Replacing Main (Cont) Pcb And Calendar Ic - SATO 9001226(A) Service Manual

Section 7: Replacement Procedures

7.11 REPLACING MAIN (CONT) PCB AND CALENDAR IC

The main circuit board is the primary brain-center for all printer activities. Circuit boards generally have long
lives due to the lack of moving parts. So if a circuit board becomes defective, it is usually due to a negative
external condition. If it is determined that the circuit board has become defective, search the printer over for
possible visual factors that may have led to the damage.
Before proceeding, switch off the printer and remove left housing cover to gain access to the internal
1.
(electrical) hardware. Refer to Section 7.1 Removal of Housing cover for details.
Make sure the installed interface board is removed and all the cables are disconnected.
2.
Disconnect seven wiring harnesses (2)-(8) from the Main (CONT) PCB (9).
3.
Unscrew six screws (1) securing the Main (CONT) PCB (9) to the Main (CONT) PCB chassis .
4.
The defective Main (CONT) PCB (9) can now be removed and replaced.
5.
Main (CONT) PCB
For Interface board
connection
8
SID
4 10
Page 7-18
1
OPTION SEN
HDS
KB
POWER
MOTOR
3 2
9
2 Connect to Power Unit and
Print Head assembly
3 Connect to Stepper Motor
4 Connect to Keypad board
5 Connect to Operator Panel
Board
7
6 Connect to Print Head assem-
6
bly
7 Connect to I-Mark/ Gap Sensor
5
assembly
8 Connect to Optional device
(e.g. cutter, etc.)
1
TG3 Series Service Manual