Pioneer DC-221Z User manual

© PIONEER
Service
CIRCUIT DESCRIPTIONS
REPAIR & ADJUSTMENTS
aes = ORDER NO.
Re ARP-811-0
STEREO DOUBLE CASSETTE TAPE DECK AMPLIFIER
C-2212
DC-2202
(Silver Version of DC-2212Z)
e DC-221Z is the same as the DC-220Z except for the exterior design (color).
e Models DC-221Z and DC-220Z come in seven versions distinguished as follows:
Applicable model
DC-221Z DC-2202
fe) — AC120V only U.S.A
Power requirement Destination
Oo AC220V (240V)* European continent
ae AC240V (220V)* United Kingdom
AC110V/120V/220V/240V (Switchable) General market
AC240V (220V)* Australia
AC220V (240V)* West Germany
AC120V only Canada
*Change the primary wiring of the power transformer.
This service manual is applicable to the KU, HB, HE, S and YP types.
For
servicing
of
the
HEZ
type,
please
refer
to
the
additional
service
manual
(ARP-812).
For
servicing
of
the
KC
type,
please
refer
to
the
additional
service
manual
(ARP-813).
For
servicing
the
HE,
HB,
S,
and
YP types,
please
see page
57-58.
¢ Ce manuel d'instruction se refere au mode de réglage, en francais. (P45-P50)
Este manual de servicio trata del método de ajuste escrito en espaiiol. (P51-P56)
a
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: [800] 421-1404, [phone]
PRIONEER ELECTRONIC [EUROPE] N.V. Keetberglaan 1, 2740 Beveren, Belgium TEL: 03/775:28:08
PIONEER ELECTRONICS AUSTRALIA PTY. LTD. 178-184 Boundary Road, Braeside, Victoria 3195, Australia
TEL: [phone]
SA@® APR. 1985 Printed in Japan

DC-2212/2202Z
CONTENTS
1. SPECIFICATIONS ........ 0.0000. c eee eee ee 2
2. FRONT PANEL FACILITIES ................. 3
3. DISASSEMBLY ...............0000.0 000008 4
4. PARTS LOCATION ............... 000.00 00e 9
5. EXPLODED VIEW ........... 0.020. cee eee 11
6. ELECTRICAL PARTS LIST.................. 21
ty “PACKING 36). oe k.cad ak vad leis 4g hagas eke 25
8. P.C.BOARDS CONNECTION DIAGRAM ....... 27
1. SPECIFICATIONS
AMPLIFIER SECTION
Continous Average Power Output is 40 Watts* per channel,
min., at 8 ohms from 40 Hertz to 20,000 Hertz, with no more
than 0.3% total harmonic distortion.
*Measured pursuant to the Federal Trade Commission's Trade Regulation
rules on Power Output Claims for Amplifiers.
Continuous Power Output
AO t0 20,Q00HZ 0... cee eeeeeeeeeeeeteeeeees 40W + 40 W(T.H.D. 0.3% 8 ohms)
TRA2(DIN) circethietaavdeantssvasavea seven oa eos 50W + 50W(T.H.D. 1% 8 ohms)
1 kHz (DIN music power) ...........c cece 7OW + 70W(T.H.D. 1% 8 ohms)
Hum and Noise (IHF, short-circuited, A network)
PHONO) 02s rudte assets ihenbelredatinsedeutehensbestivetshars mvcest omaseen Srste 72 dB
Hum and Noise (DIN continous Power/50 mV)
PHONO! ssssceutesssettmderdetunsen cots soaveliacubeSuesccabsudteneiseddentns 68 dB/60 dB
Total Harmonic Distortion (40 Hz to 20,000 Hz, 8 ohms), from CD/VIDEO
20 Watts per channel power Gutput ............ceeeeee eens No more than 0.2%
Tape Deck Section
SYSIOMS-s560 oi csncs base vectesashelvere wioctouadtidapoas Wette 4 track, 2-channel stereo
Heads “Hard Permalloy’’ recording/ playback head x 1
“Hard Permalloy” playback head x 1
“Ferrite” erasing head x 1
Dummy head x 1
MOtOr salsa cess scans eb aviepan peseueet ves ooebbes esezanesneaes OC servo 2 speed motor x 2
Wow and Flutter..........cccceccecececeseeeeneaeanenenens No more than 0.08% (WRMS}
No more than +0.20% (DIN)
Fast Winding Time ............cceeeeeeeeeeees Approximately 115 seconds (C-60 tape)
Frequency Response
—20 dB recording:
Normal tape. cvscssc.coasstes cess teeee steer ethdsecenect evvesegeosneeeat 35 to 13,000 Hz
Metaltape so:3.1.h5sficctsisesed easton seen dieeatesl Austin ceeepennete 35 to 15,000Hz
Signal-to-Noise Ratio
Dolby NR OFF ............cccccceceecesceeccsceeceeessesseeseeceeees More than 55 dB
Noise Reduction Effect
Dolby NRON .......ccccceecccceeeeeceeeeeeeeeeeeeeaeeees More than 10 dB (at 5 kHz)
9. SCHEMATIC DIAGRAM .................-05. 31
10. BLOCK DIAGRAM ...................00 eee 35
11. CIRCUIT DESCRIPTIONS .................. 37
12. ADJUSTMENTS: 'Sircs cd te head aia 39
REGIAGE Sc etoe ce ch ey eee oat 3 45
PASTE Aenea cn teu hie aout aacieri Boe 51
13. FOR HE, HB, S, YP TYPES ................ 57
14. SAFETY INFORMATION .................-- 59
Furnished Parts
Operating INStrUCTIONS.-:cSccics.csic.diea ec cgekcdzs lente ais sd eee vei ees eSeea eset cactent ree: 1
Miscellaneous
Power requirements
KU and KC models sis .dsscncevestegixeyacntivatayea teagan AC 120 V, 60 Hz
HE MOM ON 052. cSdacsadevdies snbin Sea ddawaxcaudd laapaiesdes duccadeabseaaesed AC 220 V, 50/60Hz
HB arid VP iMOdel 8) si.012 .eccteieceseeang cvecaeedaacesseuns alacttsendaed AC 240 V, 50/60 Hz
S and S/G models .......... AC 110 V/120 V/220 V/240 V, 50/60 Hz (switchable)
Power Consumption
KU model .. Minn Sisto 199 W
KC model .............0000e ... 199W
HE, HB; and'Y.Pimodels. vicccccies. cetee see veaeasecattecatebsteerededd cegeassna geass 300 W
SAN. S/GSMOMEIS: nie. cciscecsecssessnausensseceaaascdueseeedsengsecasaaneienadeseyh 199 W
DIMENSIONS: .s0. cs cae casei se sen eave receins as taw eas gtendes dae? 420W) x 188(H) x 224(D) mm
16-9/16(W) x 7-6/16(H) x 8-13/16(D) in
Weight (without package) ..........0... cocci e cece eeeeeeeee an eeeeaeees 7 kg (15 lb 7 oz)

