2-106 Service Manual
936.61 Main drive motor
assembly failure
No lock detected at
normal motor start.
Motor = type 1
The main drive motor assembly
may be faulty or has failed.
1. Check all connections on
the system card assembly.
2. Check all connections on
the main drive motor
assembly.
3. Replace the main drive
motor assembly. Go to
“Output cover assembly
removal” on page 4-54.
4. Replace the system card
assembly if problem
remains. Go to “System
card assembly removal”
on page 4-76.
936.90 Main drive motor
assembly failure
Stall detected during
speed control.
Motor = type 0
The main drive motor assembly
may be faulty or has failed.
1. Check all connections on
the system card assembly.
2. Check all connections on
the main drive motor
assembly.
3. Replace the main drive
motor assembly. Go to
“Output cover assembly
removal” on page 4-54.
4. Replace the system card
assembly if problem
remains. Go to “System
card assembly removal”
on page 4-76.
936.91 Main drive motor
assembly failure
Stall detected during
speed control.
Motor = type 1
The main drive motor assembly
may be faulty or has failed.
1. Check all connections on
the system card assembly.
2. Check all connections on
the main drive motor
assembly.
3. Replace the main drive
motor assembly. Go to
“Output cover assembly
removal” on page 4-54.
4. Replace the system card
assembly if problem
remains. Go to “System
card assembly removal”
on page 4-76.
937.40 Main drive motor
assembly failure
Over speed detected
during speed control.
Motor = type 0
The main drive motor assembly
may be faulty or has failed.
1. Check all connections on
the system card assembly.
2. Check all connections on
the main drive motor
assembly.
3. Replace the main drive
motor assembly. Go to
“Output cover assembly
removal” on page 4-54.
4. Replace the system card
assembly if problem
remains. Go to “System
card assembly removal”
on page 4-76.
Error
code or
message
Error contents Description/Action Possible repair actions
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