SECTION 5SECTION 6
MECHANICAL ADJUSTMENTSELECTRICAL ADJUSTMENTS
Precaution
DECK SECTION0 dB=0.775V
1. Clean the following parts with a denatured alcohol-moistened
swab:
1. Demagnetize the record/playback head with a head damagnetizer.
record/playback headspinch rollers
2. Do not use a magnetized screwdriver for the adjustments.
erase headrubber belts
3. After the adjustments, apply suitable locking compound to the
capstanidlers
parts adjusted.
2. Demagnetize the record/playback head with a head demagne-
4. The adjustments should be performed with the rated power sup-
tizer.
ply voltage unless otherwise noted.
3. Do not use a magnetized screwdriver for the adjustments.
5. The adjustments should be performed in the order given in this
4. After the adjustments, apply suitable locking compound to the
service manual. (As a general rule, playback circuit adjustment
parts adjusted.
should be completed before performing recording circuit adjust-
5. The adjustments should be performed with the rated power sup-
ment.)
ply voltage unless otherwise noted.
6. The adjustments should be performed for both L-CH and R-CH.
7. Switches and controls should be set as follows unless otherwise
Torque Measurement
specified.
ModeTorque meterMeter reading
TapeSignalUsed for
31 to 71 g Y cm
FWDCQ-102C
(0.43 � 0.98 oz Y inch)P-4-A10010 kHz, �10 dBAzimuth Adjustment
FWD2 to 6 g Y cm
CQ-102CWS-48B3 kHz, 0 dBTape Speed Adjustment
back tension(0.02 � 0.08 oz Y inch)
31 to 71 g Y cmP-4-L300315 Hz, 0 dBLevel Adjustment
REVCQ-102RC
(0.43 � 0.98 oz Y inch)
REV2 to 6 g Y cm
CQ-102RCRecord/Playback Head Azimuth Adjustment
back tension(0.02 � 0.08 oz Y inch)
71 to 143 g Y cm(Deck A, Deck B)
FF/REWCQ-201B
(0.98 � 1.99 oz Y inch)
100 g or moreNote: Perform this adjustments for both decks.
FWD tensionCQ-403A
(3.53 oz or more)
100 g or more
REV tensionProcedure:CQ-403R
(3.53 oz or more)
1. Mode : Playback
test tape
P-4-A100
(10kHz, �10dB)
MD OUTlevel meter
set+
�
2. Turn the adjustment screw and check output peaks. If the peaks
do not match for L-CH and R-CH, turn the adjustment screw so
that outputs match within 1 dB of peak.
L-CH
output
peak
level within
1 dBwithin 1dB
R-CH
peak
screw
position
screw
L-CHR-CHposition
peakpeak
� 13 � |
ACEC
SONY
