Pioneer CT-7R User manual

dW) PIONEER’
Service
BACCARAT AA OANA,
Bed Ef eet ORDER NO.
This photograph is CT-7R. ARP-001-0
STEREO CASSETTE TAPE DECK
T=7R
CT-6R
PIONEER
ELECTRONIC
CORPORATION
4-1.
Meguro
1-Chome,
Meguro-ku,
Tokyo
153,
Japan
U.S.
PIONEER
ELECTRONICS
CORPORATION
&5
Oxford
Drive,
Moonachie,
New
Jersey
07074,
US.A
PIONEER
ELECTRONIC
(EUROPE)
N.V.
Luithagen-Haven
9,
2030
Antwerp,
Belgium
PIONEER
ELECTRONICS
AUSTRALIA
PTY.
LTD.
178-184
Boundary
Road,
Braeside,
Victoria
3195.
Australia
YZ ©ONOV.1981 Printed in Japan

CT-7R/6R
1. MECHANICAL DESCRIPTIONS
1.1 Mechanism Operation
The various mechanical sections of the recorder
are operated using the capstan motor to provide
the driving force. The various modes are activated
by solenoid L and R, and these are controlled by
commands from CPU PD6006.
Both the capstan and reel-motor are direct-
drive motors fitted with a Hall sensing element.
Reel-motor L and reel-motor R (hereafter called
RM L, RM R) are used exclusively for tape take-up
in the FF, REW, PLAY, and REC/PLAY modes.
The direction of rotation and rotational speed of
these motors are controlled by commands from
CPU PD6006.
The right side capstan motor is the DD type, and
the left side capstan motor is belt-driven by the
right side-motor. A sub-rotor acts as the actual
capstan. (Refer to Fig. 1-1).
The mechanism forming the right and left-hand
side of the unit is essentially symmetrical in
configuration, and in forward and reverse (here-
after abbreviated FWD, REV) operations, each
side acts together. This description covers the
mechanical operations for FWD movement.
= Basic Operations of the Mechanism
The mechanism assumes three different states:
STOP, PAUSE, and PLAY. Consequently, since it
can travel in the FWD and REV direction, there
are a total of six states possible. There is also a
direction operation for switching between FWD
and REV travel. Transition between the FWD
and REV state will be described using only one
example.
When the mechanism, presently in the FWD-
PLAY mode, is switched to the REV-PLAY mode,
a direction operation is required, then the mecha-
nism will make the transition following the steps
listed below. (Refer to Fig. 1-2).
Solenoid L, Solenoid R
ans |
Fig. 1-1 Mechanical construction
STOP state STOP, DIRECTION (DIR)
PAUSE, PLAY/PAUSE , |
PAUSE state REC-PLAY / PAUSE,
FF, REW.
PLAY state PLAY, REC/PLAY.
Fig. 1-3. Mechanism mode transition flow and modes

1
2
2.P.C. BOARD PATTERNS
Mother Assembly (RWX-593)
Q340
is}
CNB“.
acaoo0o0oo0ag00000
1¢302 Q302
Q306 Q307 Q303
etre tee ee
OEE TIE ORE ME
Q308 Q309
VR303
311
Q310
L306 VR301 VR3O5S
TP302 TP
IC304 1C303 Q324 Q327
Q304 9305 Q320
TP301
303
Q3zi9
Q3xi6
1c305
QH15 Q314
Q3i3
ae)
1K OA 7 OA90
7
Dolby NR Assembly (RWX-5
Amplifier Assembly (RWF-1
Q508 Q502 Q504 Qs06 Q5i4
vR502
Qso1= soe"
2S€2240-GR

a
\
\
2)
So
\
0
O
a
a
iL
o
T
Ww
=.
Oo |
4
=) x ig
0
|
Le
0.
Tape Transport Mechanism RYM-157

@oOe
o@
FUNCTION SWITCH Assy
RWS-1i40
és
ee
ai s
"
Xe
«{\ 4 Sg0j REC MUTE
" e ; 3
nae Bie
INDICATOR Assy RAW- 163
CC O--O ©
y)
4
LEDII07
F (Cr02)
LED1108
¢ (METAL)
LEDI109
¥ (DOLBY: B)
LEDI410
$( DOLBY-C)
(ps)
Nt J
(mi
ay,
(ps)
ey
(yi
tJ,
@
@)
)
(10)
(1)
(2)
CN320
LEVEL METER Ass'y
RAW ~ 164
“48 : a AC: * 2 mee er a
al 2 lef Ae ~ 02
eA pee Sor
bs lone Freon LOOK
nt it me
1 oo UO gg Rit 780.06
‘ on :
METER ORIVE Ass'y
RWX - 500
LEDION4
(-10)
ti
LED1101
LEDHW02
(FWD)

