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3-2.
ELECTRICAL
ADJUSTMENTS
Note: The adjustment should be performed
the order given in this service manual.
The adjustments
L-CH and R-CH.
for both
Set the BIAS and EQ switches according to the
tape as follows.
(METAL)
cs-30 I
Fe-Cr
AUTO
cs-40
Fe-Cr (METAL)
Switches and controls should be set as follows
unless otherwise specified.
DOLBY NR switch:
TAPE switch:
Standard Record:
l
Deliver the standard input signal level to the
input jack and set the REC LEVEL control to
obtain the standard output signal level.
Standard Input Level
source impedance
300 ohm
input level
0.77 mV (-60 dB) 0.25 V (-10 dB)
Standard Output Level
H E A D P H O N E S
load
impedance
31
mV (-26
in
should be performed
III:
Fe-Cr
IV: METAL
OFF
AUTO (I: NORM)
MIC
LINE IN
1 O k
O U T 1
4 7 k
dB) 1 0.435 V (-5 dB) I
- 1
Capstan motor Speed Adjustment
Procedure:
Mode: playback
test tape
WS-48A
(3 kHz, 0 dB)
set
Specification:
Speed
checker
I
-0.8~+0.8%
Frequency difference between the beginning
and the end of the tape should be within 0.84%
(25 Hz).
Adjustment Location:
Adjust the speed by using screwdriver. When
turning the screw clockwise, speed is faster.
5-
speed checker
L FM-30
digital ?Ferkquencv
counter
LINE OUT
I
Digital frequency counter
I
2975 ~ 3025 Hz
motor
I
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