Read Sony KLV-21SG2 Service Manual online
KLV-21SG2 (AEP) 3-6
CN4000
VHS
VVS
UPEN
VCLK
VY0-7
VUY0-7
MSAU R
MSAU L
MS BS2
MS RESET
FLAG
PXD MS
PIC MUTE NS
TXD MS
AC DET
BRD STATUS
SIRCS
MENU STATUS
E
IC4201
6
3
4
5
15
16
CPU
IC4000
57
58
59
55
69-71
73-76,78
60
62-68
48
52
137
136
8
8
53
88
108
95
132
130
131
93
101
135
134
104
159
155
156
161
157
162
156
163
41-44
13
10
9
164
38
40
34
37
30-32
29
27
25
24
22
IC4003
1
2
3
4
5
16
14
13
X4200
54MHz
AUDIO DAC
Q4005 Q4004
Q4002,Q4003
6
5
IC4001
NVM
7
SDA
SCL
IC4100
CPU
206
257
235
10
11
31
32
53
54
75
76
137-140
223
225
116
146
147
153
156
161,163,164
170
172
177,178
179
AA13
Y13
24,20
23,19
18,22
8,21
39,41,43,45
34,36
30,32,42,44
35,38,40
31,33
29
28
10
48
25
2,6,17
1,4,7,16
3,5,9
26
11
12
72
73
50-52
27-30
4,6,7
122
124
232
185
188
194,195
201
203
246
45,89
90,107
97
106,113
248
226
247
210,252
253,272
FLASH ROM
FA(A10,A11)
2
FA(B9,B10)
2
FA(C9,C10)
2
FA(D9,D10)
2
FD(L1-L4)
4
FD(Y1-Y3)
BUSCTL(DIR)
M2,M4
2
N1-N4
4
P1,P3,P4
3
R2-R4
3
T1-T3
2
3
M2,M3
R2-R4
T1-T3
2
2
2
3
4
2
4
2
2
FA(A10,A11)
FA(B9,B10)
FA(C9,C10)
FA(D9,D10)
FD(L1-L4)
M2,M3
N1-N4
P1,P3,P4
R2,R3
T1
BUSCTL
D6
D7
C6-C8
B5-B8
A4,A6,A7
J2
J4
Y10
3
4
3
16,20
21,23
15,19
11,14
18
8
3-5
7
168
172
170
150
46
1
2
173
176
2
4
3
4
3
2
4
119,126
127,133
149,150
176,152
157-159
167,168
142-144
112,118
221,222
243,266
166,173
174,175
181-183
189,191
192,198
200
134
109,94
95
102
SDRAM
IC4200
16
19
20
26
29
35
4,5
8,10
11,13
44,45
48,50,51,53
37
38
15
39
IC4202
SDRAM
16-19
20-26
29-35
37,38
15
39
4
14
17
3
2
SDRAM1
SDRAM2
SDRAM3
217,220
238-242
260-265
283,285
286
17
88
101
2
10
8
6
4
CN4100
RESET
ECV
ED
ECLK
ICE
256
234
254
211
IC4203
MUTE SW
MUTE
VY0-VY7
VUV0-VUV7
VDCDISABLE
8
3
IC4002
WDT
Q4001
RESET
3.3V
D4000
Q4000
Y13,AA13
CLK
128
9
14
51
166
145
CLK54M
CLK_SEL
MS_SEL
PD
BICK
SDAT
LRCK
CKS
CLK12M
CLK66M-RE
CLK20M
WE
45
54
48
8
6
4
2
MS SCLK
MS INS
MS SDIO
MS BS
TO B-1 BOARD
CN3001
31-38
23-30
48
47
46
45
41
43
2
3
11
4
5
6
8
9
10
7
26
R4
169
V2,V3
U1-U4
W1-W3
FD(AA2)
BUS CTL(BE0-4)
BUS CTL(BS,CS,RDY)
AA4
IRQ0,1
DREQ 0-3
250
270
274
269
268
230
227
251
RXD MS
PIC MUTE NS
TXD MS
ACDET
BRD STATUS
SIRCS
MENU STATUS
4,5
8,10
11,13
44,45
48,50,51,53
R OUT
L OUT
SDRAM1
SDRAM2
SDRAM4
SDRAM3
SDRAM7
SDRAM5
SDRAM6
3
5
7
9
CN4101
D4302
LIMITTER
10
9
8
7
6
5
4
3
2
1
GND
VCC
SCLK
#
INS
#
DIO
NC
BS
GND
CN4302
LIMITTER
D4303
3.3V
Q4303
MS DRIVER
D4301
Q4301,Q4302
LED SW
(MEMORY STICK)
MSX
CN4301
(PROCESSOR)
MS
MEMORY
STICK
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