1
2 3
4
5
|
6
3.
SCHEMATIC
DIAGRAM
Signal and Control Section DOLBY Ass'y (RD
sor?
DOLBY
Ass'y
(R)
602-2
601-3
601-4
MOTHER
Ass’yit/3)
a
602-1! — 60I-10
SWITCH Ass’y Cole? : 602-2 601-4 601 -10 60
A 60224 ‘Joovey Ass'y (L)
ts
ee
om
“
si
x
305
17
2\
319-1
MOTHER
Ass'y
(3/3)
RWX-
54S
238
3g
PP
}
po
ete
sl
L
.
us
Si
nD
ot
Mad
eee
(172) _RWX-498
RWX-
545
=
©
:
Se
eenose
we
seanarae
D301~
303,307.31,
313,314
cd
t
$801.
INPUT
SELECTOR
MOTHER
REC
1S2473
or
USIO40
RKN-O75,
Ass'y (2/3)
BE
Bie
at
in?
Q301,
IC
30!
1¢306
803
MUTING
Tc40668P
MBB 40668)
ee
ed
rie
wr
at
1C301
MB74LSI22
or
HD74LSI22
$302,303
99LeY
Ne
HO140668
or
SN74LS122
or
DM74LSI22 SWITCHING
bmg van701-2
1¢30
(v7
VR701: INPUT
R822 RCV- 096
Q803, 804 :
FLAT AMP 1 3 oe"
grr
{ \ 301-2
Q80IX804 2SCI740LN or nec pLay |
2SC2021 or 2SCi815 or 1 REC a
2SC2634NC
|
R
meee
Seni
Nio 0308 ,309 2501189 _ or
CAPSTAN
Ne
28C2437
or
2SD882
CONTROL Ass'y Nr osc
REC L
0333 , 335
a
VR301,
302
1S2473
or
AMP Assty RWF -O95 “1 sias ‘aps Q310: SWITCHING (REC -= ON) US1040
a
i
.
a
ine
a
77 RCP- 200 324 0.0033
N r---7 71503 1cso1 or! @
REC EQUALIZER AMP
RSW
22k
Q509%,
512
0513, 514
CONNECTOR | SUT EG SWITCHING
Ass'y (REC -- ON)
a‘ C517
503
0.022
vrsor
R382
100%
‘ 2b m-t
$—24, &
bon. Bl a ( rvsorrecay 13
Se
RSR-
035
0333
REC/P B 0314 315,319
—
ueae
2SCI740LN
or
= Q501~ 504 Q505~ 514 2SCIT4OLN or
ae
28€2240_
or
28C2021
or
2SCI8I5
oF
9305
208
2SC2634NC
oF
? EQUALIZER AMP 25C2634NC (NORM == OFF) NJM4558D_ or 2SC1BIS or
ANG552 or 2sC2021 or
KTCIBIS
© £3 ra
ie
12 14
oa
BA4558
FU301 T8OOmA
Ay ReK- 064
050! «182473 or vRSO1, 502 P B LEVEL ADJ
12473 Re anon 0507, 508
FLAT AMP
0320 , 329,330
0323, 325
{$2473 or
US1040
a 3.7?
I Vee DATA CLOCK
e out ouT
21 GNO
PAUSE REC
neers 1K34A or
1K60A or
34!
50) OA90
SWITCHES
Q3i , 313,316
St. POWER ON - OFF REC R 2SD880 or 250313 0319, 320
53. LINE VOLTAGE SELECTOR AC220v ~ AC240V POWER ON/OFF
$301. MPX FILTER ON - OFF MUTING
$302 DOLBY NR ON - OFF
$303. DOLBY NR TYPE_B - TYPE C Q313% 316 Q320
oT : pee
S701: MODE = - pe) -O REMOTE CONTROL Ass'y FUNCTION SWITCH Ass'y RWS - 140 REGULATOR 2SAQ933LN or 2SAI0I5 or
$702: TIMER REC - OFF - PLAY x peter ll suena os _ Pond 2SAN27NC or
$801: INPUT SELECTOR LINE —MIC REMOTE CONTROL SOCKET Dae S901 202 5000, R= 800 en gr
REC MUT ON - OFF = . 3902
S201 BEC UE e sToP eee oer Seteodirag DIRECTION S8O7 Rew. 5905 pause S90: EC” S90!
$902. REC ON — OFF REC eS Rew INDEX SKIP stop fF PLay REC
$903:
PLAY
ON
-
OFF
ae
SCAN
TE
a
—
$4444444$<4-
4-4
$904: PAUSE ON - OFF ! | i 6 a ee a a 2
s905. FF ON - OFE |
i
S906: REW ON - OFF bated tg P P 120] ry
$907. sToP ON - OFF y ayfono
$908 DIRECTION ON - OFF
$909.
SKIP
ON
~
OFF
(aie,
(A
ee
eeeeneeern
S910: INDEX SCAN ON - OFF z ae ‘
[a
The
underlined
indicates
the
switch
position
6t3s
2
@
4
75
J ‘2 ae Se
8
'
This is the basic schematic chayram, but the actual circuit may vary
due to improvements in design Ma M3 Ne N6
—— a |
REEL MOTOR = CAPSTAN
CONTROL Ass'y CONTROL Ass'y

