Tape Speed Adjustment; Record/Playback Head Azimuth Adjustment; Adjustment Location - Sony TC-R303 Service Manual

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Tape Speed Adjustment

3 7 63 1515 0
Procedure:
Mode: FWD playback
test tape
Ws-488
(3 k Hz, 0 dB)
Specification:
-1-+1%
Frequency difference between the beginning
and the end of the tape should be within 0.84%
(25Hz).

Adjustment Location:

Adjust by using a screwdriver. Turning in the
direction of clockwise, speed will be fast.
TE
L 13942296513
Adjustment resistor
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speed checker
L FM-30
digital frequency
counter
0
I
LINE OUT
Digital frequency counter
2,970-3,030Hz
motor
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Record/Playback Head Azimuth Adjustment

2 9
8
Procedure: Adjust both NOR and REV.
Mode: playback
1.
test tape
P-4-A 100
the adjustment screw for the maximum
2. Turn
output levels. If these levels do not match, turn
the adjustment screw until both of output
levels match together within 1 dB.
L-CH
peak
position
Q Q
3 6 7 1 3 1 5
3. Phase Check
Mode: playback
Test
tape
P-4-A100
(10kHz, -1OdB)
A
L-CH
Adjustment Location:
-
Record/Playback head -
co
.
-8-
9 4 2 8
VTVM
0 5 8 2 9 9 4 2 8
peak
peak
oscilloscope
LINE OUT
m
FWD R E V
Adjustment screw
9 9
9 9