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.
T. Nakagawa, Manager, Service Section, International Division
1. SERVICING EVALUATION Circle applicable number: Good Fair Poor
a. Disassembly/Re-assembly: 1 2 3 *4 *5
b. Circuit Checks: 1 2 3 *4 *5
c. Replacement of Parts: 1 o sa "an SG
d. Adjustment (s): 1 2 8 *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
OTHER
Please describe other areas of servicing which you may find difficult.
Completed by :
Company Name :
Address :
City/State/Zip :
Please send this form filled to the distributor in your country.

2.FRONT PANEL FACILITIES
Deck I! (Recording/Playback)
Deck | (Only for playback)
@ REC indicator
This lights during the recording mode.
@ POWER indicator
@ POWER switch
@ HEADPHONES jack
@ GRAPHIC EQUALIZER controls
By operating these five controls, equalization effects can be added to program
source or tape playback sounds.
@ BALANCE control
@ FUNCTION switches
TAPE ( a0 ): Push when playing back tapes.
CD/VIDEO{ %© }: Push when listening to a component connected to the
CD/VIDEO terminals.
TUNER ( # ): Push when listening to broadcasts on the tuner.
PHONO ({ @ ): Push when playing records on the turntable.
© VOLUME control
© PLAY switch (> )
Dc-2212Z/220zZ
@ REW switch { «<< )}
@ STOP/ EJECT switch ( ~~ )
@® REC switch ( ° )
@ PAUSE switch ( = )
@ HIGH SPEED COPY switch
OFF ( Ill ): Tapes are copied at the normal speed.
ON ( mm ): Tapes are copied at twice the normal speed.
NOTE:
¢ Do not change the switch position during tape copying.
¢ When this switch is set to the ON position, recording of an external
source {equipment connected to the CD/VIDEO terminals, a turntable
or tuner) is not possible. When not performing high speed tape copying,
always leave in the OFF position.
@ *DOLBY NR switch
Push this switch to ON when recording with the built-in Dolby noise reduction
system (B type), and when playing back tapes which. have been
recorded using the system.
Aa “ia “ih ih ih 1A TATTOO TACT TA TA TATA IA TATA TATA TATA TAS
*Noise Reduction manufactured under license from Dolby Laboratories Licens-
ing Corporation.
“Dolby” and the double-D symbol are trademarks of the Dolby Laboratories
Licensing Corporation.
aia 1h “1h 1h 1h 1h TATA TOOT TOT AO AA ATA AAA TA TAA CAAA CATA
@ TAPE COUNTER
This indicates the transport position of the tape loaded in Deck iI with a three-
digit number.
@ RESET button
Push this button to reset the tape counter display to 000.
@ SYNCHRO REC START switch
When this switch is pressed, Deck | will enter the playback mode, and Deck tl
will simultaneously begin recording.
@ REC MUTE switch
Use for creating non-recorded blank spaces on the tape.

