Setting The Thermal Head - Casio QG-100 Operation, Service Manual & Parts List

6. SETTING THE THERMAL HEAD

SETTING THE THERMAL HEAD RANK
Solder the pads (RNK1 ~ RNK4) on PCB Z568-2 according to the head rank number indicated on
the tip of FPC from the thermal head. Refer to the next table.
HEAD RANK No.
0
1
2
3
4
5
6
7
8
9
* HEAD RANK No. = RNK1 × 1 + RNK2 × 2 + RNK3 × 4 + RNK4 × 8
(RNK1 ~ 4: SHORT = 1, OPEN = 0)
For example, if head rank number on FPC is 6, solder both RNK2 pad & RNK3 pad on PCB-Z568-2.
RNK1 RNK2
OPEN OPEN
SHORT OPEN
OPEN SHORT
SHORT SHORT
OPEN OPEN
SHORT OPEN
OPEN SHORT
SHORT SHORT
OPEN OPEN
SHORT OPEN
SHORT: Solder pad OPEN: Don't solder pad
— 12 —
RNK3 RNK4
OPEN OPEN
OPEN OPEN
OPEN OPEN
OPEN OPEN
SHORT OPEN
SHORT OPEN
SHORT OPEN
SHORT OPEN
OPEN SHORT
OPEN SHORT