Sony XR-L240 Service Manual ▷ View online
17
XR-L240
Adjustment Location:
– Set Upper View –
TU100
RV2
FM Stereo Separation Adjustment
FM Stereo Separation Adjustment
RV100
FM RDS S-Meter Adjustment
FM RDS S-Meter Adjustment
Tape Speed Adjustment
RV3
FM Auto Seek/Stop Level Adjustment
FM Auto Seek/Stop Level Adjustment
RV1
MW Auto Seek/Stop Level Adjustment
MW Auto Seek/Stop Level Adjustment
18
XR-L240
SECTION 5
DIAGRAMS
Note on Schematic Diagram:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
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.
•
C
: panel designation.
•
A
: 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
(
) : 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.
F
: FM
f
: MW/LW
E
: TAPE PLAYBACK
L
: BUS AUDIO IN
• Abbreviation
AMBER : Amber illumination type
GREEN : Green illumination type
GREEN : Green illumination type
Note on Printed Wiring Board:
•
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
z
: Through hole.
•
: Pattern from the side which enables seeing.
•
: Carbon pattern.
(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.
5-1.
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
XR-L240
19
19
R27
EC
B
Q741
C741
R740
R809
R808
R807
R806
R811
R651
R810
BC
E
Q652
BC
E
Q651
BC
E
Q650
C81
IC2
3
4
2
1
EC
B
Q732
EC
B
Q731
C731
R805
R732
R81
C733
R11
R608
EC
B
Q733
EC
B
Q734
E
C
B
Q730
R700
R705
EC
B
Q702
EC
B
Q704
EC
B
Q750
C750
R753
R751
R752
D750
K
A
C4
C3
R9
R8
R10
C1
C2
R4
R3
C5
C21
C22
R22
R23
C82
R644
BC
E
Q640
BC
E
Q720
BC
E
Q721
D720
A
K
R643
R642
R641
R851
R720
C721
R850
EC
B
Q725
BC
E
Q291
BC
E
Q292
R28
R29
R30
R31
C500
C465
C290
R290
R635
C50
C504
R502
R620
R621
R500
EC
B
Q621
C621
C501
C467
C464
C466
BC
E
Q620
R503
C443
C442
R452
R451
BC
E
Q451
EC
B
Q452
R460
R456
C458
C456
R459
R455
C454
C460
R461
R457
R458
R454
BC
E
Q453
EC
B
Q450
R450
R453
C440
C441
C415
C414
R411
R410
C413
C411
C164
C401
C425
R421
R420
C424
C423
C421
C403
R401
BC
E
Q151
EC
B
Q150
C51
C52
R41
R62
R65
R61
R69
R1
C8
R73
R70
R71
R72
R68
C201
R12
C202
R202
R201
R200
C200
C203
R203
C205
C214
C213
C211
C209
EC
B
Q250
C255
R254
D251
K
A
D252
K
A
C257
C258
R257
C204
R152
R358
R356
C358
C367
R361
C366
R362
C357
R365
R357
C359
R359
R360
R255
R256
R258
C256
C254
R253
R252
C250
C252
R250
C251
R251
R150
C131
R131
EC
B
Q130
C363
R352
C352
C365
R350
C350
C364
C351
R351
R363
R354
R355
C362
EC
B
Q120
R122
R130
R120
C130
R123
R121
C104
R855
R115
C253
R118
C361
C356
C165
BC
E
Q121
R108
C109
R103
C103
C101
L101
C702
C700
R75
C506
R730
R209
