Tape Deck Section; Tuner Section - Sony XR-C7500R Service Manual

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TAPE DECK SECTION

Tape Speed Adjustment
Setting:
test tape
WS-48A
(3 kHz, 0 dB)
set
LINE OUT REAR jack (CN13)
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
Speed checker
–1.5 to +2.5%
Dolby Level Adjustment
Setting:
[MENU]
button
[DISC +]
Preset
[+ ]
t
> M (t) buttons
TE
L 13942296513
[DSO]
(BAS, TRE) button
[SOUND]
(BAL) button
[SOUND]
(FAD (Front)) button : Center
[SOUND]
(FAD (Rear)) button
VOLUME CONTROL dial
MAIN board
test tape
P-4-D400
TP (DOLBY-L)/
(400Hz, 0 dB)
TP (DOLBY-R)
set
Procedure:
1. Put the set into the FWD PB mode.
2. Adjust RV230 (L-CH) and RV240 (R-CH) so that the level
meter reading is –6±0.5 dB (0.37 to 0.41 V).

TUNER SECTION

Tuner section adjustments are done automatically in this set.
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0 dB=0.775 V
speed checker
or
frequency counter
10 kΩ
– +
Frequency counter
2,955 to 3,075 Hz
: ON (light up SET UP and
PLAY MODE)
: NR off
: off
: Center
: Center
: Maximum
level meter
+
–
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8
Adjustment Location:
– SET UPPER VIEW –
Q Q
3 6 7 1 3 1 5
– SET BOTTOM VIEW –
TP (DOLBY-R)
TP (DOLBY-L)
TP
(GND)
co
.
9 4 2 8
Tape Speed Adjustment
TUX1
RV240
Dolby Level Adjustment (R-CH)
RV230
Dolby Level Adjustment (L-CH)
0 5 8 2 9 9 4 2 8

Dolby Level

Adjustment

m
9 9
9 9