Pioneer CT-660BK User manual

W) PIONEER’ W23
Service
REPAIR
&
ADJUSTMENTS
ORDER
NO.
Tee aaa = ARP-796-0
STEREO CASSETTE TAPE DECK
CT-GGO(BK),CT-660
CT-S1I1IBK),CT-S11
(KU type only) (KU type only)
CT-S11 is the same as the CT-660 except for the exterior design .
Both models CT-660 and CT-S11 come in two colors, black and silver.
As to the circuit descriptions, please refer to the CT-960 service manual (ARP-788-0).
Models CT-660 (BK: black) and CT-660 (silver) come in versions distinghished as follows:
Applicable
model
7
ae
Power requirement
Destination
CT-660
(BK)
CT-660
10) AC120V only U.S.A,
AC120V only Canada
AC120V/220V/240V (switchable) General market
AC220V (240V)* European continent
AC240V (220V)* United Kingdom
AC240V (220V)* Australia
*Change the primary wiring of the power transformer.
e This service manual is applicable to the KU, HEM, HB and D types.
e As to the HEM, HB and D types, please refer to pages 40 — 43.
© As to the HP type, please refer to the additional service manual (ARP-797-0).
e As to the KC type, please refer to additional service manual (ARP-798-0).
© Ce manual d’instruction se fefére au mode de réglage, en francais.
e Este manual de servicio trata del métado adjuste escrito en espafiol.
PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153, Japan
PIONEER ELECTRONICS [USA] INC. P.O. Box 1760, Long Beach, California 90801 U.S.A.
TEL: (BOO) 421-1404, (BOO) 237-0424
PIONEER ELECTRONIC [EUROPE] N.V. Keetbergiaan 1,2740 Beveren, Belgium TEL: [phone]:08
PIONEER ELECTRONICS AUSTRALIA PTY.LTD. 178-184 Boundary Road, Braeside, Victoria 3195, Australia
TEL: [phone]
YH© FEB. 1985 Printed in Japan

CONTENTS
1. SPECIFICATIONS .................000.. 3
2. FRONT PANEL FACILITIES ............. 3
3. DISASSEMBLY ......... 0.0.00 cee eee 4
4. PARTS LOCATION ...........-.0-.000. 6
5. ELECTRICAL PARTS LIST .............. 8
6.-PACKING 2x05. cask eee eda haa eae SAGA 11
7, P.C. BOARDS CONNECTION DIAGRAM ..... 12
SAFETY INFORMATION
1. SAFETY PRECAUTIONS
The following check should be performed for the
continued protection of the customer and service tech-
nician.
LEAKAGE CURRENT CHECK
Measure leakage current to a known earth ground
(water pipe, conduit, etc.) by connecting a leakage current
tester such as Simpson Model 229-2 or equivalent between
the earth ground and all exposed metal parts of the appli-
ance (input/output terminals, screwheads, metal overlays,
control shaft, etc.). Plug the AC line cord of the appliance
directly into a 120V AC 60Hz outlet and turn the AC
power switch on. Any current measured must not exceed
0.5mA.
Leakage
current
tester
Reading should
not be above
0.5mA
Test all
exposed metal
surfaces
2-wire cord
Also test with
O plug reversed Earth
(Using AC adapter ‘ ground
plug as required)
AC Leakage Test
8. SCHEMATIC DIAGRAM ................ 15
9. EXPLODED VIEW.................00.. 18
10. ADJUSTMENTS ..........0 000.00 cee 25
REGUAGES*§: 4c occ a Beh oa actors 30
AJUSTES: o2-o6/s faces s.0.b eg wae es 35
11. SUPPLEMENT FOR HEM,
HB-AND: D TYPES). .c025 ebay oe ees 40
ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A PO-
TENTIAL SHOCK HAZARD AND MUST BE COR-
RECTED BEFORE RETURNING THE APPLIANCE
TO THE CUSTOMER.
2. PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in the appliance
have special safety related characteristics. These are often
not evident from visual inspection nor the protection
afforded by them necessarily can be obtained by using
replacement components rated for voltage, wattage, etc.
Replacement parts which have these special safety charac-
teristics are identified in this Service Manual.
Electrical components having such features are identified
by marking with a4 on the schematics and on the parts
list in this Service Manual.
The use of a substitute replacement component which
dose not have the same safety characteristics as the
PIONEER recommended replacement one, shown in the
Parts list in this Service Manual, may create shock, fire,
or other hazards.
Product Safety is continuously under review and new
instructions are issued from time to time. For the latest
information, always consult the current PIONEER Service
Manual. A subscription to, or additional copies of, PIONEER
Service Manual may be obtained at a nominal charge from
PIONEER.