~
-
eee
ee
was
ae
ain
|
ae
ee
nein
onan
a
ea
he
oe
NR
ag
Sl
cacy
a
AO
SE
Re
ln
etl:
NI
tia
gE
=
|
tern
atte
‘
.
en
tee
Sel
ni
aw
esau
ag
aes
Wo
spare
eer
amnecanncaetaae
’
i
1
CT-6R/HE,
HB,HP
NOTE:
The
indicated
semiconductors
are
representative
ones
Dorey
Ass'y
(R)
only.
Other
alternative
semiconductors
may
be
used
and
ee)
. .
.
601-3
601-4
601-6
601-11
601-5
GOI-12
601-8
602-460I-2
6OI-!
601-7
are
listed
in
the
parts
list.
DOLBY
Ass’y
(L)
-
m
601-4
601
-10
601-6
[601-5
6GOI-1t
601-8
601-12
602-4
601-1
601-2
601-7
x8
|
Q
f)
cAoPHones
ee
desly
A
|
ne26
9
1
(272)
POWER
SUPPLY
CIRCUIT
FOR
HP
MODEL
| L
wettest
au
|
-6
=
Ty
t
*
mes
ae
DOLBY
Ass'y
(L)
TC4066BP
or
d
602-3
°
ee
eee
See
R
a
MB84066BM
or
eas
a
HD14066B
hoe:
Sue
302
pase
F
SWITCHING
22/50
18%
(172)
100
INDICATOR
Ass’y
9
8
RBS
lore
—_—
.
-
:
i
'
S3.LINE
VOLTAGE
77h
SELECT.
ee)
a
aan
W
“oY
teva
!
RSX
-045
‘
o
3
Be
5
14)
¥
LEDSIOS
2
Oo
(2)
(mii?
(REC)
(276)
(376)
(4/6)
(5/6)
hed
LEDNOS
307
(C307
3
©
(3)
(PAUSE)
poe
See
a
o
(4)
(SKIP)
DOLBY
¢
INVERTER
4
5—o
(5)
cs
ca
ern
|
TT
ST
ti
:
Ca)
(Pp
8023:
age
ie
©
wy
AC
POWER
CORD
E01107
ROG-029
©)
5)
eae
ce
1C303
PM3001
os07
O—
Pp
LEDNOI~
INO
400
MECHANISM
/
MUTING
CONTROL
2sc1815
a
Rya8
‘
&
font
twetacr
B
0333
,
335
28¢2021
oe
CAPSTAN
7
uepnios
usioao
>
we
=
CONTROL
Ass'y
fade
(00.8
8)
wn
2
=
es
‘Te
&
se,
|
REC
MUTE
1302
_
. .
1/50
NS
i,
(272)
725
0306,
307
|
10
bo}
©
(ype
oases
16
PLAY
MR
REC_MUT!
Na
y
LEOMOz
aes
ee
<
|_|
‘
6
ORR.
8
eee)
M2
asst
oe
Sih
STB
cg
vee
[I
ai
f
.
|
.
9330,
331
SWITCHING
382
100k
(DOLBY
C+
ON)
320
'
/
REEL
MOTOR,
"
CONTROL
Arty
|
&
i
|
POWER
SUPPLY
CIRCUIT
FOR
HB
MODEL.
RoEse
a
UL
SI
MS
Q327
SWITCHING
(DIRECTION
= ON)
1€304, 0324
BLANK
DETECTOR
$3:
LINE
VOLTAGE
SELECTOR
MS
MS
RSX
-
045
x40l:
MUTE
IN
GAIN
= 3
RSS
-033
RAW-161
6
ce
OATA
CLOCK
STB
LE
PAUSE
aie
Rane
ee
METER
DRIVE
Ass'y
RWX-500
LEVEL
METER
Ass'y
START
KEY
iv)
tt
—
_—
—
|_|.
GND
eet
Es,
pc,
TIMER
MECHA
erg
|
LEDICOI~
1016
(
:
Pk
i
Soy!
ay 7*
DIRECTION...
REC.
NOT
MEMORY
input
MODE
LEADER
MS
fooe
1
t
RAW-101
PauSE
REC
STOP
REW
|
FF
MUTE
HALF
REV
ERASE
STOP
r——
‘——1
PULSE
MUTE
2
A
L2]
jroo
2
26
28
=
24
ae
25.
29
at
34
35
32
33
39
16
4
-6
(6)
1c1001
LEDIOOS
AC
240°
--]--[--J--[--]--|--brf-—[--f
[e-l--[----
|
3
ro
si
i
Y
LO
LEOIOIO
SD
AC
POWER
CORO
H
Lep1011
nOG:-
032;
[4
F
|
1c305
PD6OOS
FUNCTION
CONTROL
a!
'
8 c
0,
$303-2
|
OFF
ON
$302-2
ope honemohemonontes
42345678
150
> o 6 6 oue ve 4 6— ——> adh occa
320 320
3 4 2 7 6 8 $91 7 3 8-2 “14523
8 308 a7 309 304 302 302
meee
1. RESISTORS: 4. OTHERS:
Indicated in 2, “W, +5% tolerance unless otherwise noted k : k{?, a> | Signal route.
Rep iers M = Ma, (EF): + 1%, (G) : +2%, (K) : 10%tolerance @ : Adjusting point. cone ArSTAN
4,
CAPSTAN
CONTROL
Ass'y
The
A
mark
found
on
some
component
parts
indicates
the
im-
NI
y
2. CAPACITORS: portance of the safety factor of the part. Therefore, when replacing,
Indicated in capacity (uF) ‘voltage (V) unless otherwise noted p > pF be sure to use parts of identical designation.
indication without voltage is 50V except electrolytic capacitor.
3 VOLTAGE
“] OC voltage (V) at no input signal
/
8
g
10
IC1001 , 1062 '
IR2EO2
LEVEL METER RIVER,

