Epson TM-L90 series - Main Circuit Board (3 of 3) (Drawing Number 20

Rev.B Appendix F-14
TM-L90 Service Manual
Confidential
Main Circuit Board (3 of 3) (Drawing Number 20)
I/F BOARD
Sub
Board
Power
SW
A/C
motor
PF
motor
HEAD
NE
Label
photo
Switch
Board
RE
OUTPUT
CLK
S/L
BLOCK(1)
BLOCK(11)
TM-T90 Common & Mecha Driver Root
Sheet No.20
POWER
Power SW Control
V24IN V24OUT
nOFF_TRG
OFF_CTRL
DSW1-1+
DSW1
PSW+
PSW-
IF_PWRON
PSW
MECHA SENSOR
Mecha sensor
ARRE
RNE
AC_RST
RNE_S
AC_RST_S
PTLED_COM1 PWR_LED1
RRE_S
CVS CVS_S
PTLED_COM2 PWR_LED2
LRE_SALRE
PF Driver
PF Driver
PF_VR
PF_PH1
PF_I10
PF_PH2
PF_I20
PF_A+
PF_A-
PF_B+
PF_B-
I/F CIRCUIT
Common UIB_IF
HOST_RTS
IF_CTS
IF_DET
IF_RTS
IF_CLKIN/DTR
nIF_CLKREQ
IF_SD
IF_RD
IF_N25RES
IF_DSRRES
CTS
RTS
CLKIN/DTR
nCLK_REQ
TXD
RXD
DSR_RES
N25_RES
DET
UIBSEL
IF_HCTS HCTS
IF_PWRON
A/C DRIVER
A/C_Driver
AC+
AC-
nACOVC
ACM+
ACM-
Logic Power
Logic Power
nIFRST
V24S VIO
VBUS
nRESET
DRAWER KICK DRIVER_1
DK_Driver
DK_S1
GPS24
DK_P
DK_2
DK_1
DKDS1
DKD_EN
DKD1
DKD2
HEAD DRIVER
HEAD Driver
TH_VH2
TH_VH1
TH_TM1
TH_D1
TH_D2
TH_SCLK
TH_D4
TH_D3
TH_LAT
TH_STB
TH_LATCH
TH_STB_A
TH_DI2
TH_DI1
TH_CLK
TH_DI4
TH_THERM
TH_DI3
DK_1
RXD
CTS
DKD2
N25_RES
CLKIN/DTR
DK_2
DK_S
nCLK_REQ
DK_S
DKD1
DKDS1
DSR_RES
nERRDIS
RTS
DK_P
TXD
DK_P
DET
DSW1-1+
nOFF_TRG
OFF_CTRL
SWV24
nIFRST
nRESET
UIBSEL
nTIMO1
nTIMO2
nWDTOUT
V24IN
DSW1
HCTS
IF_PWRON
IF_PWRON
nIFRSTEXT_RES
VPS24
DK_2
DK_1
PSW+
PSW-
nSPDV24
nSPDV24
nACOVC
nOFF_TRG
nTIMI1
nNMI
nTIMI2
AC_1
AC_2
nACOVC
PF_B-
PF_A+
PF_A-
VH2
VH1
VH2
VH1
VH1
PWR_LED1
SILAT
PWR_LED1
DSW1
ERROR_LED
CVS_S
SIDAT
POWER_LED
PAPER_LED
SICLK
LRE_S
DSW1-1+
RRE_S
PTLED2
AC_RST
AC_RST_S
PWR_LED2
CVS_S
RRE_S
PTLED1
PWR_LED1
ARRE
LRE_S
RNE
CVS
RNE_S
ALRE
DADAT
DACLKPF_VR
nERRDIS
VPS24
SV24
RERR_LED
MFS MFS
GPS24
ROUT_LED
RPF_PHA2
RPF_PHB1
PF_VR
RPF_PHA1
RPF_PHB2
PSW
DI12
HRCLK
HRA2
TH_STB
STH
VH2
TH_TM1
VH1
VH2
BI_DI12
TH_LACTH
HRDATA
HRA0
HRA3
VH1
HRLD
HRA1
TH_CLK
DI34
BI_DI34
PWR_LED
GPS24
GPS24
ACM-
GND
ACM+
AC_RST_S
PF_B+
DSW1-1+ 8
CLKIN/DTR 1,4