R853
IC400
1
18
36
19
IC1
1
25
26
50
51
75
76
100
IC200
11
20
10
1
IC350
5
8
4
1
IC250
5
8
4
1
L710
D710
D651
R652
R650
D650
C730
+
D731
R731
C732
C734
+
+
C743
+
D700
CN350
1
8
1-683-562-
11
Q700
Q703
R702
R701
R703
S1
(RESET)
R607
X4
R733
R105
R107
R106
L1
R21
C742
C740
+
+
C720
+
D640
R640
C722
+
Q740
D741
D740
C710
+
CN700
(POWER)
16
8
9
1
F901
18
17
19
D722
Q722
R722
R721
R26
X1
R43
X200
R622
R501
R34
R33
R32
C7
+
D721
IC500
25
24
1
2
D500
D501
D503
D502
C507
+
D290
Q290
C291
+
D622
D620
C503
+
C622
C620
+
+
R104
R102
R206
C208
+
C150
+
D150
R207
C420
C400
+
+
C354
C161
C124
+
+
+
C422
C426
+
+
C402
+
D450
C452
C451
+
+
C450
C453
+
+
C416
+
C412
C410
C125
+
+
+
C355
C160
+
+
1
26
TU100
FM/AM TUNER UNIT
14
13
C360
C353
R364
+
+
D250
CN600
1
2
11
12
A
CONTROL BOARD
CN900
R606
R605
R604
R603
R602
R601
R600
RV100
CP100
ANT100
(FM/AM ANTENNA)
C102
L100
+
1
8
M901
(CAPSTAN/REEL)
M
RED
BLU
S901
(DIRECTION)
REV
m
FWD
BRN
BRN
ORG
ORG
S902
(FF/REW)
(OFF : PLAYBACK)
S903
(TAPE DETECT)
(ON : TAPE IN)
YEL
YEL
TO
CN350
CN300
1
3
HP901
PLAYBACK
HEAD
C640
+
D505
D504
D507
D506
D351
R704
MAIN BOARD
R724
R723
R706
R353
C212
A
B
C
D
E
F
G
H
I
1
2
3
4
5
6
7
8
9
10
11
12
13
J
(CHASSIS)
R366
R7
(CHASSIS)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
TO
CN700
C505
(TYPE B)
C502
+
(TYPE B)
WHT
GRN
VIO
GRY
WHT/BLK
GRN/BLK
VIO/BLK
GRY/BLK
1
2
3
4
5
6
7
8
1
2
3
5
6
7
8
GRN
WHT
GRY
VIO
VIO/BLK
GRY/BLK
WHT/BLK
GRN/BLK
4
YEL
BLU
RED
BLK
BLK
YEL
BLU
RED
5-2.
PRINTED WIRING BOARD – MAIN Board –
•
Refer to servicing note (page 2) for discrimination of TYPE A/B.
Ref. No.
Location
• Semiconductor
Location
D150
G-5
D250
I-5
D251
H-4
D252
H-4
D290
D-7
D351
G-4
D450
D-5
D500
B-7
D501
B-7
D502
B-7
D503
B-7
D504
C-7
D505
C-7
D506
C-7
D507
C-7
D620
D-6
D622
D-5
D640
D-10
D650
F-11
D651
F-12
D700
H-11
D710
D-11
D720
D-9
D721
D-8
D722
D-8
D731
G-12
D740
D-10
D741
E-10
D750
I-10
IC1
G-8
IC2
F-11
IC200
H-6
IC250
H-4
IC350
G-4
IC400
E-4
IC500
B-7
Q120
G-3
Q121
F-2
Q130
G-3
Q150
G-5
Q151
F-5
Q250
H-5
Q290
D-7
Q291
D-7
Q292
E-7
Q450
C-4
Q451
C-4
Q452
C-5
Q453
C-3
Q620
D-5
Q621
E-6
Q640
E-10
Q650
F-11
Q651
F-11
Q652
F-11
Q700
I-11
Q702
I-10
Q703
I-11
Q704
I-10
Q720
E-9
Q721
E-9
Q722
D-8
Q725
E-8
Q730
H-11
Q731
G-11
Q732
G-11
Q733
H-11
Q734
H-10
Q740
D-10
Q741
D-10
Q750
I-10
R703
I-10
(Page 22)
Ver 1.2
XR-L240
20
20
5-3.
SCHEMATIC DIAGRAM – MAIN Board (1/2) –
•
See page 24 for Waveforms.
•
See page 24 for IC Block Diagram.
(Page 23)
(Page 21)
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