268XA
Service Manual
8-10
Figure 8-2. Controller/System Power PCA (cont)
WP5
220U
C321
O
O
P
S
L305
CTX5-1A
MBRS140
CR310
C317
0.1U
VSW
VC
GND
VIN
BOOST
SHDN
SYNC
SENSE
U303
LT1507-3.3
MMBD914
CR309
0.0033U
C318
220U
C316
220U
C314
220U
C319
+5V
220U
C311
-30V
0.02
R302
IRFR5305
Q303
BAV74
CR315
0.1U
C307
L301
50UH
CR316
MBRD360
S
Q304
SUD25N06-45L
C310
0.047U
SGND
RGND
PGND
C
T
N-GATE
I
TH
SHUTDN2
SHUTDN1
P-DRIVE
P-GATE
VIN
VCC
CAP
VCC
SENSE+
SENSE-
LTC1149CS-5
U301
820P
C309
CR301
MBRD360
R303
1K
0.0033U
C302
470U
C306
470U
C305
470U
C304
O
O
P
S
L306
CTX5-4A
22000U
C303
CR302
MBRD360
0.033U
C308
6.8V
5%
5235
VR301
R308
47K
1.5U
C324
-5V
1.5U
C312
OUT
IN
-5V
7211U50
U307
GND
47U
C323
+5V
S
Q301
SUD25N06-45L
CR303
BAT54
470
R304
+5V
47U
C313
S
Q302
SUD25N06-45L
CR306
BAT54
470
R305
+5V
P6
C301
0.047U
10.0K
R301
WP301
WP302
7SZ14
U306
WP303
7SZ14
U305
VCC
0.01U
C16
0.01U
C4
0.01U
C134
0.01U
C71
0.01U
C67
0.01U
C54
0.01U
C47
0.01U
C85
0.01U
C80
0.01U
C72
0.01U
C66
0.01U
C53
VCC
10U
C46
10U
C133
10U
C62
0.01U
C26
10U
C63
0.01U
C27
0.01U
C24
0.01U
C22
0.01U
C25
0.01U
C23
0.01U
C20
0.01U
C14
0.01U
C21
0.01U
C17
0.01U
C12
0.01U
C10
0.01U
C15
0.01U
C13
0.01U
C8
0.01U
C6
0.01U
C11
0.01U
C9
L3
5%
1.2UH
VCC
L2
5%
1.2UH
VCC
10U
C56
L48
70 OHM
0.01U
C5
0.01U
C7
0.01U
C110
0.01U
C107
0.01U
C111
0.01U
C108
0.01U
C104
0.01U
C101
0.01U
C105
0.01U
C102
0.01U
C98
0.01U
C95
0.01U
C99
0.01U
C96
0.01U
C92
0.01U
C88
0.01U
C93
0.01U
C89
0.01U
C83
0.01U
C78
0.01U
C84
0.01U
C79
0.01U
C74
0.01U
C69
0.01U
C75
0.01U
C70
0.01U
C64
10U
C49
0.01U
C65
10U
C52
L49
70 OHM
VCC
L50
70 OHM
3.3U
C154
MMBD7000
CR304
MMBD7000
CR305
MMBD7000
CR312
WP3
180P
C157
WP11
WP12
WP13
180P
C158
180P
C159
180P
C160
P9
0.01U
C30
0.01U
C31
0.01U
C32
0.01U
C33
0.01U
C34
0.01U
C35
0.01U
C90
0.01U
C161
0.01U
C162
0.01U
C163
0.01U
C164
CR308
50WQ04FN
CR311
50WQ04FN
CR313
50WQ04FN
CR307
50WQ04FN
Z70
1K
O
O
O
O
S1
S2
P1
P2
JR DISP XFMR
T2
0.01U
C117
P10
10U
C120
0.01U
C165
+24V
L59
70 OHM
0.1U
C169
15U
C168
CR6
MBR0530
R40
665K
R41
36.5K
0.1U
C167
10U
C166
R39
1K
+5V
L28
20%
10UH
GND
LT1930
SHDN
VIN
SW
FB
U30
F301
OUT
IN
OUT
IN
P6
8
3
D
6
7
5
4
1
2
A
B
C
D
A
B
C
AC INPUT FROM XFMR SECONDARY
DC INPUT FROM REAR PANEL (9-42V)
LOW-ESR
FAN CONNECTOR
5V TO 24V, 100MA FAN SUPPLY
POWER SWITCH
POWER SWITCH
AND DECOUPLING
POWER SUPPLIES
LOCAL SUPPLY FOR U6, 1 CAP PER 2 POWER PINS
DECOUPLING FOR U2 - U5, U10 - U12, 1 CAP PER POWER PIN
DISPLAY FILAMENT 5.3VAC
5A
1.25A
DECOUPLING FOR SDRAM U18.19,21,22
+45V MAX
+8V MIN
DECOUPLING FOR U17
2680A-1004
(5 of 5)
4
2
3
1
2
1
3
M1
5
1
3
4
2
3
1
4
3
2
5
6
4
7
9
2
1
10
4
3
1
2
1
4
5
3
2
4
5
3
2
1
2
1
3
2
3
4
2
1
2
5
3
15
10
11
9
8
14
12
1
4
13
7
6
16
M301
M303
M302
3
2
8
5
4
7
6
1
3
4
2
1
M304
I694
I465
FIL1
+
+
+
+
FIL2
5%
50V
TANT
+
50V
TANT
+
5%
I457
+
I455
+
10V
+
+
+
10V
+
+
+
VCC_U6
VCC_U6
+
+
5%
+
I444
100V
AC1
AC2
+
VCC_U17
VCC_SDRAM
FIL_CLK*
FIL_CLK
+
16V
16V
+
+
35V
+
Summary of Contents for 2680A
Page 6: ......
