHOOE
CE
—>—-
28D1622-S
a” P ae
cf
E

TC-WR545/WR741
5-3. PRINTED WIRING BOARDS (SYSTEM CONTROL SECTION) ® Refer to page 16 for Semiconductor Lead Layouts.
@ SEMICONDUCTOR LOCATION 2 3 4 5 6 ih 8 9 10 | 11 | 12 a 13
J50! :
(Lie
IN
REL
US,Canadian
MODEL
ee
_
ota
cee
nat
AEP,
UK
,G
Australian
MODEL
e
MeDEL
[L rR] Et R | = ~ oe ee ~~ ey eiat geee et T ee Vee a a Sey ace = =<
Q
9)
°
©)
ae
IN
{SYSTEM CONTROL BOARD]
SER AGAR a
T701
T701
POWER
TRANSFORMER
_ POWER TRANSFORMER _
T701
POWER TRANSFORMER
oeeansreormiveet seine
ouamo
l
Oononow nun
meee vS701
Ce 31 poctace]
E-3 ] AC
> i20V IN
B-6
t
E-8
IE
|
240V
E
Cea
es
ai
;
af
220V
E-4
‘e
. ‘ ee %
SRS 8
7
io
zg
Ceozo.
:
Ld
PREPLACEABLE:
UIT IN TRANSFORMER
|~650-961-
Tm mmm
|
fon.
soba Nr
ab eines 23%,
G-5
D-11
D-11
D-8
B-3
RZD: oon,
TC=WRSG3.<
gf eee
ee or
é
_ fT
o
uUuOorwnw
I
Nt Pow
a ees
ERT,
RRR eA
1 pape
OS AS RTE SIRE
TO SW-A BOARD
(CN81}
"SA
t
Qwvomo
1
wo > OW Ww
=
-
:
[CONNECTOR
BOARD]
E-10
F-8
(CHASSIS)
G-6
TC—WR545
. poe a eS +
HEADPHONE
BOARD
* O—:: parts extracted from the component side.
*
Hs:
parts
mounted
on
the
conductor
side.
1~650~961-
*
©@
:
Through
hole.
: Pattern on the side which is seen.
1—650~ 961—-
COUNTER RESET
: Pattern of the rear side.
7
B
|
>
°G:
German
TO MD-B BOARD
TO
MO-B BOARD
TO
SW-B
BOARD
'
,
;
TO
MD-A
BOARD
AUS
«
Auetalian
(CNP
33)
(CNP3I) (CNP8I)
:
(CNJ31)
eo oe |: ea = 1 = 2) =

5-4.
SCHEMATIC
DIAGRAM
(SYSTEM
CONTROL
SECTION)
neon
1
2
3
A
=)
6
7
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
8
ee
i
Sa
Sy
i
a
a
a
gp
Bs
pg
Fg
ea
a
a
tes
Sy
ep
ee
|
[ PANEL BOARD 1/2 ] { MAIN BOARD ] | —_
A
oe
ei
SWITCH
NG
Swi
TCH
NG
A
i SEER ERARBES SPORE ASE TO era ane aT SS SE-WRZZTSST a 8101 ee RE ee ee ee ee eee ge Re Eye ee ee | |
CN901 €N801
37P
37P
R542
67.2
SWITCHING
ee (C504 ic502
=
—~
<=,
——
EE
—onmees
]
—=—_S=S]
SG
is7
[|
2
es]
fig]
E56)
Alen)
0
On
fs>
%
R543
NOISE
AMP
0,
MPX
GN:3.9
FILTER
(ff
apraycoe
<optayee
ifoimm
a
[al
I
5
ert
Sag
i
B
j
=F
Fo
7
a
oe
a
eT
C1
ial
!
wes
(C501
eco
S 3 R544 (543 :
.
CLE
wrecwce
a
mecm
w
OIE
|
|
eee
:
ee
ate
ieee
. =
fos
|e
a
er
ee
ee
|
ae
:
a)
2542,
©
tk
-
BOLBY
NR
dB
-®
-30
-20 “10
-4
po
(OO
+4
e—t-
&
ha),
2802603
§
z
\
HIGH
FRONT
L
ae
fos
[Pao
es
i
es
:
ee es ee ee ee ee eee eee eee rae es ae eee a ee j ey e "cos |
NORM 12345 6 7 8 9 1011 12 1 : : —— ; é
GI
&
:
NORM
[RMS
>
3
14
corse
a
al
i
ai
hd
SEREEnee
at
ee
el
ee
BACK R = es i ae al Pt = 8 3 a
Cc
ee
oa
a
ee
a
ee
ee
Pe
z 3
-
zr
82988
ses
(ed
GY
oll
fe
H
:
C
ra ra ime Q)
a a Os ele Ue
(es |, PS 3 | PS | VED ost Bs wel?
