Sony HCD-RG221 / MHC-RG221 Service Manual ▷ View online
37
37
HCD-RG221
5-14. PRINTED WIRING BOARD – TRANS SECTION –
• See page 21 for Circuit Boards Location.
•
: Uses unleaded solder.
Ref. No.
Location
D901
B-3
D902
B-2
D903
B-2
D904
B-2
D905
B-2
D906
C-10
D908
C-8
Q902
C-9
• Semiconductor
Location
*
*
Not replaceable
built in transformer
built in transformer
POWER TRANSFORMER
(MAIN)
POWER TRANSFORMER
(SUB)
1
1
1
3
3
2
E
1
10
MAIN
BOARD
CN303
(Page 29)
F
AMP
BOARD
CN442
(Page 38)
N
3
4
1
3
AC
IN
1
2
1
2
A
B
C
D
E
F
3
4
5
6
7
8
9
10
11
12
3
4
JW912
E2, E51
MX, AR
JW907
E2, E51, MX
AR
JW905
JW903
AR
EXCEPT AR
JW925
JW904
JW901
1
2
E2, E51
MX, AR
MX, AR
MX, AR
E2, E51
VOLTAGE
SELECTOR
S901
220V
120V
230-240V
MX
AR
38
38
HCD-RG221
5-15. PRINTED WIRING BOARD – AMP SECTION –
• See page 21 for Circuit Boards Location.
•
: Uses unleaded solder.
Ref. No.
Location
D401
F-3
D441
D-6
D442
D-6
D443
D-2
D481
D-6
D482
D-4
D483
C-9
IC441
B-7
Q441
D-6
Q442
D-6
Q481
D-9
Q482
D-8
Q483
D-8
Q484
D-8
Q485
C-4
Q486
C-4
Q487
C-4
Q488
C-5
Q489
C-9
• Semiconductor
Location
IC441
SPEAKER
(IMPEDANCE USE 6–16 )
+
-
+
-
L
R
(CHASSIS)
(CHASSIS)
(CHASSIS)
MAIN
BOARD
CN307
(Page 29)
TRANS
BOARD
CN905
(Page 37)
E
E
E
E
E
E
E
E
E
E
1
3
13
1
1
2
A
B
C
D
E
F
G
3
4
5
6
7
8
9
10
39
39
HCD-RG221
5-16. SCHEMATIC DIAGRAM – AMP POWER SECTION –
30
JW901
JW
JW925
JW
C403
C404
C441
C442
C908
EP401
EP402
Q441
Q442
Q481
Q482
Q483
Q484
Q485
Q486
Q487
R441
R442
R446
R458
R459
R460
R495
RY901
D908
C
4
0
7
C
4
0
8
D
9
0
6
R492
R494
JW917
JW401
J
W
4
0
2
JW403
JW404
RY441
R481
R487
R488
R490
C911
C447
C448
L441
L442
R461
R462
D401
IC441(1/2)
IC441(2/2)
TH441
JW909
C405
C406
R451
R452
R411
R412
C446
JW441
JW442
FH908
FH907
FH910
FH912
FH909
FH911
F904
F905
F906
FH913
FH914
F907
C906
R908
C910
C909
R903
R904
Q902
C
9
2
4
C
9
2
5
C
9
2
6
CN906
CN902
D905
D903
D902
D904
D
9
0
1
JW906
JW910
JW902
W001
CN901
PT901
CN905
CN907
C402
R
4
5
6
D
4
4
2
D
4
4
1
C489
R402
EP491
Q489
R467
R491
C445
R413
R493
C488
R447
C451
C453
D
4
8
1
R453
C481
R485
R483
R484
R486
C444
R444
R414
C487
R489
D
4
8
2
C411
R401
D443
R407
R455
R466
R465
JW407
R496
R457
C486
R482
C454
C452
R454
R448
R445
R443
C443
C492
D483
CN442
JK441
CN441
PT902
Q
4
8
8
CN904
C
9
2
0
C
9
2
1
C
9
2
2
C
9
2
3
CN903
0.1
100V
0.1
100V
10
50V
10
50V
220
63V
63V
TERMINAL, EARTH
TERMINAL, EARTH
2SC1841
2SC1841
2SC2785
2SC2785
2SC2785
2SC2785
2SA1175
2SC2785
2SC2785
1k
1k
1k
22k
47k
47k
1
1/4W
FR
RELAY U
10EDB40-TB3
0
.0
1
1
6
V
0
.0
1
1
6
V
M
T
Z
J
-T
7
2
-2
7
D
1k
1/4W
2.2k
1/4W
1/4W
JW
JW
J
W
JW
JW
SP RELAY
12V
4.7k
1/4W
1/4W
33k
1/4W
22k
1/4W
4.7k
1/4W
1/4W
1000
25V
22
35V
22
35V
10 1/2W
10 1/2W
0.1
1 1/4W
100
50V
50V
10
50V
12k
1k
2SA1932
0
.1
0
.1
0
.1
3P
3P
10EDB40-TB3
10EDB40-TB3
10EDB40-TB3
10EDB40-TB3
