Epson TM-H6000 Service Manual

Appendix D-64 Product Overview Rev. A
Confidential
Thermal Head Drive Circuit
Printing is performed by applying voltage to the heating element resistor in the thermal head.
The GA (U30) controls all data transfers to the thermal head, and also controls the energizing
pulse. Firmware gives instructions to the GA, but data transfers and drive pulses are performed
automatically by the GA. Due to the circuit configuration, the six signal lines on the left side (all
controlled by GA) perform data transfers.
Figure D-63
VCC
VCC
VCC
VCC
24VA
TM2
/STB1
/STB2
GND
CLK
GND
VH
/LAT
GND
GND
GND
VH
VH_1
TM1
VH
VDD
VH_1
GND
DI2
VH_1
DI1
TH_STB2
TH_D2
TH_D1
TH_THERM
TH_STB1
TH_SCLK
TH_LAT
R121
U21
C83
12
L8
R128
R127
C80
L10
U20
1
2
3
4 5
6
7
8
R126
R130
L11
R140
C82
12
C59
R132
L7 CN22
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
D38
R135
R143
C72
R131
C67
R134
C84
12
C68
D36
R145
2
R129
L4
C76
C60
C58
R125
C73
R124
R122
R123
C69
C79
L9
C81
L5
C61
C66
R120
L6

Epson TM-H6000 Specifications

General

Brand	Epson
Model	TM-H6000
Category	Printer
Language	English