© © R861 ala info)!
'
aa
ie
Pé
2
Pé
100k
©
DRIVE
SIS
da
og
|
(a ad Q2OH)
(pa | 20 P8 20 P8 STOP:5.2 22a_a,¢
res [os a) REPEAT: 1-8 sea:
5 r= RELAY: 2,6 s a} S
D pero [Pf pio Pro) KEY INPUT i eed — mo aS04, 505
peut
Pe
a)
sie
Py
ros
wee)
504
505
D
1
Pelz:
Jy
mee
LE
&)
oe
soz
I
GEA = 15|_ P13) ea eae) P16 METAL @) ee
galas
ae
oS
|
P14)
és
ee.
SWITCH
r
H
$906
5905
9904
$903
$902
5901
ris
[.
|
PIS
Yel_PtS)
reer
TEST
Ce
Sy
|
pe
[9] ER) fe) 7 Te ae EY cs Re DA : Peis 16. be ore saree
rele
BIS
BL
BBIS
RSI
iS
i
ace
Da
beiz
28.2
7a
ca
re
OMS,
,
Sk
68K SSK
27K
BK
12k
a
i
ee
ee
Ago.
100
PVELER
“Ea
caLo™
DUMP
ONE S53
|
G)
lx
SOR
eed
I
E
6 6
re)
6
} 6
6
©
©
g
REC
CALI
TC-WRS45
|
|
[
|
>
N
R208.
SOLBY
B
:
52
a,
See
oe
a
Pd
SS
A
CTE:
eae
©.
[eWay
C04
E
ef gi
gr
gh
elt
gir
eos
[rasa
|
beg
=10-4
96
=,
si
ea
'
al
[8
3
: ;
~
2
g,
Ps
Je
MUTE
3
3
=
Q201
fl fe) 2) oo a Na 7 PO > AD hey =78.758) * 1c801 ae z = JS] swreune
; fk Agia fai? fo ae a — beg - 20.145 I
3 2
;
1
-
° ,
-—
iam
Ben
Fed
Bere
wae
cxpadf2!osoa
ae
ess
K
PANEL
BOARD
2/2
}
[|
|wpex
|
|.
Naa
ieee
at
ee
F
TC-WR545—=
-
[
5
[
3
[
a
[
|
———
6
a
6
4
pi
ae
acres
ae
50V
-
1
$916
sai7
8915
3914!
ati
lal.
|
op
So,
BOLBY B:t.9
poo
10a
ee
nat
(Y's.
||
Ae
F
Fiore
;
(SET)
[BISPLAY)}
21;
{8/8
—
1
DOLBY
C:5.2
Fran.
Pe
NRO
ee
ee
ie
ate
erent
sous
ayaa
eg
ae
poze
;
si
TS
78
|
RSS
Pro
2h
oe
FI
RA
1
ROS
are
ae
!
ez
cise
de”
cise
ge
NE
Sk/5K
Vt
BCFILTER
|
ae
ali
|S
1s
by
3
70
KR
gsreea
vt
(«)
fot)
gs2s
|
i
I
oe
oe
[Pls
Ee
ee
8
poser
wn
ay
8
.
pee
eee
re
ae
meee
wet
.
1
i
a
es
2
iy
.
s
t
7
Oo
So
:
.
J
SIRCS
i]
I
a
oO
¢
g
i
gay
|
vv
y
$923
sai
LT3__-26-39
Toes
:
i
a
eet ane
ee
:
!
'
OLBY
NR]
TC-wRS45
COUNTER
TC-WR741
TC-WR545
x
Ar
3
‘
s =
:
2
NAVEFORMS
G
!
!
4
cm
B=
OF
Ne
:
:
TC-WR545
a
ia
ee
G
air
ctoicca]
aia
(aria
y
yy
Stun
~WRO4
re
R95
R924
R923
SOOO)
“18
9526 9525
pee
he
I
a
50ns
Av
4.812
u_
2.7%
18k
12k
|
cee
ea
Goace
CAL
SWITCH
|
SWITCHING
OP
oe
ec
ihte
8
.
Ry
ee
SSS
SCHL
AC
yard
Bann:
poze
°h
E
oh
ROSS.
2.
al
4d
7
:
RV902
RVSOI
fe
we
t02.0"
z
ft
Ne
EESLESE
-
}
qeeie)
acl
'
9922
3921
$920
1C901
TED
othr
oe
—s
6
0s
47
SOV
GEO.
