Canon C2050, Service Handbook

Page: 24 / 292

CHAPTER 2 STANDARDS AND ADJUSTMENTS
2-8R
3.2 When Replacing the Reader Controller PCB
1) Remove the reader unit front lower cover.
2) Check to see if all items of the service label found on the reader unit front lower cover
have values indicated; otherwise, start service mode, and record the missing values.
3) Remove the faulty reader controller PCB.
4) Mount the new reader controller PCB.
5) Detach the DIMM ROM from the faulty reader controller PCB, and attach it to the new
reader controller PCB.
F02-302-01
When using a new DIMM ROM, be sure to upgrade the DIMM ROMs of
the reader controller PCB, the DC controller PCB, and system controller
PCB to make sure that their versions will match.
A1
B8 A8
B1
2
1
42
41 40
39
80
79
A33 A34 B33 B34
A1 A2 B1 B2
A33 A34 B33 B34
A1 A2 B1 B2
A1
B15 A15
B1
A1
B12 A12
B1
A1
B11 A11
B1
J1605
J1602
J1601
J1605 J1608 J1609
J1608
J1611
J1614
J1617
J1702 J1701
J1603
6 1
1 9
17
13
1
51
SW1601
1 72
SW1602
VR1
1 8
1 2
LED1605
LED1604
LED1603
LED1602
LED1601
ON
ON
DIMM ROM