Read Sony XM-7527 (serv.man3) Service Manual online
Subject: 1. CORRECTION
2. CHANGE OF BOARDS
3. CHANGE OF STRUCTURE
3. CHANGE OF STRUCTURE
SUPPLEMENT-2
File this supplement with the service manual.
XM-7527
SERVICE MANUAL
US Model
Canadian Model
AEP Mode
UK Model
E Model
(ENG-00003)
Page
INCORRECT
CORRECT
9
(4)
1. CORRECTION
Correct your service manual and service manual supplement-1 as shown below.
!
: indicates corrected portion
page (4) : Refer to SERVICE MANUAL SUPPLEMENT-1.
6
3
5
4
1
9
7
8
CNP804
POWER
DRIVE
Q942
THERMAL
DET
TH803
POWER
CONTROL
Q941
INVERTER
Q943
INVERTER
Q944
TO
POWER
BOARD
CNB804
09
8
2
4
NC
+B
MUTE
TH
GND
+15V
H-V
OFFSET
H-C
9
3
1
6
7
5
CNP804
POWER
DRIVE
Q942
THERMAL
DET
TH803
POWER
CONTROL
Q941
INVERTER
Q943
INVERTER
Q944
TO
POWER
BOARD
CNB804
09
^
^
#
#
#
#
#
#
#
#
#
2
(Page 15)
INVERTER
INVERTER
L907
0.45uH
L905
0.45uH
R948
220
R947
220
C961
0.01
C960
0.022
C959
0.022
R943
1k
R944
1k
C965
0.001
(Page 15)
INVERTER
INVERTER
L907
0.45uH
L905
0.45uH
R948
220
R947
220
C961
0.01
C960
0.022
C959
0.022
R943
1k
R944
1k
C965
0.001
$
$
$
#
#
#
%
Page
INCORRECT
CORRECT
11
• POWER section
IC901
IC901
µ
PC494G2
• POWER section
IC901
IC901
µ
PC494GS-T1
$
4
1
2
3
5
6
7 8
9
10
16 15
14
13
12 11
ERROR
0.1V
REG.
REF.
OSC
ERROR
SCHEMATIC DIAGRAM
– FILTER/AMPLIFIER SECTION –
!
: indicates corrected portion
page (7) : Refer to SERVICE MANUAL SUPPLEMENT-1.
Page
INCORRECT
CORRECT
13
(7)
4
1
2
3
5
6
7 8
9
10
16 15
14
13
12 11
ERROR
0.1V
REG.
REF.
OSC
ERROR
IC BLOCK DIAGRAM
!
: indicates corrected portion
3
SCHEMATIC DIAGRAM
– LED/POWER SECTION –
!
: indicates corrected portion
page (9) : Refer to SERVICE MANUAL SUPPLEMENT-1.
Page
INCORRECT
CORRECT
15
(9)
Q807, 808
OVER CURRENT
Q805, 806
OFFSET
$
$
F
G
E
C908
R909
R932
C919
R91
1
C909
R910
R907
R908
R931
TH901
Q915
D905
IC901
D803
L902
C907
C906
D906
IC902
C920
C917
C916
2
1
8
9
16
1
3
4
#
F
G
E
C908
R909
R932
C913
R91
1
C909
R910
R907
R908
R931
TH901
Q915
D905
IC901
D803
L902
C907
C906
D906
IC902
C920
C917
C916
2
1
8
9
16
1
3
4
PRINTED WIRING BOARD
– POWER SECTION –
!
: indicates corrected portion
page (8) : Refer to SERVICE MANUAL SUPPLEMENT-1.
Page
INCORRECT
CORRECT
14
(8)
4
IDLING CURRENT ADJUSTMENT
!
: indicates changed portion
Page
Former Type
New Type
8
3
Approximate adjustment values
• Adjust as follows so that the following voltages become
• Adjust as follows so that the following voltages become
0.4 to 0.5 mV .
(Board parts number : 1-675-244-11)
(Board parts number : 1-675-244-11)
#
• Adjust as follows so that the following voltages become
#
0.9 to 1.0 mV .
(Board parts number : 1-675-244-12 and higher)
But, the voltage when product doesn’t warm up is
0.6 to 0.7 mV .
(Board parts number : 1-675-244-12 and higher)
But, the voltage when product doesn’t warm up is
0.6 to 0.7 mV .
L channel :
Voltage between TP101 and TP102: Use VR101 of the ampli-
fier board
R channel :
Voltage between TP201 and TP202: Use VR201 of the ampli-
fier board
Voltage between TP101 and TP102: Use VR101 of the ampli-
fier board
R channel :
Voltage between TP201 and TP202: Use VR201 of the ampli-
fier board
Note:
^
Precautions regarding the replacement of parts for MOSFET:
Parts for the amplifier board suffix 11 (serial numbers 0010001
to 012800) are each paired parts. Consequently, when replacing
parts, if they are not replaced in pairs, it is impossible to guaran-
tee the above adjustment values.
Parts for the amplifier board suffix 11 (serial numbers 0010001
to 012800) are each paired parts. Consequently, when replacing
parts, if they are not replaced in pairs, it is impossible to guaran-
tee the above adjustment values.
3
Approximate adjustment values
• Adjust as follows so that the following voltages become
• Adjust as follows so that the following voltages become
0.4 to 0.5 mV .
(Board parts number : 1-675-244-11)
(Board parts number : 1-675-244-11)
L channel :
Voltage between TP101 and TP102: Use VR101 of the ampli-
fier board
R channel :
Voltage between TP201 and TP202: Use VR201 of the ampli-
fier board
Voltage between TP101 and TP102: Use VR101 of the ampli-
fier board
R channel :
Voltage between TP201 and TP202: Use VR201 of the ampli-
fier board
2. CHANGE OF BOARDS
The Amplifier Board and the Filter Board were changed.
Distinguish the new type, the old type with the printed wiring board number.
[AMPLIFIER BOARD]
[FILTER BOARD]
FILTER BOARD Parts number
Former type : 1-675-243-11
New type
Former type : 1-675-243-11
New type
: 1-675-243 -12, -13
AMPLIFIER BOARD Parts number
Former type : 1-675-240-11
New type
Former type : 1-675-240-11
New type
: 1-675-240 -12, -13
Part Ref. No.
Q110, 111
Q210, 211
Q210, 211
Replacement Part
X-3378-771-1
MOSFET Pair ASSY
MOSFET Pair ASSY
Remarks
They are supplied in pairs
