Tape Deck Section; Tuner Section - Sony XR-C7500RX Service Manual
Fm/mw/lw cassette car stereo
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Also See for XR-C7500RX:
- Operating instructions manual (212 pages) ,
- Service manual (54 pages) ,
- Operating instructions manual (164 pages)
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TAPE DECK SECTION
0 dB=0.775 V
Tape Speed Adjustment
Setting:
speed checker
or
frequency counter
test tape
WS-48A
(3 kHz, 0 dB)
10 k Ω
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
Frequency counter
–1.5 to +2.5%
2,955 to 3,075 Hz
Dolby Level Adjustment
Setting:
[MENU]
button
: ON (light up SET UP and
PLAY MODE)
[DISC +]
Preset
[+
]
t
(t) buttons
: NR off
> M
[DSO]
(BAS, TRE) button
: off
[SOUND]
(BAL) button
: Center
[SOUND]
(FAD (Front)) button : Center
[SOUND]
(FAD (Rear)) button
: Center
VOLUME CONTROL dial
: Maximum
MAIN board
test tape
P-4-D400
TP (DOLBY-L)/
(400Hz, 0 dB)
level meter
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.
Adjustment Location:
– SET UPPER VIEW –
Tape Speed Adjustment
TUX1
RV240
Dolby Level Adjustment (R-CH)
RV230
Dolby Level Adjustment (L-CH)
– SET BOTTOM VIEW –
TP (DOLBY-R)
Dolby Level
Adjustment
TP (DOLBY-L)
TP
(GND)
Page 16
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