7 8
Dolby NR Assembly (RWX-597)
181
3202)
2S C2639 NO oReteneenmen
Amplifier Assembly (RWF-105)
Q513 Q505 Q503 Q501 Q507
vVRSO1 L503
Q508 Q502 Q504 Q506 Q514
vR502
est : : P
© Revs 470K C517 0,024 Eth
hye i Pes Ee aE
ECTS |] we
0506) FC NS OF
182473 or US1040
Jack Assembly (RWX-575)
1 aweeee 80) 804"2SC1740LN br 256202
RO ER CN Te Of 2501815 or 2SC2634N
Qsit
Q509
L504 L501
1504. momo" R548
Pee ee ey el
Qs10
Ic501 Qs12
L502
0K
@
PIC SOWNIM 45580 or
a ANG B52 nt BAS
2SA933LN
2SC1740LN
2SA937
2S8C2021
2SA1015
2SC1815
2SC2240
2SA1127NC
2SC2634NC
2SC1383NC
2SC2060
10
tT
ae ical 28C2497 leer M5218L
Type No.
Lot No hre
bre
E
© 8 EC ;
IR2E02
ne PA2007
PA2009
2SC2673 PA3010
Type No hFE Type No Lot No
Eces Ee
c
)
Lot No
Type No
hee
2SD313
PA2012
2SD880
€
c
8
Type No 2SD882
hee Lot No
€
c
8
hee.
Type
No
2SD1189
PM3001
Lot No
E
c
8
PA3012
Taps. Ne AN6552 WU
BA4558
hre Fot'No NJM4558D
index
€
c
10 11
12
(HMMWV
10