D
é
RE
AWEL]
BacaNce
vv
COUNTER]
[NORMAL]
[HIGH]
190
GND
ia ee
C124
4
RECEIVER ;
H
SIR
MODE
|
SW-A
BOARD
)
70U
Eo
-
POWER
DET
2:L.
Se
5)
H
~~
CD
ORELAY
(CNP81)
HALF
a
ares
Sere
=
R227
100
-—\
0
Co)
wre.
an
10521
x
<See
Pegs
>
+5V
fer
eR
tees
ene
ee ee
a]
|
7885p
ae
R127,
100
=~
Pe
5.
REEL
fi
—
WAR
ADOs
oP
ee
0
REC
EQ,
METER
ae
St
ee
ey
a
ee
eee
pee
ee
ee
ee
ee
Se
ee
|
R126
100
—<
.
AMS,
HEADPHONE
AMP
EINE
WIN
|
ieee
——oI
’
=
|
a BRS RSE 6)
l
fama
a|g
STOP.
SW
<
w]e
reek
aE
as
$W-B
BOARD
seg
j
4
Di2t
22!
é
©)
aT ‘ ns (cNPa1) 7 : , 4, MUTE UZL-6L1 UZL-6L1 Q122, 222 thas TOOWRTAT
<Sae
Page
>
pe
a
METER
MUTE
pe
aie
a
J501-1
-
8
FEEL
i
ee
ie
>
ENE
aE
e
{CONNECTOR
BOARD]
|_|
eee
Ee
al
|
_ are Pee oe SN 5) Ic
!
ee
i
aul
;-®
t
;
is
|
;
+7.5V
r
{|
||
'
K
iL
CH
(PB)
15
t
GNB
t
'
46
R
CH
PB)
(1
(|
J
K
-7.5V
MB-A
BOARD
aoe
a
{CNJ31) ae a
<See
Page
>
roy
=|
HIGH 1
L moron.
Note
:
L
- All capacitors are in F unless otherwise noted. pF: y u F C522 & 5 1% a
50WV
or
less
are
not
indicated
except
for
electrolytics
and
+7.5V
ov
Vi
8531
1
tantalums.
L
CHB)
ne
Me
1N4148M
* All resistors are in Q and 4W or less unless otherwise ss ob wee [oe an
cee
a
2
|
3
Cr
tie
a
me
ee
+
%
+
indi
MB-B
BOARD
CONSTANT
_
icates
tolerance
(TC-WRS45
:
CNP33)
mea!
|
Raia
2
SSS
SS
SS
See
M
-
A:
internal
component.
(TC-WR741
:CNJ33)
REEL
——
a
“=
acne
a
+5V
-
fW-F
:
fusible
resistor.
Se
HIGH
BEE
eer
3
9702
7 BRIVE = HES?
wate
ie
zt
7
at
WE
ee Gis VOLTAGE 5 4.7% 50V 706 i
cpg’
ere
CONSTANT
5
R706
The components identi- | Les composants identifies par N 2stse7| 3 Sc18 8 is LY Boe
fied
by
mark
/{\
or
dot-
|
une
marque
/\
sont
critiques
22k
Dita
Oy
aaaeGne
ne:
N
ted
line
with
mark
pour
la
sécurité.
ae
P
EF
NE
[POWER
TRANSFORMER
BOARD)
are
critical
for
safety.
Ne
les
remplacer
que
par
une
L
cH
REC
apa
C701
re
Replace
only
with
part
|
piéce
portant
le
numéro
spéci-
es
GND
HMSSSeH
para
=
‘Sov
|
A\
1701
number
specified.
fié,
RCH
REC)
i
aera
ipecred,
:
S
-
CNP701
CNP704
POWER
TRANSFORMER
MO-B
BOARD
2%
9708
peo!
CNP?
ANSE
ORME
5
0
ate
Se
‘
(TC-WRS45:
CNP31)
al
Tere
P
Paes
re
Teo
(3)
ke
:
O
Qe
i
:
B+
Line
0
(TC-WR741:CNJ31)
ae
5
—>F
i
:
@
IN
:
NC
:B—- Line Spee Rage? NC eet 25 A 0
—_
f
oO
oO
:
|
:
adjustment
for
repair.
-2.6V
1190
Q805,
806
Q804
\
olf
TYPE
|
©
CAPSTAN
MOTOR
CAPSTAN
MOTOR
eas
.
oI.
*
Voltage
and
waveforms
are
de
with
respect
to
ground
under
|
BRIVE
NOR/HIGH
L
(0)
|
29Kiges
|
eee
Lol
te
no-signal
conditions.
