Functional Structure Of Main Pcb - SATO 9001226(A) Service Manual

Section 6: Checks and Adjustment Procedures

6.1 FUNCTIONAL STRUCTURE OF MAIN PCB

There are ten potentiometers (VRs) and a DIP switch (DSW) on the Main PCB for functional adjustment.
These are explained as below.
DSW (viewing
from top)
CONT PCB
1) Default DSW (Dip switch) setting
DSW 1
Model Head density
TG308 OFF
TG312 OFF
(Switching firmware based on the head density and destination)
DSW
Model
TG308 or TG312
TG308
TG312
1
* Print operation will not be performed properly even if setting head density to automatic recognition (DSW1,
DSW2 = OFF) and replacing the head portion only. It is necessary to change the driving mechanism of
printer unit based on the head density too.
Page 6-2
VR4
2 3
Not used
Destination
OFF ON
OFF ON
1 2
Head density
Destination
OFF OFF
ON OFF
OFF ON
VR3 DSW VR5
VR2 VR6 VR10
VR9 VR1
VR7
4 5
Not used Not used
OFF OFF
OFF OFF
3
Remarks
ON
Head density is automatically recognized (*
ON
ON
VR8
CHK
6 7
Not used Not used
OFF OFF
OFF OFF
TG3 Series Service Manual
8
OFF
OFF
1
)