o 0
F H
1 1
9 9
TAPE READ
MAP
PAGE
20
OF
45
180
Is
the
jackshaft
rotating
(refer
to
202)7
Y N
181
Inspect the jackshaft
for
frozen bearings.
Defective belt (refer
to
202).
Service check / adjust the motor pulley
(refer
to
226).
Defective jackshaft housing assembly (refer
to
202).
182
There might
be
foreign material
in
the select
magnet gaps (refer
to
202).
Service check/adjust the jackshaft housing
(refer
to
223).
Service check/adjust the magnet gaps (refer
to
222).
Defective jackshaft housing assembly (refer
to
202).
Defective spindle-select arm assembly (refer
to
202).
183
\
-Insert the diagnostic cartridge into the tape
drive.
***********
* CAUTION *
***********
TAPE MAY
RUN
OFF
THE
REEL
IF
THE
JUMPER IS
LEFT
ON
TOO
LONG.
-Momentarily attach a jumper between tape
control card pin 812 (-forward magnet drive) and
tape control card pin U08 (gnd) (refer
to
227).
Did
the
tape
move
counterclockwise
(forward)?
Y N
2 2
o 0
o D
J K
o 0
J K
2 2
o 0
184
MAP 0300-20
-Calibrate the
CE
meter (refer
to
270).
-Measure
+12
vdc between tape control card
pin 813
(+
12 vdc) and tape control card pin
U08 (gnd).
Is
the
voltage
in
tolerance
(+11.0
vdc
to
+13.2 vdc)?
Y N
185
Go
to
Page 37,
Step
409,
Entry
Point
C.
186
-If
there is a cartridge
in
the tape drive,
remove it.
-Remove tape control card (refer
to
202).
-Measure the resistance between tape control
card pin 812 and
813.
Is
the
resistance 25
to
40
ohms?
Y N
187
Defective select magnet (forward) (refer
to
202).
Check/ replace the tape internal cable (refer
to
202).
188
There might
be
foreign material
in
the select
magnet gaps (refer
to
202).
Service check/adjust the jackshaft housing
(refer
to
223).
Service check/adjust the magnet gaps (refer
to 222).
Defective spindle-select arm assembly (refer
to 202).
189
Defective tape control card (refer to 202).
28SEP76
PN
1608386
EC
829670
PEC
828851
MAP 0300-20
(\
I J
"'-_./
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