Sony MDS-JB920 Service Manual ▷ View online
– 73 –
IC200
CXD8767N
1
2
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INVI
128FsO
TEST
DINIT
MUTEL
OVFLAG
MUTER
MCKIN
DVSS1
DVDD1
64FSI
NU
XIN
XVSS
AVDDR2
AVSSR2
AVDDR1
64FSO
DVSS2
LVCKO
CKVdd
256FSO
DVDD2
R1(–)
R1(+)
R2(+)
R2(–)
AVSSR2
INVO
BCKI
DATA1
LRCKI
INIT
ATT
SHIFT
LATCH
SYSM
NU
NU
NU
DVSS1
DVDD1
XVDD
AVDDL2
L2(–)
L2(+)
AVSSL2
AVSSL1
L1(+)
L1(–)
AVDDL1
SYNC
VSUB
CKCTL
MUTE
XVDD
S/P
AT
T
MODE
AT
T
REGISTER
D/F
TIMNG
CIRCUIT
“0” DETECT
MUTE
CIRCUIT
1024Fs-CLOCK
BUFFER
Buffer(–)
Buffer(+)
Buffer(+)
Buffer(–)
PLM-R2
PLM-R1
Buffer(–)
Buffer(+)
Buffer(+)
Buffer(–)
PLM-L1
PML-L2
CLOCK
GENERA
TOR
CLOCK
BUFFER
IIR
FIR1
OVERFLOW DETECTER
OR
FIR2
FIR4
FIR3
IIR
ATT
X0.75
FIR1
OVERFLOW DETECTER
FIR2
FIR4
L.I.P
3rd order
NOISE
SHAPER
FIR3
ATT
X0.75
L.I.P
DITHER
3rd order
NOISE
SHAPER
– 74 –
IC300
SN74HC153ANS
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15
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10
9
1
2
3
4
5
6
7
8
2G
2C3
2C2 2C1 2C0
2Y
VCC
2C3
2C2 2C1 2C0
STROBE
2G
OUTPUT
2Y
A
SELECT
DATA INPUTS
B
B
A
A
B
B
A
A
1G
1C3 1C2
1C1 1C0
1Y
STROBE
1G
B
SELECT
1C3 1C2
1C1
1C0
OUTPUT
1Y
GND
DATA INPUTS
IC301, 704
SN74HCU04ANS-E20
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13
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11
10
9
8
1
2
3
4
5
6
7
VCC
GND
IC700
LA5632
1
–
+
12
DELAY
CIRCUIT
VREF
DELAY
CIRCUIT
3.3V
PH5
STBY
V
CC
ANA5
SYS3.3
B.BAK
AC
CD1
P. DOWN
GND
CD2
S. RESET
–
+
–
+
–
+
–
+
–
+
2
3
4
5
6
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8
9
10
11
IC400
LB1641
1
2
3
4
5
6
7
8
9
10
GND
MOTOR
DRIVE
NOISE
FILTER
CLAMP
FWD.IN
REV.IN
VCC 1
VCC 2
NOISE
FILTER
MOTOR
DRIVE
MOTOR
DRIVE
MOTOR
DRIVE
T.S.D
O.C.P
FWD/REV/STOP
CONTROL LOGIC
IC701
M5293L
2
5
5k
+
–
27k
OVERCURRENT
LIMITTER
OVERHEAT
PROTECTION
REFERENCE
VOLTAGE
GND
ON/OFF
IN
REFERENCE
VOLTAGE
VOLTAGE
OUT
3
4
1
– 75 –
SECTION 7
EXPLODED VIEWS
Les composants identifiés par une
marque
marque
! sont critiquens pour la
sécurité.
Ne les remplacer que par une pièce
portant le numéro spécifié.
Ne les remplacer que par une pièce
portant le numéro spécifié.
The components identified by
mark
mark
! or dotted line with mark
! are critical for safety.
Replace only with part number
specified.
specified.
• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
delay should be anticipated when ordering
these items.
• The mechanical parts with no reference num-
ber in the exploded views are not supplied.
• Hardware (# mark) list and accessories and
packing materials are given in the last of the
electrical parts list.
electrical parts list.
NOTE:
• -XX and -X mean standardized parts, so they
may have some difference from the original
one.
one.
• Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)
KNOB, BALANCE (WHITE) . . . (RED)
↑
↑
Parts Color Cabinet's Color
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
(1) CHASSIS SECTION
1
1-783-185-11 WIRE (FLAT TYPE) (21 CORE) (MAIN-DISP)
* 2
3-644-407-00 CLIP, AC WIRE E
3
4-886-821-11 SCREW, S TIGHT, +PTTWH 3X6
* 4
1-669-992-11 AC BOARD
5
3-710-901-01 SCREW, TAPPING (SILVER)
5
4-210-291-01 SCREW (CASE 3 TP2) (BLACK: EXCEPT UK)
5
4-999-877-01 SCREW (CASE) (UK)
6
4-997-138-01 CASE (4095269) (BLACK)
6
4-997-138-41 CASE (4095269) (SILVER)
7
4-999-839-01 SCREW (+BVTTWH M3), STEP
8
1-783-186-11 WIRE (FLAT TYPE) (21 CORE) (MAIN-BD)
9
1-783-187-11 WIRE (FLAT TYPE) (23 CORE)
* 10
4-923-873-01 BRACKET, CORD STOPPER
* 11
3-703-244-00 BUSHING (2104), CORD
! 12
1-558-568-21 CORD, POWER (AEP)
! 12
1-559-583-21 CORD, POWER (US, Canadian)
! 12
1-696-586-11 CORD, POWER (UK)
* 13
4-998-603-11 PANEL, BACK (AEP, UK)
* 13
4-998-603-31 PANEL, BACK (US)
* 13
4-998-603-41 PANEL, BACK (Canadian)
* 14
A-4724-089-A MAIN BOARD, COMPLETE (US, Canadian)
* 14
A-4724-090-A MAIN BOARD, COMPLETE (AEP, UK)
* 15
1-669-993-11 BAT BOARD
16
X-4949-523-1 FOOT ASSY (F50180S) (AEP, UK)
17
4-970-123-01 FOOT (F50180S) (US, Canadian)
18
4-970-124-01 CUSHION (F50180S)
19
1-500-051-11 BEAD, FERRITE (WITH CASE)
! T701
1-431-699-11 TRANSFORMER, POWER (US, Canadian)
! T701
1-431-700-11 TRANSFORMER, POWER (AEP, UK)
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8
9
5
7
7
2
3
4
15
5
5
6
5
#1
#1
#1
#1
#1
#1
#1
#1
#2
#2
#1
#1
MDM-5A
T701
not supplied
not supplied
not supplied
#1
#1
#1
not
supplied
supplied
AEP
UK
US. Canadian
19
1
Front panel section
– 76 –
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
(2) FRONT PANEL SECTION
51
4-998-590-01 PANEL, FRONT (BLACK)
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4-998-590-31 PANEL, FRONT (SILVER)
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4-942-568-41 EMBLEM (NO.5), SONY
53
4-998-607-01 INDICATOR (POWER)
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4-998-606-01 INDICATOR (MEGA)
55
4-950-189-01 KNOB (A) (VOL)
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4-998-598-01 WINDOW (DISPLAY)
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4-996-687-51 KNOB (AMS) (BLACK)
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4-998-597-01 KNOB (ANALOG) (BLACK)
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4-998-597-21 KNOB (ANALOG) (SILVER)
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4-998-596-01 KNOB (DIGITAL) (BLACK)
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4-998-596-21 KNOB (DIGITAL) (SILVER)
60
3-382-627-11 SPRING, RING
61
X-4949-651-1 BASE ASSY, PANEL (BLACK)
61
X-4950-253-2 BASE ASSY, PANEL (SILVER)
62
3-704-515-21 SCREW (BV/RING)
* 63
1-669-996-11 HP BOARD
64
4-998-592-01 BUTTON (POWER) (BLACK)
64
4-998-592-21 BUTTON (POWER) (SILVER)
65
4-997-211-01 BUTTON (MODE) (BLACK)
65
4-997-211-21 BUTTON (MODE) (SILVER)
66
4-996-690-11 LID (CARTRIDGE) (SILVER)
66
4-996-690-21 LID (CARTRIDGE) (BLACK)
67
4-976-593-01 SPRING (LID), TORSION
68
4-998-593-01 BUTTON (EDIT) (BLACK)
68
4-998-593-21 BUTTON (EDIT) (SILVER)
* 69
1-669-997-11 VOL BOARD
70
4-998-595-01 KNOB (SLIDE) (BLACK)
70
4-998-595-21 KNOB (SLIDE) (SILVER)
* 71
1-669-995-11 PSW BOARD
* 72
A-4724-044-A DISP BOARD, COMPLETE (AEP, UK)
* 72
DISP BOARD, COMPLETE (US, Canadian)
73
4-998-594-01 BUTTON (EJECT) (BLACK)
73
4-998-594-21 BUTTON (EJECT) (SILVER)
74
4-996-689-21 BUTTON (MAIN) (BLACK)
74
4-996-689-51 BUTTON (MAIN) (SILVER)
75
3-354-981-01 SPRING (SUS), RING
64
61
63
62
71
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62
62
72
62
69
62
73
74
60
59
75
75
58
67
70
68
70
65
66
57
55
54
53
52
56
#1
not supplied
not supplied
supplied with
RV760
RV760
supplied with J790
supplied with RV790
51
Click on the first or last page to see other MDS-JB920 service manuals if exist.