—}——
aT
are
VOLTAGE
CONSTANT
8707_11ES2
os eS
ae
eae
eee
‘|
no
mark
;
STOP
BIAS
SWITCH
GORE
Nh
ee
ee
ee
eee
ee
|
(
)
:
REC
.
P
|
~
BIAS
V
: ;
@
;
SWiTCH
P
*
Voltages
are
taken
with
a
VOM
(
Input
impedance
10M
Q
).
1
cas
ge
Po."
|
sRaze
saaes
nz
gz
nn
a
ne
ne
nt
Voltage
variations
may
be
noted
due
to
normal
production
See
oe
eee
1C805
mn
aoe
wt
oe
a,
A
See
ee,
A
oe
tolerances.
~6.9"
C2)
BIAS
1701
.
¢
6.3
nasz
St
SANS
(7)
AG
¢
Waveforms
are
taken
with
a
oscilloscope.
5.3
2.7k
T
Sov
ee
cues
Be
het
CNR
IO2
9
i
ee
Se
ee,
ee
Se
et
IN
Voltage
variations
may
be
noted
due
to
normal
production
Sars
-
&.S)
Ales
ne
'
Rene
A
=
2.7k
2.7k
:
=
a?
:
+
a
i
t
eee
.
Q
——
1
eas
!
f
area
e
mi,
ie
fe
el
cuzo2
:
ima
ircled
numbers
refer
to
waveforms.
RELAY
ORIVE
10805,
Ned
i
|
1
Q
.
BLK/RED
MC14052BCP
1C804
H
©
I}:
i
120V
'
°
Signal
path.
we74Hco,
BIAS
CAL
1
&
;
:
n
1
!
;
1
S>
:PB(DECKA)
i
502
"|
Be
—
eee
rR
ere
|
[PHONES
>
<]
8701
1
220V
>
REC
(DECKB
SDP:
REC
(
!
[HEADPHONE
BOARD]|
|
pb
POWER
!
|
[>
:PB(DECKB)
-
z
a
va
q
_
pene
a
eae
ae
rae
teed
sta
ce
E
Unsieeceuete tee eset eleue Berlei beech he Se ee a teh loys fe A 4 AEP, UK, G Austrattan MODEL E MODEL
°G:
German
R
TC-WRS45
| |
:
OFF
R
AUS : Australian
[POWER SWITCH BOARD] !
jereinemenmentoecol ee
02
edb
ee
a7
ae
=
23
=
=
2h
agers

TC-WR545/WR741
5-5.
SCHEMATIC
DIAGRAM
(AUDIO
SECTION)
1 2 3 4 =) 6 7 8 9 10 11 12 13 14 15 16 17 18 : 19 20 21
TC-WRS45 TC-WR74 1
1p RS tS SS a ee EIS lg ee ep iT Ra ha A err re TTS ae GND ag Sa Be WOKEN SPP E ME a gat eRe pO aging To Fg Fences SE ear ne TR gt ng yt Neg vge Be E erp Se eT ee ag eg patte as Be ees ele gags Bea reg gc ea ge legiog GE ER pe ae gw eo SE Te, ag nen Rene eats MR gor ra ne eT Po seer tas ere es es SS SS a ee ees a Sse anicee Sete Get ee ae anes ssa a SSeS See eee a aera Soe Se Se SOR SSS See ea SSS Sa SS Se SoS SS eee CST aS SSSA STAT as Se GRRE ARS Sela Ts Fe ee a RR RS TRS TRO Ree SS SR SS ae Rr a BR nee a)
e IC BLOCK DIAGRAMS
H Ss = a ea a a a Nk et a eee H a i ge ae te
Al: |
IC501 CXA1561S : MD-A BOARD ] [ SW-A BOARD ] | [ MD-A BOARD }
SB1A
56%
cae
2 = = = ‘ (STOP DET) (STOP BET)
5
z
i
=
g
g
5
5
8
#
g
:
|
)
3 2 5 = = 5 e 2 # 2 > S82A S82A
(i) (0) (19) (7) (18) ® H (C r02) : (C 02)
TO MAIN TO BALM
B ' 72 {HALF BET) (CN802) : 072 (HALF ET) (CN802)
CNP71 1 : CNP71 Si ;
M2A rm! Sov M2A +r! 50V TAPE SPEED
REEL
ae
2
(HIGH)
I
REEL
(My
=I
2
(HIGH)
I
UNGTRR Sel Ls ae ) | wovoR Ned eh
! U GP2509-C 1 (oa
TAPE SPEES NUL 1 &K-B t TAPE SPEED
(NORMAL) f (NORMAL)
eNP72 vo Q71 1C81 CNP72 a7t 1C81
Cc aA SWITCHING | ROTATION DET sPEE® To! SWITCHING | ROTATION BET
/ om ____ - ~ - | min ME L___ — —_—"- -
CAPSTAN ! CAPSTAN |
MOTOR : MOTOR | a
H | : neal
: t
| | !