Dc-2212/220Z
3. DISASSEMBLY
CASSETTE REPLACEMENT PROCEDURES 7. Remove 7 pieces of screw (4), and remove Deck
holder (with Synchro plate).
8. Open Cassette door. (See Fig. 3-3)
9. Remove 4 individual pieces of screw ().
10. Remove Counter belt from Tape counter, and hook
onto the Tape transport unit 2.
11]. Remove the Tape transport unit 1 and 2 from the
Front panel assembly.
1. Remove 7 pieces of screw Q).
2. Remove Bonnet case.
3. Remove 2 pieces of screw Q): and 1 piece of nut Q).
4. Push the claw at the bottom of chassis, remove the
Front panel assembly, and pull out toward you.
Remove the LED assembly from the Front panel
assembly.
5. Remove 6 pieces of screw Q). and enable the Power
amplifier assembly to move upward (See Fig. 3-2)
6. Remove connectors J7, J11, J14, J15, and J19 of the
wiring coming out of the Tape transport unit.
(Separate the front panel from the main body.)
LED assembly

al om —t-h b 4i-t-1 97-4
Connector J15
Connector J14
Connector J19
Deck holder
Fig. 3-2
Cassette door
Front panel assembly
Tape transport unit 2
Fig. 3-3

DC-2212/220Z
COMPONENT PARTS REPLACEMENT
PROCEDURES
Replacement of Motor
1.
2;
3.
SrIHNDWSf
Remove lead wire of motor terminal. (See Fig. 3-5)
Remove set screw (1), and detach Relay board.
Remove set screw (2), and detach Motor holder. (See
Fig. 3-4)
Remove 2 set screws (3) of Motor, and detach Motor.
Pull out Motor pulley from Motor.
Attach Motor pulley to new Motor.
Adjust the height of Motor pulley. (See Fig. 3-4-1).
Attach Motor to Motor holder.
Motor
Motor holder
Fig. 3-4
While applying the Belt on the flywheel side, attach
Motor holder to Tape transport unit
Apply Belt to driving pulley and pulley.
. Attach Relay board with screw Q).
Solder lead wire to motor terminal.
Fasten securely head lead and control lead with
binder.
. Adjust the tape speed.

me | ot — ee et —1 2
Tape transport unit
Relay board
Fig. 3-5
Replacement of Belt 5. Apply belt to driving pulley and pulley.
1. Remove set screw (1), and detach Relay board. 6. Fasten Relay board with screw (1).
2. Remove set screw (2), and detach Motor holder from 7. Fasten securely head lead and control lead with
the Tape transport unit binder.
3. Replace the old belt with a new one. 8. Adjust the tape speed.
4. While applying the belt on the flywheel side. attach
Motor holder to the Tape transport unit.

Dc-2212/2202Z
Replacement of Head
1. Detach cassette knob. 6. Attach cassette knob.
2. Remove head lead from head. 7. Check the running of tape.
3. Remove set screw qd) of head. 8. Perform azimuth adjustment.
4. Remove former head and install a new one. 9. Perform bias adjustment.
5. Solder head lead while taking precaution not to
touch the wirings.
Tape transport unit 2 Tape transport unit 1
Head lead wires
Head lead
WHT /
NEE ee Ee
REC/PB
head
Erase
head
eo
eet Fe A
B foe ORG Ty
a | ~ Po
MO LARP AE OS J
By
REC/PB head
oye”
es Play back head