Sony DHC-EX880MD / DHC-MD717 / ST-EX880 / ST-MS717 Service Manual ▷ View online
– 27 –
• IC Block Diagrams
– MAIN Board –
– MAIN Board –
IC1
LA1835
IC51
LC72130
ALC
BUFF
AM
OSC
AM
MIX
AM
RF. AMP
AGC
S METER
LEVEL
DET
FM
IF
AM
DET
S-CURVE
AM/FM
IF
BUFF
REG
TUNING
DRIVE
COMP
GND
AM/FM
SW
VCC
PHASE
DET
PILOT
DET
VCO
FF
STEREO
DRIVE
TRIG
STEREO
SW
MUTE
FF
FF
FM
IF
FM
DET
DECODER
ANTI BIRDIE
1
2 3
4
5
6
7
8
9
10
20
19
18
17 16
15
14
13
12
11
21
22
23
24
25
26
27
28
29
30
FM-SD
AM-OSC
FM-AFC
AM-RF-IN
AGC
AM. CUT
AM/FM
VCO
MPX-IN
OUT R
OUT L
AMP-IN R
AMP-IN L
R
L
VCO-STOP
ST-LED
AM/FM
AM. SD
AM. SD
IF-BUFF
VCC
DET
FM-IN
AM-MIX
IF
REG
AM-IF
GND
TU-LED
FM
AM
PHASE DETECTOR
CHARGE PUMP
SWALLOW COUNTER
1/16, 1/17 4BITS
12BITS PROGRAMMABLE
DRIVER
UNIVERSAL
COUNTER
REFERENCE
DIVIDER
POWER
ON
RESET
1/2
C
2
B
I/F
1
2
3 4 5 6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
21
22
23
24
XOUT
VSS
AOUT2
AIN2
PD2
PD1
AIN1
AOUT1
VDD
FMIN
AMIN
IO2
XIN
D0
CL
D1
CE
BO5
BO1
BO2
BO3
BO4
IO1
IFIN
UNLOCK
DETECTOR
DATA SHIFT REGISTER LATCH
– 28 –
– RDS Board –
IC302
SAA6579 (ST-EX880 ONLY)
– PANEL Board –
IC901
M66004M6FP
QUALITY BIT
GENERATOR
DEFFERENTIAL
DECODER
BIPHASE
SYMBOL
SYMBOL
DECODER
OSCILLATOR
AND
DIVIDER
57kHz
BANDPASS
(8th ORDER)
CONTAS LOOP
VARIABLE AND
FIXED DIVIDER
FIXED DIVIDER
REFERENCE
VOLTAGE
ANTI-
ALIASING
FILTER
CLOCKED
COMPARATOR
TEST LOGIC AND OUTPUT
SELECTOR SWITCH
RECONSTRUCTION
FILTER
14
15
16
13
12
11
10
9
3
2
1
4
5
6
7
8
CLOCK REGENERATION
AND SYNC
VP1
RDCL
TS7
OSCO
OSCI
V
DDD
V
SSD
TEST
TSTL
D
QUAL
RDDA
Vref
MUX
V
DDA
V
SSA
CIN
SCOUT
SEGMENT
OUTPUT
CIRCUIT
CIRCUIT
(35BIT x 16)
DECODER
INDICATION
CODE
RESISTOR
(8BIT x 16)
DECODER
(35BIT x 16)
CODE/COMMAND
CONTROL
CIRCUIT
INDICATION
CONTROL
RESISTOR
INDICATION
CONTROLLER
DIGIT OUTPUT
CIRCUIT
CODE
WRITE
CODE SELECT
SERIAL
RECEIVE
CIRCUIT
OUTPUT
PORT
(2BIT)
CLOCK
GENERATOR
CIRCUIT
RAM
WRITE
21
20
19
22
13
32
60
64 - 61
59 - 33
23 - 31
1 - 12
17 • 18
14 • 15 • 16
G13
|
G16
V
CC
2
P1
|
P27
V
SS
XIN
XOUT
V
CC
1
RST
G12
|
G1
VP
CS
SCK
SDATA
P36
|
P28
– 29 –
SECTION 6
EXPLODED VIEWS
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 is given in the last of
the 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
• Abbreviation
HK : Hong Kong
MY : Malaysia
JE : Tourist
SP : Singapore
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
(1) CASE, FRONT PANEL SECTION
6
6
7
#2
3
8
4
5
1
2
10
#2
9
1
4-995-074-01 KNOB (JOG)
2
4-988-161-01 SPRING, RING
3
X-4949-861-1 PANEL ASSY, FRONT (ST-EX880)
3
X-4949-873-1 PANEL ASSY, FRONT (ST-MS717)
* 4
A-4407-398-A PANEL BOARD, COMPLETE (JE)
* 4
A-4407-880-A PANEL BOARD, COMPLETE (AEP, UK)
* 4
A-4407-884-A PANEL BOARD, COMPLETE (MY, SP, HK)
5
1-773-110-11 WIRE (FLAT TYPE) (19 CORE)
6
3-363-099-01 SCREW (CASE 3 TP2)
* 7
4-900-196-11 CASE
8
4-951-620-01 SCREW (2.6X8), +BVTP
9
4-962-708-01 EMBLEM (4-A), SONY
10
4-995-083-21 PLATE (ST), ORNAMENTAL (ST-EX880)
10
4-995-083-31 PLATE (ST), ORNAMENTAL (ST-MS717)
– 30 –
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
(2) CHASSIS SECTION
51
52
53
56
55
#3
T701
54
#1
#2
not supplied
57
#1
#2
60
AEP, UK
AEP, UK, MY, SP,
HK
HK
JE
58
CN951
AEP, MY,SP,
HK
HK
MY, SP
UK
HK
JE
59
61
59
61
59
61
62
UK, HK
AEP, MY, SP, JE
51
X-4949-526-1 FOOT (F) ASSY
52
3-703-244-00 BUSHING (2104), CORD
* 53
4-949-235-01 HOOK (AEP, MY, SP, JE)
* 54
4-995-091-11 PANEL (ST), BACK (MY, SP, HK)
* 54
4-995-091-21 PANEL (ST), BACK (ST-EX880)
* 54
4-995-091-31 PANEL (ST), BACK (JE)
* 55
A-4407-399-A MAIN BOARD, COMPLETE (MY, SP, HK)
* 55
A-4407-876-A MAIN BOARD, COMPLETE (AEP, UK)
* 55
A-4407-885-A MAIN BOARD, COMPLETE (JE)
56
4-965-822-01 FOOT
* 57
1-667-607-11 TRANSFORMER BOARD
* 58
1-667-608-11 AC OUTLET BOARD (JE)
! 59
1-558-943-41 CORD, POWER (JE)
! 59
1-575-651-21 CORD, POWER (AEP, MY, SP, HK)
! 59
1-696-571-11 CORD, POWER (UK)
* 60
A-4407-877-A RDS BOARD, COMPLETE (AEP, UK)
! 61
1-569-007-11 ADAPTOR, CONVERSION 2P (JE)
! 61
1-569-008-11 ADAPTOR, CONVERSION 2P (MY, SP)
! 61
1-770-019-11 ADAPTOR, CONVERSION PLUG 3P (HK)
62
4-956-370-12 BAND, PLUG FIXED (UK, HK)
! CN951
1-526-794-11 OUTLET, AC (EXCEPT JE)
! T701
1-431-833-11 TRANSFORMER, POWER (ST-EX880)
! T701
1-431-834-11 TRANSFORMER, POWER (ST-MS717)
The components identified by mark
! or dotted
line with mark
! are critical for safety.
Replace only with part number specified.
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