Sanyo DC D30 - Page 34

BLOCK DIAGRAM (CD)
CD MECHANISM
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OPEN SW
TAPE DECK/ AMPLIFIER UNIT ---2--2--220--000000eene
ADJUSTMENT OF DECK & TORQUE
4. Amplifier Adjustment
ADJUST
ITEM DECK | TEST TAPE INPUT DOLBY SW | OUTPUT POINT
; DECKA TAPE Azimuth Adjust so as 10kHz output become
Head Azimuth VTT738 OFF
DECK B OUT Screw maximum.
| SVR30 (L-ch)
DECKA
ee
Pr
TAPE
|
SVR31
(R-ch)
OUT
|
SVR32(L-ch)
DECKB
SVR33
(R-ch)
Playback Adjust so as TAPE OUT output become
0.54V.
Rec/Play 1kHz TAPE SVR34 (L-ch) | Adjust SVR so as Monitor o/p =R/P Level
DECKA AC224 OFF
Level -18dB OUT SVR35 (R-ch) = OdB+1dB.
R/P si |, set frequency characteristic
iKDEHOkS signal, s requency a isti
DECK B AC224
-28dB
1kHz output to OdB. Adjust SVR so as
10kHz output become + idB.
Note. 1. During alignment, measurement Beat cancel SW is at 1 condition fundamentally, confirm Rec/Play frequency characteristic,
dolby effect also by 2 condition, when ship out set SW to 1 position.
SVR36 (L-ch)
SVR37 (R-ch)
Rec/Play
Frequency
2. Tape Speed Adjustment
Connect the FREQUENCY COUNTER to TAPE OUT.
Insert the test tape(MTT-111N, etc. : 3000Hz) into the DECKA.
Press the FWD PLAY button.
Adjust SVROO1 so that a frequency counter reading of 3000 +5 Hz is obtained.
Press the STOP button, and eject the test tape.
Insert the test tape(TCW-211, etc. : 1500Hz) into the DECK A.
Insert the tape (C-60 Blank tape) into the DECK B.
Press the REC button of DECK B and press the DECK A/B button.
Press the FWD PLAY button. Both mechanism become normal speed dubbing.
8. Short the high speed test pin to the high speed position.
(The mechanism is high speed dubbing.)
9. Confirm that a frequency counter reading of 2700 ~ 3300Hz is obtained.
Note : Set the test tape near the tape end.
TAPE SPEED
SVROO1
Oc BN
4
TAPE OUT
PINS FOR HI oun
2
3. Parts Location
DECK-B
PLAYBACK
ADJUSTMENT
DECK-A TAPE OUT
POINT A 19 kHz Trap
Reh Lech EFFECT ADJUST
—_
L3730 L3830
Lch Reh
iG
PLAYBACK
ADJUSTMENT
———_.7".
SVR33 SVR31 SVR30 SVR32 SVR35 SVR34
Rch Rech Lch Lech Rech Lech
REC/PLAY GAIN
ADJUSTMENT
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HIGH SPEED
TEST POINT
CN373
CN371
Cid Ed CN331 £3300
DECK A DECK B SVR37 SVR36 E.HEAD
PLAY HEAD) R/P HEAD Rech Lch
CONNECTOR CONNECTOR “—~y——~
BIAS ADJUSTMENT
BIAS FREQUENCY
CONNECTOR ADJUSTMENT
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