QUESTIONNAIRE MODEL
One Model per questionnaire
Dear Servicer,
Thank you for your cooperation in the post-sale service of Pioneer products.
This questionnaire is used as a tool to improve the serviceability of our products and service manuals.
Please evaluate this model and service manual by answering the following questions. Your ideas may be
realized in our future products. Your answers will be appreciated. Thank you.
PIONEER ELECTRONIC CORP.
a
. Nakagawa, Manager, Service Section, International Division
SERVICING
EVALUATION
Circle
applicable
number:
Good
Fair
Poor
Disassembly
/Re-assembly:
|
2
2 3
*4
*5
b. Circuit Checks: 1 2 3 *4 *5
—
c. Replacement of Parts:
d.
Adjustment
(s):
1
2
3
*4 *5
* If (4) or (5) was circled, please be specific.

e. Your advice, opinion or ideas related to servicing this product.
2. SERVICE MANUAL EVALUATION
a. Circuit & Mechanism Description
b. Circuit Diagram
3. OTHER
Please describe other areas of servicing which you may find difficult.
Completed by : Date :
Company Name :
Address :
City/State/Zip :
Please send this form filled to the distributor in your country.

1. SPECIFICATIONS
PV STOOD oe he AES Pm Goere tee RO 4- track, 2-channel stereo
Heads ....... “Hard Permalloy” recording/playback head x 1
“Ferrite” erasing head x 1
Mth . discs e she tes. Bled ios id BE ates DC servo motor x 1
Bla ods dey rset wed No more than 0.07% (WRMS)
No more than +0.19% (DIN)
Fast Winding Time . . . . Approximately 90 seconds (C-60 tape)
Frequency Response
~20dB recording:
Normal tape... ....... 020000 e 30 to 14 000Hz
Chrometape ..........-.00+0008- 30 to 15 000Hz
Metal tape... 2. ee ee ee 30 to 15 000Hz
Signal-to-Noise Ratio
Dolby NR GRE: c4 ac5 ee oo iw ek we we More than 57dB
Noise Reduction Effect
Dolby B-type NR ON
Harmonic Distortion...........
Input
(Sensitivity)
MIC (L,R)
Ot ih ai As Me telsialhe More than 10dB (at 5kHz)
No more than 1.5% (OdB)
Oe Bae BARE ete ad 0.3mV, 6mm diam. jack
(Source impedance 60022)
LINE (INPUT)... 0... 0.000 2 ee ee ee eee 50mV
(Input impedance 68k2)
Output (Reference level)
LINE (OUTPUT) .......... 0.00 2 eee eee 316mV
(Output load impedance 4k2)
2. FRONT
@ RESET button
CT-660,CT-S11
Furnished Parts
Operating instructions... 2... . 2. ee es 1
Connection cord with pin plugs
Subfunctions
Cue and Review function
Doiby NR system (B type)
3 position tape selector (NORM/CrO2/METAL)
Oi! damped eject function
Full automatic stop function
Timer stand-by function
LED tevel meter
One-touch recording
Miscellaneous
Power requirements
KU,KC models... . 2... 0... ee eee AC120V, 60Hz
HEM model ............-.-.2 0000 AC220V, 50/60Hz
HB, HP models ...........0.00000% AC240V , 50/60Hz
D, D/G models . . . AC120V/220V/240V, 50/60Hz (switchable)
Power Consumption
KU, KC models: v5.6... 3 95 S844 oe alea Nal bare els 10 watts
HEM, HB, HP models ..........0.0 005 eee 10 watts
De. D/Grodels: 33.2 ok ahve 5 Be es oa ee ek eS 8 watts
Dimensions ............ 420 (W) x 109 (H) x 222 (D) mm
16-9/16 (W) x 4-5/16 (H) x 8-12/16 (D) in
Weight (without package) ..-..........05 3.2kg (7 Ib 1 oz)
NOTE:
Specifications and the design subject to possible modifica-
tions without notice due to improvements.
PANEL FACILITIES
@ REC indicator
@ TAPE COUNTER
@® EJECT button
@ Level meter
REC LEVEL control
= (8
Sai 1
= i key) oor y
rT
oo i
moo Casta oo
7 7
a
@ POWER switch
© Operation switches
° (Rec)
< (REW)
> (Play)
2 (FF)
> (Stop)
oo (Pause)
© MIC jacks
@ DOLBY NR switch
@
TAPE
SELECTOR
switches
NOTE:
The unit’s POWER switch is geared to selecting the transformer’s
secondary and so even at the STAND-BY position, the unit’s cir-
cuitry will work as long as the power cord is connected to power
outlet. Disconnect the power cord from the power outlet when
you do not plan to use the unit for a long period of time.

