Chapter 7 Parts Replacement
AC-4000H Service Manual No. 085-7323-08
7-8
Detaching the thermal head
1.
Pull out the thermal (harness) connector.
2.
Remove the two screws.
Thermal head
Thermal head specifications
Model
LH3124WH (Double-density thermal head) made by TDK
Total dot number
448 dots
Dot pitch
0.135mm
Head resistance
R=528 to 672 (automatic setting)
Power consumption
0.66W/dot
Applied voltage
24V
Connector
Screws (M3 x 6)
Thermal head
Adjusting thermal head print conditions
•
Loosen the two screws (M3 x 6) slightly, and move the thermal head back and forth.
•
Adjust to match the top point of the print roller with the thermal head applied point.
Moves back and forth.
Screws (M3 x 6)
Print roller
Thermal head