Di:
|
CNP32
PB LEVEL ' 3 PB LEVEL
' x L : » Lo L
L-CH = 2 s RVIT Leche get | RVI
! Cit Lo :
! 3909 = hg +7.5V : is +7.5V
HP101 L CH (PB) HP101 L CH (PB)
IC502 CXA1599Q E PLAYBACK GNB (SIGNAL) PLAYBACK GNB (SIGNAL)
“as HEA® e R CH (PB) HEAD R CH (PB)
e rs 9 © he ' S -7.5V TO CONNECTOR | x ~7.5V 7G CONNECTOR
« @ 8 8 g = = 8 » 2 & { = RY2I ae BOARD : ss RY2I REEL+ BOARD
3
££
££
gg
=
2
§
&
2
we
R-CH
=>
2
3
ue
(CN801)
R-CH
+=
&
ha
<
tk
(CN801)
R ; ues +5V
69-—G)—69) G9) Q% C28 5 ay 07 C28 5
1000 _ HIGH 1005 HIGH
i Ic3i_ | 220 7 : R32 -
meine Sica eS herk 7V (MOTOR) pcg 7V (MOTOR)
F I: i
NR IN2 METAL I C31 } i ] C3T
' PB AMP i PB AMP
PASS 1N2 SPEEO 1 !
PB oUT2 REC MUTE i at, ag a Gd i = = os eevee eae ay reali rn Se eS
oe peer ! [ MD-B BOARD } [ fd ] | CMD-B BOARD ] , =
G
|
!
STOP
geT
f°
ee
al
GND (VG) ovec ' STOP
Cro eT YS SYS.GNB
{REF DGND t ! METAL
T
TO MAIN BEM 25 a 70U TO MAIN
Vol.
OUT!
vee
Sat
TAPE
SPEEB
BOARO
|
ae
eas
HALF
BOARB
ee (HIGH) (CN803) oy (CN802)
M2B le ERASE PROOF &
PB OUT! HEADPHONE VEE H hoa | (SIDE B) 5
| ane J HALF DET
PASS
1H}
PVEE
TAPE
SPEED
== | (NORMAL) i
HEADPHONE H '
WR IND METER2 : CNP72 eee tan Hi | op7s09-C
;
SPEED
I]
!
Q7t
t
NJLS1&K-B
Speed 2SA812 y
1 2 i
REC
IN1
METER)
!
MIB
I
>
: CAPSTAN ) +sv | 3 4, R71 RV71 1C81
; MOTOR = 10k
S
©
O—-O—-O-8
i
ae
te
ba
ae
!
2
ROTATION
BET
- ~
a
~
2
=
.
-
ns
a
-
«
47k
47k
1
i
Bo See ee ee ee ee ee sat ee | !
re)
re)
$
ive
a 2
2 2
:
a
H
8 g 2 Ss & 2 2 £ & H !
HRP101/HE101
i RECORD/PLAYBACK/ERASE 1031
HEAD
aaa ae: I
a
a
ee
Fathi]
:
:
!
fe
5
CNP31
1 kK 1
L-CH 3 Ol] +7.5V
‘ N Ps q Poy :
|
s
bk
0.
