IBM 5280 Maintenance Information Manual page 128

331
DISKETTE DRIVE CONTROL CARD
31SD
4 1
u::::m
PTXCP
BA
001
o
00
00
00
00
00
00
00
00 I/O CP
00
D
TPA010 0 TPB01
TPCQ40 0 0 0 TPC01
o TPD01
TPE030 0 0 TPE01
TPF02 0 0 TPF01
TPG02 0
TPH050
o TPG01
6
O i~:
TPC
TPD.
TPE
TPF
TPG
TPH
00
00
laaaa al
TH
00
00
00
00
o 18
oTPHlD
o
TP24V
rolB
~A
2 1
lEDCP
THOI
TH02
TH03
TH04
TH05
TH06
oTPlED
SCP
4 1
~
Diff Read B
No Pin
Diff Read A
Not Assigned
·Disable Stepper Motor
+18V
2 Locations
I I
TPAOI +5 Vdc
TPGOI
TPBOI
·5 Vdc
TPG02
TPCOI
+Access 1
TPHOI
TPC02 31S0 PTX TPH02
TPC03 Write Data
TPH03
TPC04 Ground
TPH04
TPDOI +Inner Tracks
TPH05
TPEOI +Access 0
TPAMPI
TPE02 +Head Engage
TPAMP2
TPE03 +Index
TPHLD
TPFOI Ground
TP24V
TPF02 +Write/Erase Enabled
TPLED
TPH04 0 0 0
o
TPH01
o
TPAMP1
o
TPAMP2
DD
7
HCP 1
laoo 0
o.
+File Data
+Erase Gate
MC·3
MC-2
Me·l
MC-O
+Write Gate
Preamp TPI
Preamp TP2
-Head Load
+24 Vdc
3150 LED Voltage
331
6 1
10000 01
SMCP