Page 12: ...268XA Service Manual vi ...
Page 18: ...268XA Service Manual 1 2 ...
Page 48: ...268XA Service Manual 1 32 ...
Page 96: ...268XA Service Manual 2 48 ...
Page 98: ...268XA Service Manual 3 2 ...
Page 106: ...268XA Service Manual 3 10 ...
Page 132: ...268XA Service Manual 5 2 ...
Page 194: ...268XA Service Manual 6 48 ...
Page 196: ...268XA Service Manual 7 2 ...
Page 204: ...268XA Service Manual 7 10 268X FINAL ASSEMBLY alg105f eps Figure 7 1 268XA Final Assembly ...
Page 207: ...Replaceable Parts Parts Lists 7 7 13 2680A DIO alg100f eps Figure 7 3 DIO Module ...
Page 209: ...Replaceable Parts Parts Lists 7 7 15 2680A FAI alg102f eps Figure 7 4 FAI Module ...
Page 211: ...Replaceable Parts Parts Lists 7 7 17 2680A PAI alg103f eps Figure 7 5 PAI Module ...
Page 214: ...268XA Service Manual 8 2 ...
Page 215: ...8 3 8 Schematic Diagrams Figure 8 1 Backplane PCA 2680A 4001 ...
Page 216: ...268XA Service Manual 8 4 Figure 8 1 Backplane PCA cont 2680A 1001 ...
Page 217: ...8 5 8 Schematic Diagrams Figure 8 2 Controller System Power PCA 2680A 4004 ...
Page 223: ...8 11 8 Schematic Diagrams Figure 8 3 Digital I O PCA 2680A 4006 ...
Page 224: ...268XA Service Manual 8 12 Figure 8 3 Digital I O PCA cont 2680A 1006 1 of 3 ...
Page 225: ...8 13 8 Schematic Diagrams Figure 8 3 Digital I O PCA cont 2680A 1006 2 of 3 ...
Page 226: ...268XA Service Manual 8 14 Figure 8 3 Digital I O PCA cont 2680A 1006 3 of 3 ...
Page 227: ...8 15 8 Schematic Diagrams Figure 8 4 Backplane Extender PCA 2680A 4009 ...
Page 228: ...268XA Service Manual 8 16 Figure 8 4 Backplane Extender PCA cont 2680A 1009 ...
Page 229: ...8 17 8 Schematic Diagrams Figure 8 5 Extender PCA 2680A 4010 ...
Page 230: ...268XA Service Manual 8 18 Figure 8 5 Extender PCA cont 2680A 3010 ...
Page 231: ...8 19 8 Schematic Diagrams Figure 8 6 A D Supply Assembly 2680A 4031 ...
Page 232: ...268XA Service Manual 8 20 Figure 8 6 A D Supply Assembly cont 2680 1031 ...
Page 233: ...8 21 8 Schematic Diagrams Figure 8 7 PCMCIA PCA 2680A 4041 ...
Page 234: ...268XA Service Manual 8 22 Figure 8 7 PCMCIA PCA cont 2686 1041 ...
Page 235: ...8 23 8 Schematic Diagrams Figure 8 8 Output PCA 2680A 4062 ...
Page 236: ...268XA Service Manual 8 24 Figure 8 8 Output PCA cont 2680A 1062 ...
Page 237: ...8 25 8 Schematic Diagrams Figure 8 9 A D PFE PCA 2640A 4003 ...
Page 238: ...268XA Service Manual 8 26 Figure 8 9 A D PFE PCA cont 1 of 6 ...
Page 239: ...8 27 8 Schematic Diagrams Figure 8 9 A D PFE PCA cont 2 of 6 ...
Page 240: ...268XA Service Manual 8 28 Figure 8 9 A D PFE PCA cont 2640A 1003 3 of 6 ...
Page 241: ...8 29 8 Schematic Diagrams Figure 8 9 A D PFE PCA cont 2640A 1003 4 of 6 ...
Page 242: ...268XA Service Manual 8 30 Figure 8 9 A D PFE PCA cont 2640A 1003 5 of 6 ...
Page 243: ...8 31 8 Schematic Diagrams Figure 8 9 A D PFE PCA cont 2640A 1003 6 of 6 ...
Page 244: ...268XA Service Manual 8 32 Figure 8 10 A D FFE PCA 2645A 4003 ...
Page 245: ...8 33 8 Schematic Diagrams Figure 8 10 A D FFE PCA cont 2645A 1003 1 of 6 ...
Page 246: ...268XA Service Manual 8 34 Figure 8 10 A D FFE PCA cont 2645A 1003 2 of 6 ...
Page 247: ...8 35 8 Schematic Diagrams Figure 8 10 A D FFE PCA cont 2645A 1003 3 of 6 ...
Page 248: ...268XA Service Manual 8 36 Figure 8 10 A D FFE PCA cont 2645A 1003 4 of 6 ...
Page 249: ...8 37 8 Schematic Diagrams Figure 8 10 A D FFE PCA cont 2645A 1003 5 of 6 ...
Page 250: ...268XA Service Manual 8 38 Figure 8 10 A D FFE PCA cont 700p29_topress zip 2645A 1003 6 of 6 ...
Page 251: ...8 39 8 Schematic Diagrams Figure 8 11 Analog Input Connector PCA 2620A 4004A ...
Page 252: ...268XA Service Manual 8 40 2620A 1004 Figure 8 11 Analog Input Connector PCA cont ...
Page 253: ...8 41 8 Schematic Diagrams Figure 8 12 Display PCA 1 of 1 ...
Page 254: ...268XA Service Manual 8 42 Figure 8 12 Display PCA cont 1 of 1 ...