DOWNLOAD Sony XR-C440 / XR-C450 / XR-C450W / XR-P600C Service Manual ↓ Size: 5.17 MB | Pages: 43 in PDF or view online for FREE

Model
XR-C440 XR-C450 XR-C450W XR-P600C
Pages
43
Size
5.17 MB
Type
PDF
Document
Service Manual
Brand
Device
Car Audio
File
xr-c440-xr-c450-xr-c450w-xr-p600c.pdf
Date

Sony XR-C440 / XR-C450 / XR-C450W / XR-P600C Service Manual ▷ View online

– 17 –
1
Fit the lever (LDG-A) on
shafts 
A
 – 
C
 and install it.
shaft 
A
shaft 
C
4
type-E stop ring 2.0
shaft 
A
shaft 
B
LEVER  (LDG-A) / (LDG-B)
GEAR  (LDG-FT)
3
Align hole in the gear (LDG-D)
with hole the lever (LDG-A).
gear (LDG-FB)
hole
gear (LDG-D)
lever (LDG-A)
2
Move the lever (LDG-B)
in the arrow direction.
1
tension spring (lever LDG)
5
gear (LDG-FT)
5
polyethyene washer
hole
shaft 
B
3
Fit the lever (LDG-B) on
shafts 
A
 and 
B
 and
install it.
2
Pull the lever in the
arrow direction.
– 18 –
GUIDE (C)
2
guide (C)
1
three claws
– 19 –
SECTION  4
MECHANICAL  ADJUSTMENTS
SECTION  5
ELECTRICAL  ADJUSTMENTS
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.
1. Clean the following parts with a denatured-alcohol-moistened
swab:
playback head
pinch roller
rubber belt
capstan
idles
2. Demagnetize the playback head with a head demagnetizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
5. The adjustments should be performed with the power supply
voltage unless otherwise noted.
 Torque  Measurement
Mode
Torqu Meter
Meter Reading
Forward
CQ-403A
more than 90 g
(more than 3.18 oz)
Reverse
CQ-403R
more than 90 g
(more than 3.18 oz)
 Tape Tension  Measurement
Mode
Torqu Meter
Meter Reading
Forward
CQ-102C
30 - 65 g·cm
(0.42 - 0.90 oz·inch)
Forward
CQ-102C
0.5 - 4.5g·cm
Back Tension
(0.01 - 0.06 oz·inch)
Reverse
CQ-102RC
30 - 65 g·cm
(0.42 - 0.90 oz·inch)
Reverse
CA-102RC
0.5 - 4.5g·cm
Back Tension
(0.01 - 0.06 oz·inch)
FF, REW
CQ-201B
60 - 200 g·cm
(0.83 - 2.78 oz·inch)
– 20 –
TUNER  SECTION
(XR-C450: E, Saudi Arabia model only)
Cautions during repair
When the tuner unit is defective, replace it by a new one because
its internal block is difficult to repair.
FM Auto Scan/Stop Level Adjustment
Setting:
SOURCE button
: FM
FREQUENCY SELECT switch : 10 k
 0dB=1µV
FM RF signal
generator
Carrier frequency : 97.9 MHz
Output level
: 22 dB (12.6 
µ
V)
Mode
: mono
Modulation
: 1 kHz, 75 kHz deviation 
0.01 
µ
F
set
antenna jack (J1)
Procedure:
1. Set to the test mode. (See page 19).
2. Push the SOURCE button and set to FM.
Display
FM
SHUF1
3. Push the preset 3 button.
Display
FM
SHUF1
4. Adjust with the volume RV2 on TU1 so that the “FM” indica-
tion 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
Adjustment Location: See page 22.
SHUF1
Procedure:
1. Put the set into the FWD PB mode.
2. Adjust RV231 (L-CH) and RV131 (R-CH) so that the level meter
reading is –6±0.5 dB (0.37 to 0.41 V).
Adjustment Location: See page 22.
See the adjustment location from on page 22 for the ad-
justment.
0 dB=0.775 V
TAPE  DECK  SECTION
Tape Speed Adjustment
Procedure:
1. Put the set into the FWD PB mode.
set
+
test tape
WS-48A
(3 kHz, 0 dB)
LINE OUT 
10 k
speed checker
or
frequency counter
Speed checker
Frequency counter
–1.5 to +2.5%
2,955 to 3,075Hz
Specification: Constant speed
Adjustment Location: See page 22.
DOLBY Level Adjustment
Setting:
Preset 3 (DOLBY) button
: OFF
SEL (BAS) button
: Center
SEL (TRE) button
: Center
SEL (BAL) button
: Center
SEL (FAD) button
: Center
SEL (VOL) button
: Maximum
D-BASS control
: OFF
set
+
test tape
P-4-D400
(400Hz, 0dB)
main board
level meter
main board
TP (DOLBY )
TP (GND)
L-CH: IC301 
7
R-CH: IC301
Page of 43
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