Table of Contents
Advertisement
QQ
3 7 63 1515 0
MECHANICAL ADJUSTMENTS
Precaution
1. Clean the following parts with a denatured alcohol-moistened
swab:
record/playback heads
erase head
capstan
2. Demagnetize the record/playback head with a head demag-
netizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to
the parts adjusted.
5. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
Torque Measurement
Mode
FWD
FWD
back tension
REV
REV
back tension
FF/REW
TE
L 13942296513
FWD tension
REV tension
www
.
http://www.xiaoyu163.com
SECTION 5
pinch rollers
rubber belts
idlers
Torque meter
Meter reading
2.94 – 7.84 mN • m
CQ-102C
(30 to 79 g • cm)
(0.42 – 1.11 oz • inch)
0.15 – 0.59 mN • m
(2 to 6 g • cm)
CQ-102C
(0.03 – 0.08 oz • inch)
2.94 – 7.84 mN • m
(30 to 79 g • cm)
CQ-102RC
(0.42 – 1.11 oz • inch)
0.15 – 0.59 mN • m
(2 to 6 g • cm)
CQ-102RC
(0.03 – 0.08 oz • inch)
6.86 – 17.64 mN • m
(70 to 179 g • cm)
CQ-201B
(0.98 – 2.49 oz • inch)
9.8 mN • m or more
CQ-403A
(100 g • cm or more)
(1.4 oz • inch or more)
9.8 mN • m or more
CQ-403R
(100 g • cm or more)
(1.4 oz • inch or more)
x
ao
y
i
http://www.xiaoyu163.com
ELECTRICAL ADJUSTMENTS
8
DECK SECTION
1. Demagnetize the record/playback head with a head
demagnetizer.
2. Do not use a magnetized screwdriver for the adjustments.
3. After the adjustments, apply suitable locking compound to
the parts adjusted.
4. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
5. The adjustments should be performed in the order given in
this service manual. (As a general rule, playback circuit
adjustment should be completed before performing recording
circuit adjustment.)
6. The adjustments should be performed for both L-CH and R-
CH.
7. Switches and controls should be set as follows unless otherwise
specified.
Tape
P-4-A100
WS-48B
[Record/Playback Head Azimuth Adjustment]
Procedure:
1. Mode : Playback
test tape
P-4-A100
(10kHz, –10dB)
Q Q
3
6 7
1 3
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
peak
screw
position
u163
.
SECTION 6
2 9
9 4
2 8
0 dB=0.775V
Signal
10 kHz, –10 dB
Azimuth Adjustment
3 kHz, 0 dB
Tape Speed Adjustment
MAIN board
J201
speaker terminal
1 5
0 5
8
2 9
9 4
set
output
within
level
1 dB
R-CH
peak
L-CH
peak
m
co
HCD-GP8D
Ver 1.1
9 9
Used for
level meter
2 8
9 9
+
–
within 1dB
screw
R-CH
position
peak
15
Advertisement
Table of Contents