3. SCHEMATIC DIAGRAMS
(KU AND KC TYPES)
11
eee: Ge!
ES Dd
RWX-577 (D,0/G) (a es tL j— EB
EE i LOST OST
RWX-595
(HE,HB,HP)
‘
|
MOTHER Ass’ y (1/3) RWX-593 (KC,KU) { | ERSaecy CRA Cae [Fa ee en eS
f 1 REC 318M M305) 9305 Paw c30e = D308 °
4
i
SWITCH
Ass*y
ESO
cee
ci
2
ae
o—/
|]
HeaopHones
LINE cH . ne Q302~ 307 9
INPUT a EC REC re 2SCI740LN-R or
= :
$704:
MODE
Pe
.
28C2024-
Ror
7
'
RSB- 030 } R 28C8IS—- Aa or A bers ore } Yore
' 2SC2634NC-R
ry
sue
su-6
MOTHEF
PB
INPUT SELECTOR 2) ea ae
RKEN-O75
id
c
ee
ieee
Be
008
a3
aB Cc o € ie J H tog ry
(0309 182473
3] Pe see oa Pa pe 3oq [ae Bis or US1040
a Pate mn mdm = dd > AIG) me heads
< 307-14 |]
: 9340 2S0880- 0
2284 or 280313 -D og
REGULATOR
VA7OI: INPUT
RCV- O96
re HES
oF
ceIz = Q80I~ 804
$302
Q306 307:
2SCIT40LN-R or OOLeY NR REC MUTI
2$C2021-R or RSG -126
2SC1B1S-Y or
2SC2634NC-R |
$301: MPX FILTER
RSG-126
No as A333! R343
NO 19
oe
Sore
[
‘sere
220725
an
4am
mec Nit
Q327 2SCIT40LN- Ror
RWF-101
(D,0/G)
.
0310
~
311,
313
44,340
28c2021-R
or
2SCIBIS-Y
0
AMP
Ass’y
RWF-105
(KC,
KU,
HE,HB,HP)
soy
30:
03
¢
($2473
or
US1040
2SC2634NC
-R
----1UL503 iesor: 308,309 2S01189-9 or
REC EQUALIZER AMP
2S$C€2497-Q or 2S0882-Q
OSC
0513, 514 Q311: REGULATOR
1 SWITCHING CHS mez
a (RECON)
on ees
hte» ih csze
47/30
| fy, ag
HEAD
Ass?
a
T
0.33/50
AxX-333° : 9 so! Q505~ 514 iy
| v H 2S8C2240-GR 2SCI74OLN-R or
xh
|
EQUALIZER
AMP
2sc2021-R
or
nyez
2SCBIS-Y
—
or
root
ines?”
po
=
RCH 2SC2634NC-R BA45S8
a2 14
0501 1S2473 or R90! 802 _P.8 LEVEL ADY
Ma usio4o0 RCP - 008 0314, 315, 319
nas 2SCI7T40LN-R or
'
350;
2SC2634NC-R
or
* 2SCI815-¥ oF
528 28C2021 -R
C526 z
S
Rees
Jed
0323,325
($2473 or US1040
> > 830
| 3
'
Hate fe)
-_=>S CO
qi ®
¢ 2Z0303,304 ra
ge ROS. 6EB2 2726
SWITCHES
st
POWER
ON
-
OFF
*
aa
$301
MPX
FILTER
ON
—
OFF
j
i
$302
OOLBY
NR
ON
—
OFF
:
=
$303
DOLBY
NR
TYPEB
—
TYPEC
REMOTE
CONTROL
Ass’y
FUNCTION
SWITCH
Ass'y
(
—__+—3_|
ee
oe
—w
a
REMOTE CONTROL SOCKET
AKP-222 $203,905. 908° i eras a ae ate Q311, 313, 316 Lf __}__} | + +—4
STOP a 19,
= see yl" at adm, BS See SPO mtee Be oe he 308005 8 of | owe on.oeF =
$701
Move
=-
=
pen
Ce
mae
SCAN
SKIP
Rew
PAUSE
PLAY
REC
MUTE
MUTING
fae
$702 TIMER REC - OFF - PLAY ' ; i =
:
.
1
O313
~
316
9320
sgot
INPUT
SELECTOR
LINE
Mic
C5
>
oP
REGULATOR
2SA933LN-R
or
25A937-R
or
+5901 REC MUTE ON — OFF : R
pets
ey
SN
aa
O30
2SC2060-Q
o
2SAIOIS-Y
of
2SAlIZ7NC-
R
Se ee mart
e505
POAY
ON
~
OFF
2SC2673-Q
of
2SC1383NC-R
rae
AY
0320
$904 PAUSE ON - OFF @{)- © OO OO OOOO) ew 182473 of usio4o
Ss FF ON - OFF 4 bn. a $ ee -—444444444- 4
sag
‘OFF
6t3
2.0
a
$906
REW
ON
-
OFF
-6
t23e5e7re
3s
4
$907 sToP ON —- OFF e304
5908
DIRECTION
ON
-
OFF
2
=
=
:
$909
SKIP.
ON
~
OFF
zo
W
0©
9 8
F
6
$s
4
3
2
4
$910 INDEX SCAN ON - OFF
eee ee
The
underined
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N
CAPACITORS
Indicated in capacity (i. F} voltage (V) unless otherwise noted p : pF
Indication without voltage 1s 50V. except electrolytic capacitor
rm) VOLTAGE
V2] DC voltage fv) at no input signat
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OTHERS,
wm Signal route
@ Adjusting powt
The A\ mark found on some component parts indicates the im
portance of the safety factor of the part. Therefore, when replacing,
be sure to use parts of identical designation.
MOTHER Ass’y (318-1 ~ 42)
SWITCHES
S101’ CASSETTE HALF DETECTOR NO_HALF ~ HALF
$102: ERASE PREVENT DETECTOR (FWD) HOLE - NO HOLE
S103. FWO/REV SELECTOR FWD - REV
S105: AUTO TAPE SELECTOR NORM — HIGH
S106: AUTO TAPE SELECTOR/CLEANING CrO2/0N — METAL /OFF.
The underlined indicates the switch position.
This is the basic schematic diagram, but the actual circuit may vary
due to improvements in design.
NOTE;
Play back signal route. ———
Recording signal route
a a
YPE)
IC60IN. 604, Q601
DOLBY NR (BAC T
CAPSTAN MOTOR
CON Ass'y
Fo,con. Age! RKX = 335 pee A sol R
602,605,
606
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2
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REEL MOTOR CONTROL Ass’y RWX-494
VR202 SPEED ADJ |
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RCP - 086
R207
100k
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1008 32
VR20l TAKE-UP TORQUE
ADJ
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PA 2009
MOTOR CONTROL,
RCP - 009
R205
308
C209
100/63
REEL MOTOR ORIVE Ass’y
MOTHER Ass’y
(316 -1N5 )
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28C 1173 COW Ass'y
0205 H25t~ 254 Ba ose
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COL Ass'y
RAK ~ 336