ZaE
Se
|
>
O2
L
CH
(PB)
072
CNP71
3P
Kise = SEER O3| GNQ (SIGNAL) 1 50v Mt
i . : Sarre ama O5} -7.5V TOCA lo @ MOTOR
+ All capacitors are in F unless otherwise noted. pF: u u F == rt x, aaa BOARS Ls |
F . 3 i i q ‘ 3
50WV or less are not indicated except for electrolytics and K +> & fj O7| REEL- Nets 1032
tantalums. R-CH cha rs rt O8 +5V HRP101/HE101 sae
. . . ‘ 1
+ All resistors are in Q and %4W or less unless otherwise 1008 | Loe O39} HIGH 1 RECORO/PLAYBACK/ERASE EA BAC eG Ane a
ees
1
j
i
specified. wecdS7062 10 | ~7¥ MOTOR) HEAD a
* % : indicates tolerance. | I ( SPEEA CAPSTAN
|
|
|
eo
ane
* A: internal component. ys
‘ t . t A. I
* . ! 1 " i
- fw--+ : fusible resistor. L ; Loch |
Note : Note :
The components identi- | Les composants identifiés par y OR Oh
fied by mark ordot- {| une marque sont critiques : HIGH:2.1
ted line with mark pour la sécurité. eva ome
are critical for safety. Ne les remplacer que par une : i Q71B
; ie Jot. NORM/H1GH
Replace only with part | piece portant le numéro spéci SPEEA SWITCH get aap
number specified. fid. Mi: i
t ! 4 I
; A +7.5V
: B+ Line ners L-CH (PB)
Spot
pees
2saie225
GSI,
52
aun
Pe
rane
R-CH
(PB)
: adjustment for repair. -7.5V To
CNP33 Sets MAIN BOARB
e Voltage and waveforms are dc with respect to ground under ©1| BIAS ' ' REEL () ane
no-signal conditions. ; NI! I ©2 | L CH (REC) SW ITEH +5¥ (MOTOR)
no mark : STOP aa O3| GNA HIGH
O4 R CH (REC) ! \ -7V (MOTOR)
¢ ) : REC ! pb] Be) Heeay TO MAIN
+ Voltages are taken with a VOM ( Input impedance 10M Q ). = O06 (CN802)
sge . 7 1 : ’
Voltage variations may be noted due to normal production I 07 '
tolerances. ; 08 BIAS
‘ ae Og} -2. 7
*
Waveforms
are
taken
with
a
oscilloscope.
:
Aree
L~CH
(REC)
iati
i
0}:
©10
|
TYPE
mi
Voltage variations may be noted due to normal production ! Scape
tolerances,
Cieied
Ce
RF
QS1,
52
953
RELAY
@
Bee
nae
* Circled numbers refer to waveforms. | Re? | 130 BIAS OSC BIAS B+ SWITCH +5V eNeeae)
;
!
16V
30V
£27
7
953
° Signal path. f 390 390e 2581822 BIRECTION
(pee
BIAS
'
{60
Ne
QUICK
SD
:PB(DECKA)
z
Este
NC
>»
:
REC
(
DECK
B)
Ts
P
.
a <a H H i
[> :PB(DECKB) P | : 48 gs avid
a, Cree ten S go
2 . 3 t i 1
SG Geiney (DOD-1D)-114)119) (117.118) ad
AUS : Austen : 2. EP OG Oe a
: Te et |
: R-CH ! ‘ f
‘ c30 £93 1 | ERASE 1
4 . ‘ : 1 O 2
a 3 i T
Q|
|
! i
X
gE
Toh
Po CNP32
7P
! re Se a = -
02
i H
Titel Dat ec Ft oS et Ail cs B ttPin end sal tin th aaia BAN heal aA wohl ah oa a Nhe ae MAG Bae Nak Se AE As tes a a ee a ee he ee nee ee ak BS nee eee Sas ee nseode pee eee eats has Meee tea ME Sit OR Ot, oa MO Cale see OO ee a end Se EO ae Sh gL a IAN oe ieee kel he els bara cnt sense sates eons ee Sao tat ce ea eels wre Soe te eee tl oe Pee ete oe weet a ent cael Stig Sane kD Anas
—
26
—
~
27
—
|
eag
|
ay
—
30
—

5-6. PRINTED WIRING BOARDS (AUDIO SECTION)
ar ee na es 4
@ Refer to page 16 for Semiconductor Lead Layouts.
9 6 i 8 a 10 11 12 13
TC-WR 545
[re a ee Rn eM ya BET eR One pas ae Ve AYES Tepe FP yar ene ey tare ME yy tg op ey on ae ange Py ee Pp a oe Say ey ee ee Og ey pr ee ee ee ee ee ee Wa ed ek ee ee aw OF eee yl
(AUDIO BOARD] (AUDIO BOARD] rin a
(DECK-B)
(DECK-A)
M2 A
REEL MOTOR
HRPIOI/ HEIO)
RECORD/
PLAY
BACK/ERASE
(CHASSIS)
HEAD
M2 B
REEL MOTOR
Mia
HPIO!
