Sony UP-D2550S Service Manual page 71

IC201
AK6420AF-E2
EPP_BUSY
1
2
EPP_CS
3
SCK0
4
C201
0.1
C217
47
16V
C216
0.1
R271 10k
R272 10k
R273 10k
SCK0
RXD0
TXD0
CL182
R274
WR RD 10k
TP223 TP224
CL178
1,2,3 NCPUWR
CL177
1,2,3 NCPURD
NPRNT_DREQ
DMABSY
NSPC_INT
C215 0.1
3 P_COOLING
R250
R306
CN202 14P 4.7k
,NM
CL148
14 GND
CL147
13 NKEYEN_0
L209
CL146
KEYDATA_0
12
L210
CL145
11 KEYDATA_1
L211
10 KEYDATA_2
9 KEYDATA_3
8 KEYDATA_4
KEYDATA_5
7
ALARM_LED
6
5 PRINT_LED
+5V
4
IR_DETECT
3
RESERVED
2
1 GND
UP-D2550S (UC,CE)
A B
CL173
CLK
TP221
IC202
L212
SN74HCU04ANSR
1 14
2 13
R228
470
3 12
EPP_RESET
4 11
8 X201
7 5 10
RXD0
6 6 9
R204 1M
TXD0
5 7 8
C205
22p C208
0.1
C206
22p
C209
47
L213 16V
CL218
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61
1 RES A4 60
2 XTAL A5 59
3 EXTAL A6 58
4 57
MD1 A7
5 MD0 VSS 56
6 NMI A8 55
7 STBY A9 54
8 53
VCC A10
CL184
9 SCK0 A11 52
CL183 IC204
10 RXD0 A12 51
HD6413378F10
11 TXD0
12 50
VSS A13
A14 49
13 WAIT A15 48
14 Ø VCC 47
15 46
AS P47
16 WR P46 45
17 RD P45 44
18 43
IRQ0 P44
19 42
IRQ1 P43
20 IRQ2 P42 41
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
CL170
R310
,NM
R268
4.7k
R309
0
EPP_BUSY
C
IF-762 (4/4) IF-762 (4/4)
R269
R244
47k 47k
R203 R205
220 220
R270
R245
100
100
R316
1k
RES
R248
TP222
1k
PAGE ADDR-
S201 S202
D201
1S2837-T1 1 2
1 2 1 2
IC203
S-80842ALUP-EA6
5 5
-T2 3
R249
100k
C204
3 4 3 4
0.1
2 1
3
C214
C210
0.1
0.1
16V
25V
B
F
CL175
C235
0.1
IC208
SN74HC08ANSR
C223
0.1
1 14
2 13
3 12
CPUA14
4 11
CPUA15
5 10
6 9
CL230 CPUA4
7 8
CL229 CPUA5
CL228 CPUA6
CL227 CPUA7
CL226 CPUA8
R206
CL225 CPUA9 IC210
10k
MX27C1001-D25SYV
CL224 CPUA10
R207
,NM
CL223 CPUA11
VPP
1 VCC 32
CL222 CPUA12
2 A16 PGM 31
CPUA15
3 A15 NC 30
CL221 CPUA13 CPUA12
4 A12 A14 29
CL220 CPUA14 CPUA7
A7
5 A13 28
CL219 CPUA15 CPUA6
6 A6 A8 27
CPUA5
7 A5 A9 26
BZ101
CPUA4
C222 47 16V
8 A4 A11 25
CPUA3
9 A3 OE 24
CL176
ID4 CPUA2
10 A2 A10 23
CL174
ID2 CPUA1
11 A1 CE 22
CL172 CPUA0
ID1
12 A0 D7 21
CL171
CPUD0
13 D0 D6 20
CPUD1
14 D1 D5 19
CPUD2
15 D2 D4 18
GND D3
16 17
CNI210
10-5 10-5
D E
R208 R219 R231 R239
220 330 470 820
R317
6.8k
R312
4.7k
ADDR+ DATA- DATA+ EXEC TEST
S203 S204 S205 S206
S207
1 2 1 2 1 2 1 2
1
5 5 5 5 3 4
3 4 3 4 3 4 3 4 2
IC211
SN74HC138ANSR
16
VCC 15
CPUA11 1
A Y0
CPUA12 2 14
B Y1
CPUA13 3 13 CL235
C Y2
CPUA14 12 CL234
Y3
11
CPUA15 CL233
Y4
4 10 CL232
Y5
5 9 CL231
EN Y6
CPUA13 6 7
Y7
GND
8
C225
0.1
IC212
,NM
CPUD7
1 RST D7 28
CPUA4 CPUD6
2 FL D6 27
CPUA14 CPUA0 CPUD5
3 A0 D5 26
CPUA13 CPUA1 CPUD4
D4
4 A1 25
CPUA8 CPUA2 CPUD3
5 A2 D3 24
CPUA9 CPUA3 CPUD2
6 A3 D2 23
CPUA11
7 22
R308
,NM
8 21
CPUA10 CPUD1
9 D1 20
CPUD0
10 D0 19
CPUD7
11 18
CPUD6
12 CE 17
CPUD5
13 WR GND 16
CPUD4
14 VCC GND 15
CPUD3
C230 CNI212
0.1
C226
GND
0.1
TPE202
TP225 TP226 TP227 TP228 TP229 TP230 TP231
ARLD DMEN PDRQ DMBY REF COL0 COL1
F G
1,2,3
D+5V
1
CLK 1,3
1,2,3
D_GND
2
NRES 2
1,2,3
CPUD
CPUA 1,2,3
1
NCPUCS2
2
NCPCS
3
NSPC_CS 3
NCPUCS0 1
CN204 14P
CL247
GND 1
KEYDATA0 2
KEYDATA1
3
KEYDATA2
4
KEYDATA3 5
KEY_EN1 6
KEY_EN2
7
KEY_EN3
8
L203 CL245
TXD1
SY_PRT_RXD 9
L204 CL244
RXD1
PRT_SY_TXD 10
NRTS L205 CL243
SY_PRT_CTS
11
L206 CL242
NCTS
PRT_SY_RTS
12
L207 CL241
NRESET 13
L208 CL240
GND 14
4
SCSI_ID 3
R298 100
CUP
CUP 1
R299 100
CPUMOD
1
CPUMOD
R300 100
NAREALD
NAREALD 1
R301 100
NDMAEN
NDMAEN 1
NPRNT_DREQ
NPRNT_DREQ 2
DMABSY
DMABSY 1
NSPC_INT
NSPC_INT 3
COLOR0
COLOR0 2
COLOR1
COLOR1 2
CPUREF
1
CPUREF
MRES
1,3
MEMRES
NSTOP
1
NSTOP
5
IF-762(4/4)
B-UPD2550S-IF762-SM
H