HP 9845B/C CE Service Manual

2-8 Theory of Operation
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45
37
39
15
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25-31
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RDATA
LOWCURR
WDATA
WRITDRV
HEADLOAD
WRPROT
HEADSEL
DRV0-3
MOVE IN
DISCHNG
STEP
READY
INDEX
TWO-SIDE
TRACK
0
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READ
46 LOGIC
2
38 WRITE
LOGIC
40
POR r
r HEAD LOAD
16
44
14
26-32
34
CONTROL
12
LOGIC
36
22
20
10
42
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READ/WRITE
HEADS
t
DOOR LOCK SOLENOID
ACTIVITY
LED
WRITE- PROTECT SENSOR
!JACKETSLOT}
HEAD- LOAD SOLENOID
TRACK
00 SENSOR {CARRIAGE TAB}
DOOR-CLOSED SWITCH ~
\
OA
OS
STEPPI N G MOTOR
OC
00
L INDEX SENSOR
{INDEX HOLE}
INDEX LED
Figure 2-2. Drive Block Diagram
WRITE PROTECT LED ~
TRACK 00 LED ~
I

HP 9845B/C CE Specifications

General

Brand	HP
Model	9845B/C CE
Category	Storage
Language	English