CAPSTA
PLAY
BACK
PSTAN
MOTOR
HEAD
MIB
CAPSTAN MOTOR
tsetse
"Serernnsrn sient
fj "ee reese
TO MAIN BOARD
TO MAIN BOARD
(CNP803) (CNP802)
|
|
TO CONNECTOR BOARD
(CNP8OI)
TO
MAIN
BOARD
TO
MAIN
BOARD
(CN803) icNao2)
{ T
i
l
. $83 | S86B_ S82
[LEAF SW-B BOARD] METAL DET | HALF DET CrO2 DET eee oe cree the
I
TC-WR545/WR741
TC-WR545
@ SEMICONDUCTOR LOCATION
(DECK-A)
| RefNo. | Location |
[AUDIO BOARD]
(DECK-B) ;
{AUDIO BOARD] 32 23 24
(DECK-A) Y
WHT
RED
M2A
REEL MOTOR
(DECK-B)
Tet ne. | toeton |
(CHASSIS)
M2 B
REEL MOTOR
MIA
CAPSTAN MOTOR
HPIOI
PLAY BACK
HEAD
HRPIOI/ HEIOI
RECORD/
PLAY
BACK/
ERASE
MIB
CAPSTAN MOTOR
Grae * i ‘
ee ee
; SRR SIRE ER 4%
:
TC-WR741
@ SEMICONDUCTOR LOCATION
(DECK-A)
1C31 | D-26
IC81 1-27
Q71 D-28
(DECK-B)
Location
1~651-268-} [I 1]
TO CONNECTOR BOARD
(CNP801)
A
B cA)
TO MAIN BOARD TO MAIN BOARD
(CNP 803) (CNP802)
TO MAIN BOARD
a
etentes
ns
TO
MAIN
BOARD
c @ (CN803) ‘ (CN802)
S86A S82A
META T
ear ee HALF DET Cr02 DET
[LEAF
SW-B
BOARD]
te
HALF
DET
CrO?
GET
[LEAF SW-A BOARD]
um 8D
PSERASE PROOF
(SIDE Bd.
Note:
* O--— : parts extracted from the component side.
‘ « (HP: parts mounted on the conductor side.
* @ : Through hole.
: : Pattern on the side which is seen.
: Pattern of the rear side.
°G@: German
r
|
|
{
|
|
|
|
|
|
I-
|
{
|
|
|
|
|
i
|
|
|
|
|
|
|
|
I
l
|
|
|
|
|
l
|
|
|
I
|
|
|
|
|
|
|
I
I
|
|
l
|
|
|
|
|
l
|
|
l
|
I
|
i
|
I
|
l
|
I
|
|
|
|
AUS : Australian
i
L i
a
a
a
at,
a
a
a
a
a
a
hg
i
er
ts
ae
ka
at
eat
ey
ts
ep
er
Bi
i
I
oe
St!
Sh
Se
pee
eee
—
33
—
—
34
—
eae
ames

SECTION 6
EXPLODED VIEWS
NOTE: eae eee Ta SO ER
@ -XX, -X mean standardized parts, so @ Items marked “ * ”are not stocked since The components identified by
they may have some difference from the they are seldom required for routine mark \ or dotted line with mark
original one. service. Some delay should be antici- A\ are critical for safety.
@ The construction parts of an assembled pated when ordering these items. ers only with part number
part are indicated with a collation @ The mechanical parts with no reference specified.
number in the remark column. number in the exploded views are not Les composants identifiés par une
supplied. marque \ sont critiques pour la
.@ Hardware ( # mark) list and accessories sécurité.
and packing materials are given in the Ne les remplacer que par une
last of this parts list. . piéce portant le numéro spécifié.
@® G: German
AUS : Australian
6-1. CHASSIS SECTION
AA; CONNECTOR BOARD
AB: POWER TRANSFORMER BOARD
E Mode!
Se eae
US, Canadian Model
E Model
E Model ta
PF -
GY UO ! AUS Model TC-WR741
3
: AEP, G Model
| 2 UK Model
L |
| es
=
| i
~~
l=
vu

Ref. No.
x * ad
ee aoe
*
on
anya O oO!
A8
A8
Part No.
Description Remark
4-943-088-41 CASE
3-704-366-01 SCREW (CASE) (M3X8)
3-346-265-31 HOLDER, PC BOARD ©
1-569-007-11 ADAPTER, CONVERSION 2P(E)
A-2007-140-A SYSTEM CONTROL BOARD, COMPLETE
(WR545:US, Canadian)
COMPLETE
(WR545 : AEP)
COMPLETE (WR545 :G)
COMPLETE
(WR545: UK, AUS)
A-2007-141-A SYSTEM CONTROL BOARD,
A-2007-142-A SYSTEM CONTROL BOARD,
A-2007-143-A SYSTEM CONTROL BOARD,
A-2007-144-A SYSTEM CONTROL BOARD, COMPLETE (WR545:E)
A-2007-145-A SYSTEM CONTROL BOARD, COMPLETE (WR741)
1-765-216-11 WIRE (FLAT TYPE) (11 CORE)
3-703-244~-00 BUSHING(2104), CORD (AEP, UK, G, AUS)
3-703-571-11 BUSHING (S) (4516), CORD
(US, Canadian, E)
1-551-188-XX CORD, POWER(E)
1-558-945-21 CORD, POWER (POLAR. SPT-1) (US, Canadian)
1-575-651-21 CORD, POWER (AEP, G)
Ref. No.