RM CONTROL Assty RXX-389
RM Full Assembly B (RXX-389)
CT-6R/KU,KC,HE,HB,HP,D,D/G
RESISTORS
Note:
When ordering resistors, convert the resistance value
into code form, and then rewrite the part no. as before.
Mark Part No.
RD%PM OOO J
Symbol & Description
R251—R253, R255, R256
CM Control Assembly (RWX-686)
SEMICONDUCTORS
Mark Part No.
wk PA2011
kk PA2012
wk 2SC1815
(2SC2634NC)
(2SC1740LN)
wk 2SA934
xk =2SD882
(2SC2497-R)
(2SD1189)
* WO03B
(WO3C)
* RCX-010
(RCX-012)
SWITCHES
Mark Part No.
*k RSG-116
** =RSH-063
CAPACITORS
Mark Part No.
RCE-229
CEA R47M 50
CEA 100M 16
CEA 100M 25
CQMA 273K 50
RCE-228
CKDYF 1022 50
bn
a
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SEMICONDUCTORS
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Part
No.
Symbol
&
Description
enna
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|
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1C201
'
wk
PA2010
1C202
1C201
PAZ009
kk
2SA934
Q201
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PAZ010
|
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1
RM
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Ass*y
RXX-363
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GND
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Sue linhdomt
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|
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|
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Q202
'
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|
(2801189)
|
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wk
2SC2458
0205
i
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2801173
Q204
MOTHER
ASS'Y
|
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;
CAPACITORS
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Mark
Part
No.
Symbol
&
Description
1
4
55C2458
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Q204
GND
Vee
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HA-
HO-
HB+
LB-
LA-
COM
CEA
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35
C201
’
C204,
C21
2
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1
43
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17 19
20
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50
C205
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CEA
2R2M 50
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2
J
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CEA
101M
6R3
C209
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CEA
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35
C202,
C203
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COMA
373K
50 C213
|__|
CKDYF
103Z
50
C207
CKDYF
473Z
50
C215
‘eras ene
RESISTORS
Note:
When
ordering
resistors,
convert
the
resistance
value
CM
CONTROL
into
code
from,
and
then
rewrite
the
part
no.
as
before.
Ass'y
RWX-
686
Mark
Part No.
Symbol
&
Description
*
RCP-009
VR201
Semi-fixed
(22k-B)
C
*
RCP-056
VR202 Semi-fixed
(100k-B)
RD“PMOOO
Ss
R201,
R204,
R205, R207,
R209
RD*%PS
1R8J
R203
OTHERS
MOTHER
Ass’Y
(317-1~11)
:
Mark Part No.
Symbol
& Description
7
REE-051
Spacer
5
rere!
RKH-005
Transistor
holder
Ic1o1
PAZON
RBA-026
Screw
1CA02
PA2ZOH2
.
Ol,
ato2
2scia1s
Ld,
or
25C2634NC
101,402
WO3B or WO3C
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o
oa
meee
4S2473
of
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sits
RM
Assembly
(
R
XX-363)
or 28¢2497
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s08°
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or
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RCE-229 VRIOH!
ads
SiGe
aes
Gis
Reese
ORCL
mM
SEMICONDUCTORS
Mark
Part
No.
Symbol
&
Description
SWITCHES,
—__
cM
CONTROL
Ass'y
i
D
t
$102:
ERASE
PREVENT
DETECTOR
(
FURY
HE
HOLE
HOLE
*
RCX-010
H251—H254
Hall
device A
S103
FWO/REV
SELECTOR
FWD
—
REV
(RCX-012)
(Hall
device
C)
i
R -CrO2
$108
AUTO
TAPE
SELECTOR
‘CrOr
~
METAL
*
TLN-104
D251
The underlined indicotes the switch position
? 3 15
CKDYF 1032 50
RESISTORS
Note:
Mark
x
Symbol & Description
1C101
1€102
Q101, Q102
Q104
Q103
D101, D102
H101, H102 Hall device A
(Hall device C)
Symbol & Description
$101, $102, $105, $106
Push switch
$103 = Slide switch
Symbol & Description
C101 — Film (0.0027)
C107, C109, C110
C104, C106
Cii1
C102
C103
C105
C108, C112
Film (0.0082)
When ordering resistors, convert the resistance value
into code form, and then rewrite the part no. as before.
Part No.
RCP-117
RN%“PQ 203F
RD“%PS 2R7J
RD“PM OOO J
Symbol & Description
VR101 Semi-fixed (15k-B)
R100
R111
Other resistors
16

