– 7 –
SECTION 4
ADJUSTMENTS
4-2. ELECTRICAL ADJUSTMENTS
PRECAUTION
• Supplied v olta g e : 2.5V.
• Switch and control position
SET switch : NORM
VOLUME control : maximum
MENU switch : NORM
Test Tape
Type Signal Used for
WS-48A 3kHz, 0dB Tape Speed Adjustment
Tape Speed Adjustment
Procedure :
1. Pla ybac k WS-48A (tape center par t) in the REV state and adjust
RV601 so that the frequenc y counter reading becomes 2,990Hz
– 3,010Hz.
2. Pla ybac k WS-48A (tape center) in the FWD state .
Check that frequency counter reading is within 1.5% of the read-
ing of step 1.
Adjustment Location :
set
test tape
WS-48A
(3kHz, 0dB)
frequency counte
J101 (phones)
16
Ω
4-1. MECHANICAL ADJUSTMENTS
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened
swab :
playback head pinch roller
capstan rubber belt
2. Dema gnetiz e the pla ybac k head with a head dema gnetiz er .
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 v olta g e (2.5 V) unless otherwise noted.
Torque Measurement
Mode Torque Meter Meter Reading
FWD
20 - 42 g • cm
CQ-102C
(0.28 -0.58 oz• inch)
FWD less than 2 g • cm
back tension (less than 0.03 oz• inch)
REV
20 - 42 g • cm
CQ-102RC
(0.28 -0.58 oz• inch)
REV less than 2 g • cm
back tension (less than 0.03 oz• inch)
FF, REW CQ-201B
more than 60 g • cm
(more than 0.83 oz• inch)
RV601
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