DSW1-1+8
RTS 1,4
nCLK_REQ 1,4
TXD 1,4
DKD1 1,5
DKD2 1,5
nRESET 1,3
nERRDIS 5
OFF_CTRL1,8
nTIMO11
SWV241
nTIMO21
nIFRST 3
UIBSEL 1,4
nWDTOUT 1
IF_PWRON4,8
EXT_RES1
nOFF_TRG 1,8
nACOVC 6
nSPDV24 1
DADAT 1
DACLK 1
ROUT_LED1
AC_11,6
MFS1
PWR_LED1
SICLK1
RERR_LED1
AC_21,6
SILAT1
HRA11,22
HRA31,22
HRLD1,22
HRA01,22
HRA21,22
HRCLK1,22
HRDATA1,22
PTLED11,23
PTLED21,23
RXD 1 ,4
CTS 1,4
DET 1,4
DKDS1 1,5
SV241
N25_RES 1,4
DSR_RES 1,4
nSPDV241
HCTS 1,4
DSW1 8nOFF_TRG1,8
nRESET 1, 3
nERRDIS 5
IF_PWRON 4,8
nIFRST 3
nTIMI11
nNMI1
nTIMI21
SIDAT1
nACOVC6
STH1,22
ARRE1,23
CVS1,23
RNE1,23
AC_RST1,23
ALRE1,23
DSW18
PWR_LED123
LRE_S23
CVS_S23
CVS_S 23
RRE_S 23
LRE_S 23
AC_RST_S 23
PWR_LED123
PWR_LED1 23
RRE_S23
AC_RST_S23
PF_VR24
RPF_PHB21,24
RPF_PHB11,24
PF_VR24
RPF_PHA21,24
RPF_PHA11,24
PSW 1, 8
V24 VBUS
VIO
VIO
VIO
VIO
VIO
VIO
VIO
VIO
VIO
V24IN V24S
VBUS V24S
VIO
CN4
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
CN6
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
DK_1
DK_S
PG
PG
+24V
+24V
PG
HOST_RTS
CTS
DET
RTS
CLKIN/DTR
CLKREQ
SG
+5V
DK_2
DK_G
DK_P
PG
+24V
+24V
PG
SG
SD
RD
HOST_CTS
N25_RESET
DSR_RESET
NRESET
SG
CN10
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
QM1
43
5
1 6
2
VIO
1
LED1
AC
VBUS
1
R97 1 2
L1
12
DM2
1
2
34
5
6
C6
12
F1
1 2
C1
12
R17
1 2
R19
1 2
L503
1 2
C9
12
V24S
1
C53
12
D2
A C
R14
12
C7
12
R18
12
R6
1 2
R15
12
CN9
1
2
3
4
1
2
3
4
CN13
1
2
3
1
2
3
C50
PN
R16
12
L12
12
Q2
2
3
1
C49
12
L3
21
43
R5
12
R20
12
R9
1 2
R500
1 2
R4
12
SW1
QM3
4
3
5
2
1
GND
1
R3
12
CN11
1
2
1
2
R13
12
C2
12
R100
12
CN12
1
2
3
4
1
2
3
4
R7
12
VPS24
1
Q500
2
3
1
C3PN
R8
12
Q1
1
23
D1
1 2
CH13
12
R1
1 2
R10
1 2
CN7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
L502
12
DM500
4
23
1
R501
1 2
+
-
U2A
3
2
1
84
R99 1 2
D500
1 2
R11
12
C8
12
CH14
PN
C4
12
CN8
1
2
3
4
5
1
2
3
4
5
U1
1
2
3
4 5
6
7
8
A01
A02
A03
NC GND
SDA
SCL
VCC
R98 1 2
Page F-16
Page F-17
Page F-18
Page F-16
Page F-17
Page F-20
Page F-19
Page F-20
Note; Non-contiguous numbers are given to the drawing numbers.