CT-6R/KU,KC,HE,HB,HP,D,O/G &)
17
CM CONTROL Ass’y
Ic101
Q101, 102 Q103
2SC1815-YorGR
fOr 2SC2634NG-R orS
or 2SC1740OLNSRor S Qio4
gm C10
= Icio
RWX-686
Q1ot Ic102 aioe Q104
VRiO1
0862*QorP
H2SC2497-R
2S011689-QorR
25A4934-QorR
at
Y PAZ O12
4m 0101,102
WwO3B or WO3C
Q103
RM DRIVE Ass’y RXX-363
seemmmimnenainnee rarnvens me ron - aa
wo
H251
254
REX-O108
1
fos
SOSSEeTOr ROX O12 f ¢
RM CONTROL Ass’y RXX-389
TC201 Q204Q205
vR2o1 vR202
Q201
Q202

AS
7.P.C.
BOARDS
CONNECTION
DIAGRAM
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_ CT-6R/KU,KC,HE,HB,HP,D,D/G
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POWER SUPPLY CIRCUIT FOR HE TYPE POWER SUPPLY CIRCUIT FOR HP TYPE
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SELECTOR
ASK- 045
POWER SUPPLY CIRCUIT
POWER SUPPLY CIRCUIT FOR 0.0/G TYPE
MOTHER Ass'y
FOR HB TYPE
MOTHER Ass'y
RWX-595,
MOTHER Ass'y
RWX-577
2? 3 19.

12.1.4 Fast forward and rewind rotational speed
1.
adjustment
Connect a frequency counter between the FG
and GND terminals on the reel motor control
ass’y (see Fig. 12-5).
Set to forward direction, and switch to fast
forward mode.
Adjust the frequency counter reading to 72Hz
+2Hz by means of VR202.
Switch to rewind mode, and check that the
frequency counter reading lies in the 72Hz
+5Hz range.
Capstan motor control
assembly
VR202
VR201
re
Reel motor <
FG |iGn ss.
control assembly a,
<7] Connect the
“> * frequency countor
Fig. 12-5 FF/REW Rotating speed adjustment
12.1.5 Playback mode winding torque adjust-
1.
ment
Set to forward direction, mount a cassette-
type torque meter, and switch to playback
mode.
Adjust the winding torque to 45g.cm +5g.cm
by VR201.
Set to reverse direction.
Check that the winding torque is 45g.cm +10g.
cm.
Torque meter
Fig. 12-6 Take-up torque adjustment
CT-6R/KU,KC,HE,HB,HP,D,D/G
12.1.6 Tape speed adjustment
L
2.
Connect the frequency counter to the OUT-
PUT terminals.
Set to forward direction, load a STD-301 test
tape wound to the start of the tape, and
switch to playback mode.
Adjust the frequency counter reading to
3005Hz +20Hz by VR101.
Set to reverse direction, wind the test tape to
the start of the tape, and switch to playback
mode.
Check that the frequency counter reading lies
within the 3005Hz +20Hz range.
Reel motor control assembly
Capstan motor
control
assembly
Fig. 12-7 Tape speed adjustment
12.1.7 Fast travel torque check
1.
Set to forward direction, mount a cassette-
type torque meter, and switch to fast forward
mode.
Check that the fast forward torque is within
the 100g.cm +30g.cm range.
Switch the mode to rewind, and again check
that the rewind torque lies within the 100g.cm
+30g.cm range.
12.1.8 Back-tension torque check
Set to forward direction, mount a cassette-
type torque meter, and switch to playback
mode.
Check that the supply reel back-tension lies
within the 3.5g.cm +1.5g.cm range.
Reverse the direction.
Check that the supply reel back-tension again
lies within the 3.5g.cm +1.5g.cm range.
21
|
CT-GR/KU,KC,HE,HB,HP,D,D/G
12. ADJUSTMENTS
12.1 MECHANICAL ADJUSTMENTS
12.1.1
a
2.
Pinch roller pressure adjustment
Set to forward direction, and switch to play-.
back mode without loading a cassette half.
Using a tension gauge as shown in Fig. 12-1,
gently press against the pinch roller arm.
The tension gauge reading should lie between
250g and 400g at the moment that the pinch
roller is separated from the capstan, and the
capstan stops rotating.
If the reading lies outside the above range,
replace the pinch roller pressure spring.
Set to reverse direction and measure the pinch
roller pressure for the pinch roller on the other
side in the same way as described above.
Tension gauge
(Part No. GGK-047)
Erase head
Capstan
) Ve
Fig. 12-1 Pinch roller pressure adjustment
Pinch roller
12.1.2 Preliminary azimuth adjustment
1.
2.
20
Set to forward direction, and switch to stop
mode.
Using a screwdriver as shown in Fig. 12-2,
adjust gap A between the housing and the
revolving base to 1.5mm by turning screw
Set to reverse direction.
Using the screwdriver again, adjust gap B
between the housing and the revolving base to
1.5mm by turning screw @ .
Rotating base
mg REC/PB head
Fig. 12-2. Azimuth adjustment point
Fig. 12-3 Azimuth preadjustment
12.1.3 Tape travel adjustment
1.
y
on
Set to forward direction, load a mirror-equipped
cassette, and switch to playback mode.
Adjust nut @ to ensure that no tape curling
occurs in the guide section of the recording
and erase heads as shown in Fig. 12-4.
Set to reverse direction.
Adjust nut @ to ensure that no tape curling
occurs in the guide section of the recording
and dummy heads.
Check that there is no tape curling during
repeated forward and reverse tape _ travel.
Check point (guide section)
Mirror-equipped
cassette half
USE A
Peet et det
Fig. 12-4 Tape travel adjustment

