– 10 –
4-2. 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.
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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 OUT
Level meter
+
–
MD IN
AF OSC
attenuator
600
Ω
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Test Tape
Tape
Contents
Use
P-4-A 100
10 kHz, –10dB
Head Azimuth Adjustment
P-4-L300
315Hz, 0dB
Level Adjustment
WS-48B
3kHz, 0dB
Tape Speed Adjustment
0dB=0.775V
Record/Playback Head Azimuth Adjustment
DECK A DECK B
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Setup for adjustment
When adjusting the azimuth remove, the Window (DIS) in the
center of the front panel. (Refer to page 8.)
Procedure :
1.
Forward Playback mode
Reverse Playback mode
set
MD OUT
+
-
test tape
P-4-A100
(10kHz, – 10dB)
Level meter
SECTION 4
ADJUSTMENTS
4-1. MECHANICAL ADJUSTMENTS
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened
swab :
record/playback head pinch roller
erase head
rubber belts
capstan
2. Demagnetize the record/playback head with a head demagnetizer.
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.
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Torque Measurement
Mode
Torque Meter
Meter Reading
Forward
CQ-102C
36 to 61g•cm
(0.50 – 0.84 oz•inch)
Forward
Back Tension
CQ-102C
2 to 6g•cm
(0.026 – 0.082 oz•inch)
Reverse
CQ-102RC
36 to 61g•cm
(0.50 – 0.84 oz•inch)
Reverse
Back Tension
CQ-102RC
2 to 6g•cm
(0.026 – 0.082 oz•inch)
FF, REW
CQ-201B
61 to 143g•cm
(0.85 – 1.98 oz•inch)
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Tape Tension Measurement
Mode
Torque Meter
Meter Reading
Forward
CQ-403A
more than 100g (3.53 oz)
Reverse
CQ-403R
more than 100g (3.53 oz)
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TEL 13942296513 QQ 376315150 892498299