CT-660,CT-SI
3. DISASSEMBLY
Disassembly of Tape Transport Unit Motor Replacement
1. Remove the bonnet. 1. Remove the tape transport unit from the deck.
2. Disconnect the motor jead wires from the motor.
Undo the two screws
in the rear panel
2. Temporarily pass the counter belt around a chassis 3. Remove the drive belt B and then remove the drive belt A.
hook.
Drive belt A Oo
Drive belt 7
3. Open the cassette. door. 4. Temporarily pass the capstan belt around a chassis boss.
Counter blet
4. Undo the four screws securing the tape transport unit,
pull the unit out towards the rear.
Capstan belt

CT-660,CT-S11
Capstan Belt Replacement
5. Remove the flywheel holder plate. 1. Remove the tape transport unit from the deck.
2. Remove the drive belt B and then remove the drive belt A.
3. Temporarily pass the capstan belt around a chassis boss.
4. Remove the flywheel holder plate.
5. Replace the capstan belt.
Undo the three
securing screw
6. Replace the motor assembly
Capstan belt
Undo two securing
screws and replace
the motor assembly.
6. Reassembly in the reverse order.
. Pass the belt around the pulley, and re-assemble in the
reverse order.
. Adjust tape speed according to the '‘Tape Speed
Adjustment” procedure.

CT-660,CT-S11
4. PARTS LOCATION
Parts without part number cannot be supplied.
The /\ mark found on some component parts indicates the importance of the
safety factor of the part. Therefore, when replacing, be sure to use parts of identical
designation.
e For your Parts Stock Control, the fast moving items are indicated with the marks
wk and *.
wk GENERALLY MOVES FASTER THAN *.
This classification shall be adjusted by each distributor because it depends on model
number, temperature, humidity, etc.
Front Panel View (CT-660)
Door
RNM-060 (BLACK)
RNM-061 ((SILVER)
Door panel
RAH-665 (BLACK without D type)
Tape counter
RAW-211
Bonnet case
RNA-730 (BLACK)
RNA-731 (SILVER)
RAH-666 (SILVER)
RAH-661 (CT-660 [BK]/D)
Display panel
Meter panel
RAH-639
RAH-637 (BLACK without D type)
Knob (EJECT)
RAC-596
RAH-638
(SILVER)
Knob
(POWER)
RAH-650
(CT-660
[BK]/D)
RAC-598
Knob (REC)
RAC-529 (BLACK)
RAC-527 (SILVER)
Knob (REW)
RAC-530 (BLACK) : :
RAC-528 (SILVER)
Knob (PLAY)
RAC-525 (BLACK)
RAC-523 (SILVER)
Knob (FF)
RAC-532 (BLACK)
RAC-531 (SILVER)
Knob (STOP)
RAC-534 (BLACK)
RAC-533 (SILVER)
Front Panel View (CT-S11)
Front panel
RAH-711 (BLACK)
RAH-710 (SILVER)
Knob (REC LEVEL)
RAC-597
Phone jack with switch (MIC)
RKN-092
(RKN-087)
Knob (DOLBY NR)
RAC-577
Knob (TAPE SELECTOR)
RAC-577
Knob (PAUSE)
RAC-526 (BLACK)
RAC-524 (SILVER)
Door
RNM-062 (BLACK)
RNM-063 (SILVER)
Tape counter
RAW-211
Bonnet case
Door
panel
RNA-730
(BLACK)
RAH-667
RNA-731
(SILVER)
Knob
(EJECT)
Met
|
RAC.596
RAH-639
Knob
(POWER)
Display
panel
RAC-598
RAH-650
Knob
(REC)
RAC-529 (BLACK)
RAC-527 (SILVER)
Knob (REW)
RAC-530 (BLACK)
RAC-528 (SILVER)
Knob (PLAY)
RAC-525 (BLACK)
RAC-523 (SILVER)
Knob (REC LEVEL)
RAC-597
Phone jack with switch (MIC)
RKN-092
(RKN-087)
Knob (DOLBY NR)
RAC-577
Knob (TAPE SELECTOR)
Knob (FF)
RAC-
RAC-532
(BLACK)
ee
RAC-531 (SILVER) Knob (PAUSE)
Knob (STOR)
RAC-534 (BLACK)
RAC-533 (SILVER)
RAC-526 (BLACK)
RAC-524 (SILVER)

