Epson TM-L90 series - Page 143

Rev.B Appendix F-15
TM-L90 Service Manual
Confidential
Logic Power Block (Drawing Number 3)
I/F Circuit Block (Drawing Number 4)
VIO
VBUS
nIFRST
nRESET nRESET
QMZ1
43 5
1 6 2
CZ6
PN
ZDZ1
1 2
FZ1
1 2
CZ8
12
CZ4
12
UZ2
1
2
3
4 5
6
7
8
NC
RESET
CONT
VIN VOUT
NC
GND
CD
CZ5
12
RZ2
12
CZ14
12
RZ1
12
RZ4
12
DZ1
1 2
CZ12
12
CZ3
12
CZ10
PN
RZ6
1 2
CZ1
1 2
UZ1
1
2
3
45
6
7
8
GND
SS_INH
OSC
OUTVCC
BOOT
COMP
FB
CZ7
12
RZ3
12
CZ9
12
CZ15
12
CYZ1
1
3 2 CZ13
12
CZ2
PN
CZ11
12
LZ1
1 2
RZ5
12
V24S5,8,20
nIFRST 20
nRESET 1,20
VBUS 1,2,20,22,23
VIO 1,2,4,5,6,8,20,23,24
BLOCK(13)
RTS
TXD
RXD
N25_RES
CLKIN/DTR
CTS
DET
CLK_REQ
UIBSEL
DSR_RES
VIO
VIO
VIO
CY1
12
DY2
AC
RY15
12
RY10
12
RY20
12
RY22
1 2
RY5
1 2
RY6
1 2
RY7
1 2
RY2
1 2
RY8
1 2
CY500
12
RY3
1 2
DMY1
4
23 1
CY501
12
RY9
1 2
RY12
1 2
UY2B
53
7 84
UY2A
2 6
1
8 4
RY11
1 2
RY23
12
QMY1
43 5
1 6 2
CY502
12
RY4
1 2
RY19
12
RY18
1 2
RY21
1 2
RY14
12
RY13
12
RY17
1 2
RY16
12
CLKIN/DTR 1
IF_CLKIN/DTR20
nCLK_REQ 1
RTS 1
TXD 1
UIBSEL 1
HOST_RTS20
IF_RTS20
nIF_CLKREQ20
IF_SD20
CTS 1
DET 1
N25_RES 1
RXD 1
HCTS 1
IF_PWRON 8
IF_N25RES20
IF_DET20
IF_DSRRES20
IF_RD20
IF_CTS20
IF_HCTS20
DSR_RES 1