DOWNLOAD Sony XR-C550 / XR-C550W Service Manual ↓ Size: 790.61 KB | Pages: 41 in PDF or view online for FREE

Model
XR-C550 XR-C550W
Pages
41
Size
790.61 KB
Type
PDF
Document
Service Manual
Brand
Device
Car Audio
File
xr-c550-xr-c550w.pdf
Date

Sony XR-C550 / XR-C550W Service Manual ▷ View online

– 17 –
ARM (SUCTION)
1 Fit the arm (suction) on the shaft.
2 Move the arm (suction) in the arrow
     direction and fit on projection.
2 Fit the lever (LDG-B) on
    shafts 
A – E and install it.
shaft A
shaft B
shaft C
1 Fit the lever (LDG-A) on
    shafts 
A – C and install it.
shaft C
shaft A
shaft D
shaft E
3 two type-E stop ring 2.0
LEVER (LDG-A) / (LDG-B)
projection
– 18 –
GEAR (LDG-FT)
2 tension spring (lever LDG)
5 gear (LDG-FT)
6 polyethylene washer
1 gear (LDG-A)
3 Move the lever (LDG-B)
     in the arrow direction.
gear (LDG-FB)
gear (LDG-D)
hole
gear (LDG-FB)
lever (LDG-A)
4 Align hole in the gear (LDG-D) with
     
¢ mark on the lever (LDG-A).
GUIDE (C)
1 three claws
2 guide (C)
– 19 –
PRECAUTION
1. Wipe the following components with an absorbent cotton cloth
moistened with alcohol before adjustment :
PB head
Pinch roller
Idler
Rubber belt
Capstan
2. Demagnetize the PB head using a head demagnetizer.
3. Be careful not to use a magnetized screwdriver.
4. After the adjustment is completed, lock the adjustment parts using
screws.
5. Unless otherwise specified, make adjustments at the specified
voltage (14.4V).
Torque Measurement
Mode
Torque Meter
Meter Reading
35 – 65 g • cm
FWD
CQ-102C
(0.49 – 0.90 oz • inch)
FWD
0.5 – 5.0 g • cm
Back Tension
(0.01 – 0.07 oz • inch)
35 – 65 g • cm
REV
CQ-102RC
(0.49 – 0.90 oz • inch)
REV
0.5 – 5.0 g • cm
Back Tension
(0.01 – 0.07 oz • inch)
60 – 200 g • cm
FF, REW
CQ-201B
(0.83 – 2.78 oz • inch)
Tape Tension Measurement
Mode
Tension Meter
Meter Reading
FWD
CQ-403A
more than 60 g
REV
CQ-403R
(more than 2.12 oz)
SECTION 5
ELECTRICAL ADJUSTMENTS
SECTION 4
MECHANICAL ADJUSTMENTS
 See the adjustment location from on page 22 for the adjust-
 ment.
  DECK SECTION
Tape Speed Adjustment
Procedure :
1. Put the set into the FWD PB mode.
speed checker
or
frequency counter
10 k 
set
LINE OUT REAR
test tape
WS-48A
(3 kHz, 0 dB)
Specification : Constant speed
Speed checker
Frequency counter
– 1.5 to + 2.5 %
2,955 to 3,075 Hz
Adjustment Location : See page 22.
DOLBY Level Adjustment
Setting :
SHIFT button
: ON (light up SET UP and
PLAY MODE)
Preset  3  (PLAY MODE) button : NR off
SOUND (BAS) button
: Center
SOUND (TRE) button
: Center
SOUND (BAL) button
: Center
SOUND (FAD) button
: Center
SOUND (VOL) button
: Maximum
Procedure :
1. Put the set into the FWD PB mode.
2. Adjust RV251 (L-CH) and RV261 (R-CH) so that level meter
reading is – 6 ± 0.5 dB (0.37 to 0.41 V).
Adjustment Location : See page 22.
test tape
P-4-D400
(400 Hz, 0 dB)
main board
TP (DOLBY)
set
level meter
L-CH
R-CH
0 dB = 0.775 V
– 20 –
Procedure :
1. Set to the test mode.
2. Push the  SOURCE  button and set to FM.
Display
FM Auto Scan/Stop Level Adjustment
Setting :
SOURCE button
: FM
FREQUENCY SELECT switch (E model) : FM 200k
3. Push the preset  3  button.
Display
4. Adjust with the volume RV2 on TU11 so that the “FM”
indication turns to “FM0” indication on the display window.
But, in case of already indicated “FM0”, turn the RV2 so that put
out light “0” indication and adjustment.
Display
SHUF1
SHUF1
Adjustment Location : See page 22.
SHUF1
  TUNER SECTION
Cautions during repair
When the tuner unit is defective, replace it by a new one because
its internal block is difficult to repair.
0 dB = 1 µV
TEST MODE
This set have the test mode function. In the test mode, FM Auto Scan/
Stop Level and AM (MW) Auto Scan/Stop Level adjustments can be
performed easier than it in ordinary procedure.
<Set the Test Mode>
1. Set the “OFF” mode.
2. Push the preset  4  button.
3. Push the preset  5  button.
4. Press the preset  1  button for more than two seconds.
5. Then the display indicates all lights, the test mode is set.
<Release the Test Mode>
1. Push the  OFF  button.
Note on Adjustment
The adjustments of tuner section, should be performed according to
the following sequence.
1. FM Auto Scan/Stop Level Adjustment
2. FM Stereo Separation Adjustment
3. FM Noise Focus Adjustment (E model)
4. AM (MW) Auto Scan/Stop Level Adjustment
Carrier frequency : 97.9 MHz
Output level
: 22 dB (12.6 µV)
Mode
: mono
Modulation
: 1 kHz, 22.5 kHz deviation (30%)
FM RF signal
generator
0.01 µF
antenna
terminal
set
Page of 41
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