Sony XR-CA420N Service Manual ▷ View online
3
XR-CA420N
SECTION 1
GENERAL
This section is extracted from in-
struction manual for XR-CA420.
struction manual for XR-CA420.
5
Location of controls
RELEASE
SEL
MODE
SRC
OFF
D
D-BASS
MBP
6
5
4
3
2
1
BTM
DSPL
DISC
REP
SHUF
BL SKIP
ATA
MTL
ATT
SEEK
AMS
SENS
SOURCE
Refer to the pages listed for details.
1 Volume +/– button 7, 10
2 MODE (o) button
During tape playback:
Playback direction change 7, 8
During radio reception:
BAND select 9
During CD/MD playback:
CD/MD unit select 12
3 SRC (SOURCE) (TUNER/TAPE/CD/MD)
button 7, 9, 12
4 SEL (select) button 7, 10, 11, 12, 13
5 Display window
6 MBP (My Best sound Position) button
12
7 D (D-BASS) button 11
8 Z (eject) button 7
9 RELEASE (front panel release) button
6, 15
q; ATT (attenuate) button 10
qa SENS button 10
qs RESET button (located on the front side
of the unit behind the front panel) 6
qd Frequency select switch
(located on the bottom of the unit)
See “Frequency select switch” in the
Installation/Connections manual.
See “Frequency select switch” in the
Installation/Connections manual.
qf Number buttons 8, 9, 11, 13, 14
During radio reception:
Preset number select 9
During tape playback:
(3)
REP 8
(5)
BL SKIP 8
(6)
ATA 8
During CD/MD playback:
(1)
DISC – 13
(2)
DISC + 13
(3)
REP 14
(4)
SHUF 14
qg BTM/MTL (
Best Tuning Memory/Metal
)
button 8, 9
qh DSPL (display mode change) button
7, 12, 13
qj OFF button* 6, 7
qk SEEK/AMS +/– button 8, 9, 10, 13
Seek 10
Automatic Music Sensor 8, 13
Manual search 13
Automatic Music Sensor 8, 13
Manual search 13
* Warning when installing in a car
without ACC (accessory) position on
the ignition key switch
Be sure to press (OFF) on the unit for two
seconds to turn off the clock display after
turning off the engine.
When you press (OFF) momentarily, the
clock display does not turn off and this
causes battery wear.
the ignition key switch
Be sure to press (OFF) on the unit for two
seconds to turn off the clock display after
turning off the engine.
When you press (OFF) momentarily, the
clock display does not turn off and this
causes battery wear.
XR-CA420N
4
SECTION 2
DISASSEMBLY
SET
2-3. MECHANISM DECK (MG-25F-136)
(Page 5)
2-2. COVER
(Page 4)
FRONT PANEL SECTION
(Note 3)
Note 1:
The process described in can be performed in any order.
Note 2:
Without completing the process described in , the next process can not be performed.
Note 3:
Illustration of disassembly is omitted.
2-4. MAIN BOARD
(Page 5)
2-5. HEAT SINK
(Page 6)
• This set can be disassembled in the order shown below.
2-1.
DISASSEMBLY FLOW
Note:
Follow the disassembly procedure in the numerical order given.
2-2.
COVER
1
screw
(PTT2.6
(PTT2.6
×
5)
2
cover
XR-CA420N
5
2-3.
MECHANISM DECK (MG-25F-136)
2-4.
MAIN BOARD
2
sub panel assy
1
screw (PTT2.6
×
6)
5
screw (PTT2.6
×
6)
3
flexible board
(CNP301)
(CNP301)
4
connector (CN351)
6
mechanism deck
(MG-25F-136)
(MG-25F-136)
1
four screws
(PTT2.6
(PTT2.6
×
6)
2
two ground point
screws
screws
3
rubber cap (25)
4
main board
1
two screws
(PTT2.6
(PTT2.6
×
10)
1
screw (PTT2.6
×
10)
XR-CA420N
6
2-5.
HEAT SINK
1
seven screws
(PTT2.6
(PTT2.6
×
10)
2
heat sink