ZS-D1 - Sony Audio Service Manual (repair manual). Page 17

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PRECAUTION
Clean the following parts with a denatured-alchool-moistened
swab:
record/playback/erase head (Deck B)
pinch rollers
playback head (Deck A)
rubber belts
idlers
capstans
Demagnetize the record/playback/erase head with a head
demagnetizer.
Do not use a magnetized screwdriver for the adjustments.
After the adjustments, apply suitable locking compound to the
parts adjusted.
Perform adjustment under the specified voltage unless
otherwise specified.
When running a mechanism deck with a cassette inserted, press
a function key while pressing down the cassette.
Torque Measurement
DECK A
DECK B
*
The head must be set in the FWD position before starting FF
torque measurement.
Tape Tension
DECK A
DECK B
SECTION 4
MECHANICAL ADJUSTMENTS
Tension Meter
CQ-403A
CQ-403R
Mode
FWD
REV (Deck B)
Meter reading
more than 100g
(more than 1.38 oz · inch)
Meter reading
22.5 to 50g · cm
(0.31 to 0.69 oz · inch)
1.5 to 5g · cm
(0.02 to 0.06 oz · inch)
22.5 to 50g · cm
(0.31 to 0.69 oz · inch)
1.5 to 5g · cm
(0.02 to 0.06 oz · inch)
*140 to 180g · cm
(1.94 to 2.49 oz · inch)
Mode
FWD
FWD
back tension
REV
REV
back tension
FF
Torque Meter
CQ-102C
CQ-102RC
CQ-201B
5-1.
TAPE RECODER SECTION
0 dB = 0.775 V
PRECAUTION
1.
Adjustments should be performed in the order given. (Generally
playback circuit adjustments should be completed before
preforming recording circuit adjustments.)
2.
Adjustments should be performed for both L-ch and R-ch.
(Switches and controls should be set as follows unless otherwise
specified.)
Standard Record:
Deliver the standard input signal level to the input jack and set the
VOLUME +/- keys to obtain the standard input and output signal
level.
Standard input level
Standard output level
Test tape
SECTION 5
ELECTRICAL ADJUSTMENTS
LINE IN
10 k
0.25 V (-9.8 dB)
Input Pin
Signal source impedance
Input signal level
Test Tape
WS-48A
P-4-A100
Used for
Tape speed adjustment
REC/PB/ERASE Head azimuth
and phase adjustment.
Signal
3 kHz, 0 dB
10 kHz, -10 dB
Output Pin
Load impedance
Output signal level
H.P OUT
32 
0.10 V (-18 dB)
SP OUT (L, R)
3.2 
0.775 V (0 dB)
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