A8
A8
14
15
16
AT701
AT701
ATT701
AYS701
Part No.
1-696-586-11
1-696-845-11
4-949-235-01
3-909-660-01
3-909-660-11
3-909-660-21
3-909-660-31
3-909-660-51
4-308-840-11
4-956-370-12
X-4941-291-]
X-4941-292-1
X-3340-138-1
X-4941-228-1
3-704-515-01
1-450-837-51
1-450-838-51
1-450-839-21
[697s 155-11
Description Remark
CORD, POWER (UK)
CORD, POWER (AUS)
HOOK (US, Canadian, AEP, E, G)
PANEL, BACK(WR545:US, Canadian)
PANEL, BACK (WR545: AEP, G)
PANEL, BACK (WR545:UK, AUS)
PANEL, BACK(WR545:E)
PANEL, BACK(WR741)
HOLDER, WIRE
BAND, PLUG FIXED (UK, AUS)
FOOT ASSY(F58175S) (WR545 :US, Canadian)
FOOT ASSY (F58175S)
(WR545:AEP, UK, E, G, AUS)
FOOT ASSY (WR741)
FOOT ASSY(WR741)
SCREW (BV/RING)
TRANSFORMER, POWER (US, Canadian)
TRANSFORMER, POWER (AEP, UK, G, AUS)
TRANSFORMER, POWER (E)
SELECTOR, POWER VOLTAGE (VOLTAGE) (E)

6-2. FRONT PANEL SECTION
AC: POWER SWITCH BOARD
AD: HEADPHONE BOARD
AE: PANEL BOARD
53 52
Ref.No. Part No. Description Remark Ref.No. Part No. Description Remark
51 X-3367-783-1 PANEL ASSY, FRONT (WR545:US, Canadian) 66 3-354-962-01 SPRING (EJ SAFTY SPRING R)
51 X~3367-786-1 PANEL ASSY, FRONT (WR545: AEP, UK, E, G, AUS) 67 3-909-658-01 BUTTON (FR-M) (WR545)
51 X~3367-787-1 PANEL ASSY, FRONT (WR741) 67 3-909-658-11 BUTTON (FR-M) (WR741)
52 X-3367-785-1 LID (B) ASSY, CASSETTE 68 3-909-659-01 BUTTON (SR-M) (WR545)
53 3-367-431-01 KNOB (BAL) 68 3-909-659-11 BUTTON (SR-M) (WR741)
54 3-909-661-01 KNOB (REC) 69 A-4325-163-A HOLDER (L) ASSY, CASSETTE
55 X-3367-784-1 LID (A) ASSY, CASSETTE (WR545) * 70 3-354-953-01 LEVER (LOCK LEVER L)
55 X-3368-171-1 LID (A) ASSY, CASSETTE(WR741) a 3-354-961-01 SPRING (EJ SAFTY SPRING L)
56 3-377-328-11 BUTTON (EJECT) 1Z 3-354-955-01 LEVER (EJ SAFTY LEVER L)
57 3-377-330-01 BUTTON (COUNTER) 73 3-354-959-01 SPRING (LOADING L), TORSION
58 3~382-382-11 SPRING, COMPRESSION * 75 3-354-954-01 LEVER (LOCK LEVER R)
59 3-354-932-01 BUTTON (POWER) 76 3-354-957-01 JOINT (LOCK LEVER)
60 4-951-620-11 SCREW (2. 6X10), +BVTP * 77 3-377-337-11 HOLDER (FL)
61 A-4325-164-A HOLDER (R) ASSY, CASSETTE 78 1-765-214-11 WIRE (FLAT TYPE) (7 CORE)
62 3-308-823-11 DETENT, CASSETTE 79 1-765-217-11 WIRE (FLAT TYPE) (37 CORE)
63 3-354-963-01 DAMPER 80 1-765-213-11 WIRE (FLAT TYPE) (7 CORE)
64 3-354-960-01 SPRING (LOADING R), TORSION 81 1-765-215-11 WIRE (FLAT TYPE) (7 CORE)
65 3~-354-956-01 LEVER (EJ SAFTY LEVER R) VFD901 1-517-263-11 INDICATOR TUBE, FLUORESCENT