CT-6R/KU,KC,HE,HB,HP,D,D/G
12. REGLAGE
12.1 REGLAGES MECANIQUES
12.1.1 Réglage de la pression du rouleau de
serrage
1. Faire marcher le magnétophone en direction
avant et commuter le mode de lecture sans
insérer de cassette.
2. Pousser doucement contre le bras du rouleau
de serrage avec un étalon de tension comme
indiqué
Fig.
12-1.
La
lecture
doit
se
situer
entre 250 et 400gr. au moment ot le rouleau
de serrage est séparé du cabestan, et ot le
cabestan se arréter 4 tourner.
3. Si la lecture se situe hors de ces limites, rem-
placer le ressort de serrage.
4. Faire marcher en direction opposée et mesurer
la pression du rouleau de serrage de l’autre coté
de la méme maniére que précedemment.
Indicateur de tension
(Piéce n° GGK-047)
Téte d'effacement
Cabestan
Xa
Galet-presseur
mss
Fig. 12-1 Réglage de Ja pression du rouleau de serrage
12.1.2 Réglage préliminaire d’azimuth
1. Mettre en marche le magnétophone vers
Vavant, en mode d’arrét.
a, Au moyen d’un toumevis, comme il est montré
Fig. 12-2 régler l’intervalle A a 1,5mm. entre le
logement et la base tournante, en tournant la
vis@.
3. Faire marcher en direction inverse.
4. Au moyen du méme tournevis, régler l’inter-
valle B 4 1,5mm entre le logement et la base
tournante, en tournant la vis @.
Téte de reproduction/
-- Base rotative enregistrement
Fig. 12-2 Réglage préliminaire d’azimuth
22
Fig. 12-3. Préréglage d’azimuth
12.1.3 Réglage du défilement de bande
1.
Faire marcher en direction avant et insérer une
cassette munie d’un mirroir, puis commuter en
mode de lecture.
Régler l’écrou @ pour assurer qu’entre les
guides et les tétes d’enregistrement et d’ef-
facement, la bande ne se gondole pas. Voir
Fig. 12-4.
Faire marcher en direction opposée.
Régler l’écrou @ pour assurer qu’entre les
guides et la téte d’enregistrement et la téte
factice, la bande ne se gondole pas.
Vérifier qu’il n’y a pas de gauchissement de la
bande en répétant plusieure fois le défilement
dans les deux sens.
Point de vérification (Section guidée)
Fig. 12-4 Réglage du défilement de bande

8 g 10 11 0 aM
REEL MOTOR CONTROL Ass'y
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VR201 VR202
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