CT-660,CT-S11
Rear Panel View
/\ Strain relief
REC-395
Terminal
(LINE)
pA
AC
power
cord
RKB-023
RDG-048
Top
View
/\
®
Power
transformer
(120V)
RTT-437
+k
Motor
i
Main
unit
RXM-130 Tg
/\
te
Push
switch
(POWER)
YRunié
RSA-063
Tape transport unit

CT-660,CT-SI1
5. ELECTRICAL PARTS LIST
NOTES:
e When ordering resistors, first convert resistance values into code form as shown in
the following examples.
Ex.1 When there are 2 effective digits (any digit apart from 0), such as 560 ohm
and 47k ohm (tolerance is shown by J = 5%, and K = 10%).
5602 56x 10' 561
47kQ 47 x 10° 473
0.52 ORS se Be ees
12 O10! osomieiis cies
Ex, 2
tors).
5.62k2 562x 10' 5621
RD*PS HEM
RD*PS AMG
RN2H ORE K
RSIPOMOK
When there are 3 effective digits (such as in high precision metal film resis-
RN%SR BAA) F
e The £\ mark found on some component parts indicates the importance of the
safety factor of the part. Therefore, when replacing, be sure to use parts of identical
designation.
e For your Parts Stock Control, the fast moving items are indicated with the marks
wk and *.
wk
GENERALLY MOVES FASTER THAN x.
This classification shall be adjusted by each distributor because it depends on model
number , temperature, humidity, etc.
Miscellaneous Parts
P.C. BOARD UNITS
Mark Symbol & Description Part No.
Main unit non supply
Indicator unit
VR unit
Power switch unit
OTHERS
Mark Symbol & Description Part No.
A\ *& 71 Power transformer (120V) RTT-437
A AC Power cord RDG-048
A Strain relief (for AC power cord) REC-395
Tape counter RAW-211
wk Motor RXM-130
wk =~ REC/PB head RPB-122
* ~~ Erase head RPB-085
wk = S11 Lever switch (Play) RSN-034
wk = $2 Spring switch (FF) RSN-035
Main Unit
SEMICONDUCTOR
Mark Symbol & Description Part No.
wk 0301 HA12045
wk = 0302 M5218L
wk = Q101, Q102, 0201, A202 2SC2240
wk = 103 — 0107, A203 — 0207 28C1740S
**k = 0306, 0307 2SC1815
A\e* 303, 0304 28D 1406
kk 305 2SA933S
A. * D301 — D304 1SR35-100A
* D305, D309 182473
Mark Symbol & Description Part No.
/A\ * D306, D307 RD13EB1
(RD13EB2)
(MTZ13A)
(MTZ13B)
* D308 RD5.1EB2
(MTZ5.1B)
SWITCHES
Mark Symbol & Description Part No.
wk = $301 Slide switch RSH-078
kk = §302, S303 Push switch assembly RSG-174
kk = S304 Push switch RSG-175
COILS AND FILTERS
Mark Symbol & Description Part No.
L301 OSC coil RTD-032
L102, L202 Trap coil RTF-152
L101, L207 MP x filter RTF-138
L103, L203 Peaking coil RTF-129
CAPACITORS
Mark Symbol & Description Part No.
C120, C220 CEAR27M50
C125, C225 CEJAR33M50
C121, C221 CEAR82M50
C113, C114, C118, C122, C124, CEA010M50
C130, C133, C213, C214, C218,
C222, C224, C230, C233
C117, C217, €319 CEA4R7M50
C103, C203 CEANLO10M50
C107, C109, C111, C126, C207, CEA100M16
C209, C211, C226, C307
C104, C106, C204, C206, C306 CEA330M16
C303 — C305, C318 CEA101M16
C302 CEA101M25