1
S
S
1
3
3
T
-7
7
2P
3P
10P
0.01
16V
1
k
1
S
S
1
3
3
T
-7
7
1
S
S
1
3
3
T
-7
7
100
100V
100k
TERMINAL,
EARTH
2SC1841
33k
1/4W
22k
1/4W
33k
1/4W
22
35V
0.1
0.1
1
S
S
1
3
3
T
-7
7
10
1/2W
100
10V
10V
100k
1/4W
1/4W
100k
1/4W
1/4W
1000p
4.7
50V
50V
4.7k
1/4W
1/4W
1
S
S
1
3
3
T
-7
7
0.01
16V
100k
1SS133T-77
100
1/2W
1k
56k
1/4W
47k
1/4W
JW
100 1/4W FR
22k
2.2
50V
50V
10k
1/4W
0.1
0.1
10
1/2W
1k
1000p
0.01
1SS133T-77
3P
13P
*
0
.0
1
0
.0
1
0
.0
1
0
.0
1
*
JW
JW912
JW
3300
63V
3300
63V
0.22
5W
0.22
5W
STK403-130
STK403-130
TH-10K
D10XB20
2.2k
1/4W
1/4W
2.2k
1/4W
1/4W
100p
50V
JW
JW
T8.0AL/250V
T8.0AL/250V
T3.15AL/250V
T3.15AL/250V
JW
JW
JW
AC CORD U
100p
50V
4.7k
1/4W
47k
1/4W
22
1/4W
56k
1/4W
33k
1/4W
4.7k
1/4W
47k
1/4W
33k
1/4W
2
S
C
2
7
8
5
T
P
-F
E
K
CN904, CN903
2P : MX, AR
4P : E2, E51
2P : MX, AR
4P : E2, E51
*
240V
220V
4P
2P
JW907
JW
AR
E2, E51
E2, E51, MX
120
220
240
MX, AR
E2, E51
S901
VOLTAGE
SELECTOR
120V
220V
230 - 240V
↓
↑
JW904
JW
JW903
JW
MX
EXCEPT AR
AR
JW905
JW
AR
Page
Page
40
40
HCD-RG221
• IC BLOCK DIAGRAMS
IC701, 712 BA6956AN (DRIVER BOARD)
1
2
3
4
5
6
7
8
9
CONTROL LOGIC
TSD
VREF
OUT2
OUT1
RNF
VM
VCC
FIN
GND
RIN
IC251 BA5947FM (BD81A BOARD)
15
16
17
18
19
20
21
22
23
24
25
26
27
36
28
29
30
31
32
33
34
35
1
2
3
4
5
6
7
8
9
10
11
12
13
14
LEVEL
SHIFT
SHIFT
F
R
R
F
R
F
F
19k
6.5k
50k 50k
100k
50k
PIN3
10k
Vref
50k 50k
PIN26
(ch1, 2)
POW
VCC
(ch3, 4)
SW
Pre
Vcc
INTER
FACE
INTER
FACE
INTER
FACE
R
F
50k 50k
POW
VCC
MUTE
Vref
POW
VCC
R
F
10k
CH1PUTF
CH1OUTR
CH2OUTF
CH2OUTR
POWVCC
CNF4
GND
C-M
C-P
VG
CH2RIN
CH2FIN
CH1RIN
CH1FIN
SW
OPIN+
OPIN-
NC
CH4OUTR
CH4OUTF
CH3OUTF
CH3OUTR
POWVCC
MUTE
GND
GND
PREGND
CT
CH3RIN
CH3FIN
CH4IN
CH4CAPA
OUTVREF
DPOUT
TREVCC
NC
D
D
D
D
D
D
D
D
IC301 TC94A34FG-002 (BD81A BOARD)
33
34
35
36
37
38
39
40
41
42
1
8
43
61
62
63
64
60
59
56
52
50
47
46
45
44
48
49
25
26
27
28
29
30
31
32
17
18
19
20
21
22
23
24
9
10
11
2
3
4
5
6
7
58
57
55
53
51
12
13
14
15
16
54
RAS
CAS
OE
WE
PIO7
PIO6
PIO5
PIO4
Bus
Switch
BUCK
CCE
AD12
AD11
Gener
al
In/Output P
or
t
Address Calc.
2sets
Y-
P
o
inter
register
C-P
ointer
register
X-P
ointer
register
VDDM
SRMSTB
VDDT
AD10
AD9
ERAM
2k w
ord
CRAM
4k w
ord
CR
OM
4k w
ord
YRAM
4k w
ord
XRAM
4k w
ord
SRAM/
DRAM I/F
SRAM I/F
1Mbit
SRAM
X-Bus
Y-
Bus
AD7
AD6
AD5
AD8
VC0
Timing
Generator
PRAM
Instr
uction
Decoder
Prog
ram
Control
MCU
. I/F
register
XO • X1 • X2
Y0 •
Y1 •
Y2
MX
MY
MZ
MA
C
A0
A1
AX
A
Y
ALU
A2
A3
DIT
round & limit
round & limit
A
udio I/F
LRCKIA
BCKIA
SDI0
LRCKO
BCKO
SDO0
VSS
VDDT
MIACK
MICK
MIDIO
MILP
MICS
STANBY
RESET
VDDP
AD4
AD3
AD2
AD1
AD0
VSS
VDD
CK
O
VDDX
XO
TEST
VCOI
VSSX
XI
MIMD
VSSP
PIO3
PIO2
PIO1
PIO0
VSS
CKI
VDD
TXO
SFSY
SBSY
D
ATA
POM
Sub code
I/F
CDP Cont
I/F
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