– 11 –
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened
swab:
record/playback head pinch roller
erase head rubber belts
capstan idlers
2. Demagnetize the record/playback head with a head
damagnetizer.
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 sup-
ply voltage unless otherwise noted.
• Torque Measurement
SECTION 4
MECHANICAL ADJUSTMENTS
SECTION 5
ELECTRICAL ADJUSTMENTS
DECK SECTION
1. The adjustment should be performed in the publication.
(Be sure to make playback adjustment at first.)
2. The adjustment and measurement should be performed for both
L-CH and R-CH.
• Switch position
DOLBY NR switch : OFF
TIMER switch : OFF
DIRECTION MODE switch : A
3. Deck section electrical adjustment are made in test mode by
pressing TUNER/BAND, DISPLAY, and FUNCTION at the
same time.
– Record Mode –
set
MD IN
600
Ω
attenuator
AF OSC
+
–
level meter
MD OUT
Tape Contents Use
P-4-A100 10 kHz, –10 dB
Head Azimuth Adjustment
P-4-L300 315 Hz, 0 dB Level Adjustment
WS-48B 3 kHz, 0 dB Tape Speed Adjustment
0dB = 0.775V
Record/Playback Head Azimuth Adjustment
DECK A DECK B
• Setup for adjustment
When adjusting the azimuth, remove the Window (DIS) in the
center of the front panel. (Refer to page 7.)
Procedure :
1. Mode : Forward Playback
• Test Tape
Mode Torqu Meter Meter Reading
Foward CQ-102C
36 to 61 g•cm
(0.50 – 0.84 oz•inch)
Forward
CQ-102C
2 to 6 g•cm
Back Tension (0.026 – 0.082 oz•inch)
Reverse CQ-102RC
36 to 61 g•cm
(0.50 – 0.84 oz•inch)
Reverse
CQ-102RC
2 to 6 g•cm
Back Tension (0.026 – 0.082 oz•inch)
FF, REW CQ-201B
61 to 143 g•cm
(0.85 – 1.98 oz)
Mode Torque Meter Meter Reading
Forward CQ-403A more than 100 g (3.53 oz)
Reverse CQ-403R more than 100 g (3.53 oz)
• Tape Tension Measurement
set
+
–
test tape
P-4-A100
(10 kHz, –10 dB)
MD OUT
level meter
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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