Read Sony XM-2252HX Service Manual online
XM-2252HX
– 9 –
SECTION 5
DIAGRAMS
5-1. IC BLOCK DIAGRAMS
IC101- 103, 201- 203 NJM4580E
IC901
µ
PC494GS
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
For schematic diagrams.
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
¢
: internal component.
•
C
: panel designation.
•
U
: B+ Line.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• Voltage and waveforms are dc with respect to ground
under no-signal conditions.
no mark : POWER ON
no mark : POWER ON
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
• Signal path.
F
: AUDIO
For printed wiring boards.
Note:
• X
: parts extracted from the component side.
•
¢
: internal component.
1
2
3
4
5
6
7
8
A OUT
A –IN
A +IN
V–
V+
B OUT
B –IN
B +IN
A
B
4
1
2
3
5
6
7 8
9
10
16 15
14
13
12 11
ERROR
0.1V
REG.
REF.
OSC
ERROR
SECTION 4
DISASSEMBLY
Note :
Follow the disassembly procedure in the numerical order given.
4-1. BOTTOM PLATE, PANEL (FRONT), PANEL (REAR) REMOVAL
4-2. AMP/POWER BOARD REMOVAL
Note :
Amplifier board and Power board are not
separated because the board is long and heavy.
Take care not to damage the board when removing.
separated because the board is long and heavy.
Take care not to damage the board when removing.
Heat sink block
7
Auto fuse
(F902)
6
Connector
(CNP802)
8
Auto fuse
(F901)
9
Screw
(BTP 3x8)
!£
Screw
(BTP 3x8)
0
Three screws
(BTP 3x8)
!¡
Three screws
(BTP 3x8)
!¢
Three screws
(BTP 3x8)
!∞
Two screws
(BTP 3x8)
!§
Screw
(BTP 3x8)
!™
Panel (Front)
!¶
Panel (Rear)
2
Three screws
(BTP 3x5)
3
Two screws
(BTP 3x5)
4
Two screws
(BTP 3x5)
1
Three screws
(BTP 3x5)
5
Bottom plate
7
Heat sink
6
Light interseption rubber
3
Four screws
(P 4x10)
4
Four screws
(P 4x10)
2
Four screws
(P 4x10)
1
Four screws
(P 4x10)
5
Amp/power board
Amplifier board
Power board
– 10 –
• WAVEFORMS
1
2
3
4
14Vp-p
27
µ
sec
29Vp-p
27
µ
sec
29Vp-p
27
µ
sec
60Vp-p
27
µ
sec
Click on the first or last page to see other XM-2252HX service manuals if exist.