Sony XR-M500R / XR-M550 Service Manual ▷ View online
30
30
XR-M500R/M550
7-4.
BLOCK DIAGRAM – POWER SUPPLY Section –
05
SYSTEM CONTROLLER
IC601 (4/4)
TH301
LCD-SW1
LCD-SW2
D308
D318
D315
ILL IN
81
ACC IN
ACC
CN301 (2/2)
(POWER CONNECTOR)
7
D316
ACCESSORY
CHECK
Q608
D905
Z
95
CLOSE SW 99
100
TU-ON
OPEN SW
114
FLS-PWON 82
PW ON 83
ILL
14
B+
16
ANT-R
6
ILLUMINATION
LINE DETECT
Q607
ANTENNA
REMOTE SWITCH
Q300, 301
B+ SWITCH
Q900, 901
D904
CASSETTE SLOT
INDICATOR
FRONT PANEL
OPEN/CLOSE DETECT
TH300
D309
AMP-R
5
AMP
REMOTE SWITCH
Q302, 303
BATT B+
(Page 28)
I
AMP ON
+9V REGULATOR
IC605
+5V REGULATOR
Q100
+5V REGULATOR
Q106, 107
+6V REGULATOR
IC604
RIPPLE FILTER
IC604
B+ SWITCH
Q103, 104
D609
B+ SWITCH
Q903, 904
LED917 – 921, LSW901 – 911,
LSW913 – 919, 921 – 925
(FOR ILLUMINATION)
B+ SWITCH
Q901, 902
LCD +9V
LCD DRIVER
(IC901, 902)
B+
TUNER +5V
TUNER CIRCUIT/
RDS DECODER (IC701)
B+ (XR-M500R)
B+
SPECTRUM ANALYZER
CONTROL (IC102)
B+
TUNER VCC
BACK UP +5V
LED901
(ILLUMINATION)
LSW912
Z
(XR-M500R)
LED917 – 921, LSW902, 904 – 911,
LSW913 – 918, 921 – 925
(FOR ILLUMINATION)
(XR-M550)
(Page 29)
L
LCD-SW1, LCD-SW2
K
(Page 29)
ILL ON
CLOSE
OPEN
31
31
XR-M500R/M550
Note on Printed Wiring Board:
•
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
b
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side seen from
(Conductor Side)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component Side)
the parts face are indicated.
7-5.
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Schematic Diagram:
• 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.
•
f
: internal component.
•
C
: panel designation.
•
U
: B+ Line.
•
H
: adjustment for repair.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
(
no mark : FM
(
) : AM (MW)
[
] : LW
〈〈
〉〉
: TAPE PLAYBACK
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
• Signal path.
F
: FM
f
: AM (MW/LW)
L
: BUS AUDIO IN
E
: TAPE PLAY
• Please refer to servicing notes (page 3) for system of
TYPE A, B, C and D.
• Waveforms
– MAIN Board –
– MAIN Board –
1
IC701
5
OSCI
2
IC601
ud
XIA
3
IC601
od
X1
4
IC607
ih
EXTAL
– DISPLAY Board –
1
IC901
y;
OSC
2.4 Vp-p
232 ns
3.1 Vp-p
306
µ
s
3 Vp-p
54 ns
3.2 Vp-p
22.8
µ
s
3.2 Vp-p
22.8
µ
s
5.5 Vp-p
272 ns
2
IC902
y;
OSC
32
32
XR-M500R/M550
7-6.
PRINTED WIRING BOARD – MAIN Board (Component Side) –
IC502
G-2
IC503
H-3
IC601
F-6
IC602
E-5
IC603
D-5
IC606
J-7
IC607
I-8
IC700
J-12
IC750
F-14
Q100
E-13
Q101
D-12
Q102
E-12
Q103
E-8
Q104
F-8
Q105
H-8
Q106
K-6
Q107
K-6
Q200
B-11
Q201
B-11
Q204
C-12
Q220
I-6
Q221
H-6
Q222
I-6
Q250
B-10
Q251
B-10
Q254
C-12
Q300
E-4
Q302
E-4
Q401
G-3
Q402
E-3
Q403
F-3
Q404
H-11
Q500
I-3
Q501
I-2
Q502
I-2
Q503
F-4
Q504
F-4
Q505
G-5
Q506
I-4
Q600
D-6
Q601
D-6
Q602
G-8
Q603
G-7
Q604
J-3
Q605
F-9
Q606
E-9
Q607
D-4
Q608
D-4
Q611
I-10
Q750
F-13
Q751
G-14
Ref. No.
Location
Ref. No.
Location
D100
D-13
D101
C-13
D102
G-8
D103
I-9
D104
D-13
D200
B-9
D201
I-5
D202
H-6
D203
B-9
D204
A-9
D300
C-7
D301
B-7
D302
B-6
D303
C-7
D304
B-8
D305
C-8
D306
B-8
D307
C-8
D310
B-3
D311
C-4
D312
E-3
D315
B-5
D316
B-6
D318
B-5
D400
F-3
D500
F-4
D501
B-2
D502
I-4
D505
F-4
D506
G-4
D507
G-4
D508
G-4
D509
H-2
D511
H-4
D512
H-4
D513
G-4
D604
D-2
D606
H-5
D607
D-2
D610
J-3
D611
J-6
D627
J-9
D628
I-5
D701
F-8
D750
F-13
IC100
F-11
IC101
G-9
IC102
J-6
IC202
C-11
IC400
F-3
IC401
H-11
IC501
H-4
• Semiconductor Location
(Page 40)
33
33
XR-M500R/M550
7-7.
PRINTED WIRING BOARD – MAIN Board (Conductor Side) –
1
9
WHT/BLK
WHT
GRN/BLK
GRN
VIO/BLK
VIO
GRY/BLK
GRY
LIGHT BLU
BLU/WHT
ORG/WHT
BLU
RED
YEL
BLK
FRONT LCH (–)
FRONT LCH (+)
REAR LCH (–)
REAR LCH (+)
REAR RCH (–)
REAR RCH (+)
FRONT RCH (–)
FRONT RCH (+)
ATT
AMP REM
ILL IN
ANT REM
ACC
BATT
GND
(M550)
2
10
3
11
4
12
5
13
6
14
7
15
8
16
1
9
WHT/BLK
GRN/BLK
VIO/BLK
GRY/BLK
LIGHT BLU
BLU/WHT
ORG/WHT
YEL
WHT
GRN
VIO
GRY
BLU
RED
BLK
2
10
3
11
4
12
5
13
6
14
7
15
8
16
RL+
RL–
GRN/BLK
WHT/BLK
GRY/BLK
VIO/BLK
GRN
WHT
GRY
VIO
FL+
FL–
FR+
FR–
RR+
RR–
ACC
GND
BLK
ORG/WHT
YEL
RED
BLU
ANT REM
ILL
NC
BATT
NC
NC
ATT
AMP REM
(M500R)
TO
CN301
• Semiconductor Location
D619
J-9
D620
J-9
D621
K-9
D623
J-9
D624
J-10
D625
K-10
D626
J-9
IC200
D-10
IC201
D-11
IC300
A-8
IC500
H-3
IC604
C-1
IC605
D-1
Q301
E-3
Q303
E-3
Q400
G-3
Ref. No.
Location
Ref. No.
Location
D308
D-4
D309
D-4
D317
C-2
D320
A-6
D401
D-2
D503
B-3
D504
B-3
D510
I-3
D515
G-2
D516
G-2
D601
F-5
D602
F-5
D603
F-5
D608
F-4
D609
E-5
D612
J-2
D613
J-2
D617
K-9
D618
K-9
(Page 38)
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