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TPA09
PTXCP
I~oo ~
I
~:f:'~O
D
o
0
1
o
o
0
o
0
0
TPE01
o
0
0
TPF01
o
0
0
TPG01
o
0
0
TPH01
+5V
o
0
0
TPLD2
o
0
o
0
0
TPLD1
o
0
o
0
o
0
o
0
~ ~
I/O
CP
o
0
o
0
1B
B A
©
6
1
100
0
01
LEDCP
SCP
4
100 01
TH01
Diff Read B
TH02
No Pin
TH03
Diff Read A
TH04
-High Gain
TPAOB
TPA07
0
0
TPB06 0
0
TPD020
TPC031
0
'-5V
TH05
-Disable Stepper Motor
TH06
+14V
TH07
Access Clamp Voltage
TH08
Oscillator
o
TPA06
0
0
0
I
PB01
o
TPCOl
o
TPDOl
+24V
TH
IlillelJliiJCI
~I
B
D
TPA01
MC-3
TPA02
MC-1
TPA03
MC-2
TPA04
MC·O
TPA05
Ground
TPA06
+Erase" Gate
TPA07
Ground
TPA08
-Head Load
TPA09
+5V dc
TPA10
51TD PTX
TPB01
+24V dc
TPB02
Ground
TPA
TPB
TPC
TPD
TPE
TPF
TPG
TPH
TPB03
+Select Head 1
TPB04
+Write Gate
TPB05
+Head Engage
TPB06
Write Data
Figure F-41 (Part 2 of 2). Diskette Drive Locations and Card Test Points
F-62
Ground"
0
o
0
o
TPA01
SMCP
6
1
0000
0
1
TPAMP2 0
0
TPAMP1
D
o
TPCTO
o
TPCTl
14
HCP
1 0 0 0 0 0 0 0 0 0 0 0 0
0
I
TPB07
31SD PTX
TPC01
+Access 0
TPC02
+Inner Tracks
TPC03
-5V dc
TPD01
+Access 1
TPD02
+Switch Filter
TPEOl
+Index
TPFOl
+Diskette Sp.nse
TPGOl
+Write Erase Enabled
TPHOl
+File Data
TPLD2
51 TO LED Voltage
TPLDl
51TD LED Voltage
TPAMP2
Preamp TP2
TPAMPl
Preamp TPl
TPCTO
Center Tap Head 0
TPCT1
Center Tap Head 1
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