IBM 5110 Series Maintenance Analysis Procedures page 43

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TAPE READ MAP
PAGE 19 OF 45
189
-While looking into the front of the tape drive
push the spindle (see MIM 203) to the left. Do
not push on the rubber part of the spindle.
While the spindle is pushed to the left, the tape
motor should rotate the spindle.
Does the spindle rotate?
V N
2
o
190
- Open the covers and see if the motor is
running. It is difficult to view the motor
turning. You might have to view the jackshaft
pulleys and the drive belt to tell if the motor is
turning.
Is the motor running?
V N
191
-Power down.
-Unplug theAC line cord for the 5110.
- Disconnect the power supply ac power
connector P1 at the ac power box (see
MIM 207,273).
- Disconnect the tape motor ac power
connector P3 at the ac power box (see
MIM 207,273).
-Connect the tape motor ac power
connector (P3) to the power supply ac
power connector (J 1).
- Plug in the AC line cord.
- Power up. Wait 25 seconds.
Does the tape motor run now?
V N
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STU V
D D D
T U V
MAP 0300-19
192
-Power down.
- Unplug the AC line cord.
- Replug ac power connectors in their
proper locations (tape motor connector at
J3 and ac power supply connector at J1
(see MIM 207,273).
Bad tape motor assembly (see MIM 203).
Bad tape motor start capacitor (see MIM
203). Check the tape motor cable and
connector.
193
- Power down.
-Unplug the AC line cord.
- Replug ac power connectors in their proper
locations (tape motor connector at J3 and ac
power supply connector at J 1 (see M I M
207,273).
Test/replace ac wiring (see MIM 273).
194
Is the jackshaft rotating (see MIM 203)?
V N
195
Inspect the jackshaft for frozen bearings.
Bad belt (see M I M 203).
Check/adjust the motor pulley (see MIM 227).
Bad jackshaft housing assembly (see M I M
203).
196
There may be foreign material in the select
magnet gaps (see MIM 203).
Check/adjust the jackshaft housing (see MIM
220).
Check/ adjust the magnet gaps (see MIM 221).
Bad jackshaft housing assembly (see M I M 203).
Bad spindle-select arm assembly (see MIM 203).
01JAN79
EC 836600 PEC 835541
MAP 0300-19
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