XR-1300R, XR-2300R, XR-C2300R - Sony Car Audio Service Manual (repair manual). Page 13

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13
TAPE  DECK  SECTION
0 dB= 0.775 V
1. The adjustments should be performed in the order given in
this service manual.
2. The adjustments should be performed for both L-CH and
R-CH.
Test Tape
PB Head Azimuth Adjustment

Procedure:
1. Put the set into the FWD PB mode.
2. Turn the screw and check the output peak value.  Adjust the
screw so that the peak value in channels L and R coincides
within 2 dB.
3. Check the phase in the FWD PB mode.
4. Repeat the above adjustment for the REV PB mode.
5. Check that output level difference between FWD PB mode
and REV PB mode is within 4 dB.
Type
 Signal
 Used for
P-4-A063
6.3 kHz, –10 dB
head azimuth adjustment
WS-48A
3 kHz, 0 dB
tape speed adjustment

Adjustment Location: PB head
Tape Speed Adjustment
Setting:

Procedure:
1. Put the set into the FWD PB mode.
2. Adjust adjustment resistor for inside capstan motor so that the
reading on the speed checker or frequency counter becomes in
specification.

Specification: Constant speed

Adjustment Location: See page 16.
See the adjustment location from on page 16 for the ad-
justment.
Speed checker
Frequency counter
–2 to +3%
2,940 to 3,090 Hz
level 
meter
test tape 
P-4-A063
(6.3 kHz, –10 dB)
set
speaker out terminal (1300R) or
AUDIO OUT jack (CN400) (C2300R)
4 
Ω
+
–
screw
position
L-CH
peak
within
2 dB
output
level
L-CH
peak
R-CH
peak
within
2 dB
angle
R-CH
peak
test tape 
P-4-A063
(6.3 kHz, –10 dB)
L-CH
R-CH
speaker out terminal (1300R) or
AUDIO OUT jack (CN400) (C2300R)
oscilloscope
V
H
+ +
–
–
Screen pattern
in phase
good
wrong
45 
°
90 
°
135 
°
180 
°
4 
Ω
4 
Ω
set
FWD 
REV 





adjustment 
screws
+
–
speed checker
or
frequency counter
test tape
WS-48A
(3 kHz, 0 dB)
speaker out terminal (1300R) or
AUDIO OUT jack (CN400) (C2300R)
set
4 
Ω

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