Teleton CD-200 Service Manual

SERVICE MANUAL
Stereo Cassette Deck
MODEL cCD-200
CD-200B
Germany: TELETON Elektro GmbH.
4000 Disseldorf-Rath Oberhausener Str. 17
. ; Tel. (0211) 65 30 81 TX 858 6768
United Kingdom: TELETON Electro (UK) Co., Ltd.
. Teleton House, Waterhouse Lane,
Chelmsford/Essex
Tel. Chelmsford 62 442 TX 99 338
Technical Service Organization
Waterhouse Lane, Chelmsford, Essex.
Tel. 0245-54621 TX 99338
TELETON N.V. .
2200 Borgerhout Belgium —
Prins-Leopold-Straat 28
Tel. 03/361045 TX32508
03/357670
Belgium:
Netherlands: TELETON NEDERLAND B.V.
| Marconiweg 10. Vianen |
Tel. 03473-3744 TX 40581
France: TELETON Electro (France) S.a.r.I.
21 rue Paul Lafargue
94270 Le Kremlin-Bicétre
Tel. 677 6934 TX24 468
TRANSACO AG
Kanzleistrasse 126 8004 Zurich
Tel. 39 45 60/23 50 40 TX 52 362
Switzerland:
Specifications are subject to change without notice.
ALIGNMENT PROCEDURE
1. Tape Speed Adjustment
Equipment Required:
a) Standard alignment tape of 3 KHz
b) Wow & Flutter Meter with Tape Speed Meter
c) Amplifier
Procedure: |
1) Connect the deck and speakers to the amplifier.
2) Connect the Wow & Flutter Meter to one of the
speakers and playback the standard test tape.
3) Adjust* VR on the motor electronic governor circuit
to indicate 3 KHz on the center frequency range of
the meter.
*This VR is installed inside the motor case.
The VR is covered by a black rubber shroud, but
there is a cross-shaped cut in the rubber to allow
access to the VR.
. Head Azimuth Alignment
Equipment Required: |
a) Standard alignment tape of 10 KHz
b) VT VM or Output Meter
Procedure: |
1) Connect the VTVM or Output Meter to one of the
speakers and playback the test tape.
2) Adjust the azimuth alignment screw to obtain maxi-
mum output voltage on the VI VM or Output Meter.
. Meter Sensitivity Adjustment
~Equipment Required:
a) VTVM
b) Signal Generator
Procedure:
1) Set the signal generator to 333 Hz -0.4mV output,
and connect to the Mic terminal (L+R). |
2) Set Selector Switch to Record Mode and Rec VRs to
maximum position.
3) Adjust VR107, 108 (100K ohm —B) to indicate OVU
on the VU meters.
: Input/Output VR Level Adjustment
Equipment Required:
a) VTVM
b) Signal Generator
Procedure:
1) Set the Signal Generator to 333 Hz - 30mV output,
and connect to the DIN (AUX) input terminal.
2) Set Selector Switch to Record Mode and Rec VRs to
maximum position.
3) Adjust VR401 (100K ohm —B) to indicate OVU on
the VU meters.
4) And then adjust VR402 (5K ohm —B) to obtain
output level 0.35V on the VT VM.
5. Record Bias Adjustment
Equipment eae
a) VTVM
Procedure:
1) Connect the VTVM to both sides of R111 (10 ohm)
on the printed circuit board for the left channel.
2) Set Selector Switch to Record Mode.
3) Adjust VR109 (100K ohm —B) to obtain 1.9 mV on
the VT VM at tape selector chrome position.
4) Confirm voltage value to obtain 1.4 mV at tape
selector normal position.
5) Change the connection to the right channel resistor
R112 (10 ohm) and adjust VR110 to obtain 1.9 mV
at tape selector chrome position.
6) Confirm voltage value to obtain 14 mV at tape
selector normal position.
. Play - Record Caliblation
Equipment Required:
a) VTVM
b) Signal Generator c) Dolby Level Tape
Procedure: |
1) Play Dolby Level set tape.
2) Adjust play cal. VR101, 102 (50K ohm —B) so that
VU meters read +2VU.
Remove Dolby Level set tape.
3) Connect a source of 333 Hz signal to Mic input
(L+R). With tape selector normal position, record on
blank iron-based tape and adjust Record Level con-
trol so that meters read OVU.
4) Without altering the Record Level control settings,
adjust the Fe,Q3 Rec. cal. VR105, 106 (20K ohm
_—B) as required and playing back the recorded tape,
the meters read OVU.
5) Repeat steps 3) and 4) with chrome-based tape (tape
selector in the CrO, position) using the CrO, Rec.
cal. VR103, 104 (20K ohm —B).