40496501TH Draft Version
B-3
Figure B-2-1 Block Diagram
"
#
*
*
+
+
2
3
:
;
<
OCS
P1
P2
P0
P3
TD
RD
IF WR
LS245
2764
ROM
8 KB
RD
TD
RAM
8 KB
Driver
+5 VD
+12V
-12V
+5 V
+9 V
–9 V
+5V
0V
±
9 V power
supply circuit
Serial data
control line
Bus line
Control line
"
#
$
*
*
+
+
,
,
2
2
3
3
4
4
:
;
<
ADR latch
Receiver
DB0 to DB9
ADR/data bus
ADR bus
80C51
RST
CN1
Содержание PACEMARK 4410
Страница 1: ...PACEMARK 4410 PRINTER SERVICE HANDBOOK...
Страница 52: ...40496501TH Draft Version 52 Figure 3 1 3 2 Parts Layout...
Страница 95: ...40496501TH Draft Version 95...
Страница 151: ...40496501TH Draft Version 151 No Yes End Replace PHA Board Recovered No Yes End Replace PMA Board...
Страница 168: ...XXXXXXXXTH Draft Version 8 5 Fig 8 5 45 38 38 40 42 39 44 44 122 41...
Страница 169: ...XXXXXXXXTH Draft Version 8 6 142 141 11 119 Fig 8 6...
Страница 170: ...XXXXXXXXTH Draft Version 8 7 Fig 8 7 105 102 61 33 104 100 101...
Страница 171: ...XXXXXXXXTH Draft Version 8 8 Fig 8 8 55...