Sony HCD-LX30 / HCD-LX5 / HCD-LX50 / HCD-LX6 / LBT-LX30 / LBT-LX5 / LBT-LX50 / LBT-LX6 Service Manual ▷ View online
17
17
HCD-LX5/LX6/LX30/LX50
4-7.
SCHEMATIC DIAGRAM – AUDIO Board –
•
See page 36 for IC Block Diagrams.
• Voltages are dc with respect to ground under no-signal
conditions.
no mark : TAPE PLAY
(
no mark : TAPE PLAY
(
) : RECORD
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
Les composants identifiés par une marque
0
sont
critiques pour la sécurité.
Ne les remplacer que
par une pièce portant le numéro spécifié.
PB LEVEL (L)
(DECK A)
PB LEVEL (R)
(DECK A)
PB LEVEL (L)
(DECK B)
PB LEVEL (R)
(DECK B)
PB EQ AMP
(DECK A)
PB EQ AMP
(DECK B)
SWITCHING
REC BIAS (L)
(DECK B)
REC BIAS (R)
(DECK B)
BIAS OSC
REC BIAS
-6.8
(PLAYBACK)
E
NC
A +7.5V
APB–LCH
APB–RCH
AGND
BPB–LCH
BPB–RCH
A –7.5V
–VBIAS (–7.5V)
+VBIAS (+7.5V)
B–REC–RCH
B–REC–LCH
TC–HEAD–GND
(Page21)
18
18
HCD-LX5/LX6/LX30/LX50
4-8.
PRINTED WIRING BOARD – LEAF SW Board –
•
See page 11 for Circuit Boards Location.
05
DECK A
PLUNGER
DECK B
PLUNGER
(DECK A PLAY)
(DECK A HALF)
(DECK A 120/70)
(DECK A REC)
(DECK B HALF)
(DECK B PLAY)
(DECK B 120/70)
(DECK B REC)
12
12
F
4
1
2
3
4
1
2
3
(
)
4-9.
SCHEMATIC DIAGRAM – LEAF SW Board –
DECK B
PLUNGER
DECK A
PLUNGER
(CAPSTAN)
(DECK A 120/70)
(DECK A HALF)
(DECK A REC)
(DECK B HALF)
(DECK B REC)
(DECK B 120/70)
ROTATION DETECT SENSOR
(DECK A)
ROTATION DETECT
SENSOR (DECK B)
(DECK A PLAY)
(DECK B PLAY)
F
CONTROL SWITCH
CAPM–
CAPM+
CAPM–H/L
A–TRGM
TRGM–GND
B–TRGM
A–SHUT
DGND
A–HALF
+5V
A–120/70
B–SHUT
A PLAY
B–HALF / REC–A / REC–B
B–120/70
B PALY
NC
• Voltages are dc with respect to ground under no-signal
conditions.
no mark : TAPE PLAY
(
no mark : TAPE PLAY
(
) : RECORD
∗
: Impossible to measure
(Page 19)
(Page 21)
19
19
HCD-LX5/LX6/LX30/LX50
4-10.
PRINTED WIRING BOARD – MAIN Board –
•
See page 11 for Circuit Boards Location.
• Semiconductor
Location
Ref. No.
Location
D191
B-7
D192
B-7
D193
A-6
D194
B-6
D333
I-3
D334
I-3
D335
I-4
D336
I-4
D501
I-6
D534
G-7
D801
I-6
D802
H-7
D803
H-8
D804
I-7
D805
H-8
D806
H-7
D807
H-8
D808
I-6
D911
E-10
D912
F-9
D913
F-10
D931
G-10
D951
B-10
IC101
D-3
IC181
B-5
IC191
B-7
IC301
G-2
IC501
H-6
IC601
B-1
IC781
A-12
IC801
I-7
IC901
C-11
IC911
E-10
IC931
G-10
IC932
G-11
IC932
G-12
IC933
H-11
IC951
B-11
Q111
D-5
Q112
D-5
Q113
D-5
Q115
D-4
Q161
E-5
Q162
E-5
Q163
E-5
Q165
E-3
Q331
I-2
Q332
I-2
Q333
I-2
Q334
I-2
Q335
I-4
Q336
I-3
Q337
I-3
Q338
I-4
Q339
I-4
Q340
I-3
Q341
I-3
Q342
I-3
Q343
I-3
Q801
H-7
Q802
H-9
Q803
H-8
Q804
I-8
Q901
C-11
Q902
B-11
Q903
B-11
Q904
B-11
Q905
B-11
Q906
B-11
Q911
F-9
Q912
F-9
Q913
F-9
Q914
F-9
Q931
G-10
Q932
G-9
Q961
A-10
Q962
A-10
(Page 26)
(Page 16)
(Page 18)
(Page 30)
(Page 32)
(Page 32)
(Page 14)
(Page 12)
(Page 24)
20
20
HCD-LX5/LX6/LX30/LX50
4-11.
SCHEMATIC DIAGRAM – MAIN Board (1/3) –
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : TUNER (FM/AM)
no mark : TUNER (FM/AM)
(Page
22)
(Page
21)
(Page
21)
(Page
21)
(Page
22)
(Page 31)
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