TM-268 819 Page 15
Belt Driven Generator
210 193-B
See Section 8-3 for
waveforms A,B
Test Equipment Needed:
Check Resistance at TE1
C to D,
C to E,
C to F,
E to F,
D to F
All readings should be 1
ohm. Check with lead 42 lift-
ed. Replace generator if
windings are shorted to case
or open.
Waveform A
Pin 1
.
Voltage readings taken with PLG4/RC4 connected.
Resistance readings taken with PLG4/RC4 disconnected.
V9
V8
V7
1 ohm
26 ohms
Measure Output Voltages V1
Thru V6 At Basket Receptacle
Voltage Readings
a)
Tolerance −
±
10% unless
specified
b)
Condition − 70
°
F (21
°
C); cold
machine (no warm-up); no load
c)
Power rpm (3600 at 60 Hz, 3000 at
50 Hz) unless specified
d)
Reference − single arrow:
reference to circuit common
(lead 42); double arrow:
reference to points indicated
e)
Wiring Diagram − see Section 10
V1 Thru V6 Taken At Basket Receptacle
V1
X to Y − 240 volts AC
±
10%
V2
X to Z − 240 volts AC
±
10%
V3
Y to Z − 240 volts AC
±
10%
V4
X to G − 120 volts AC
±
10%
V5
Y to G − 120 volts AC
±
10%
V6
Z to G − 208 volts AC
±
10%
V7
Rotor:
20 volts DC at no load
±
20%
70 volts DC at full load
±
10%
V8
Exciter:
138 volts AC at no load
±
10%
155 volts AC at full load
±
10%
V9
Voltage Feedback:
240 volts AC
±
10%
V10
Shutdown Signal:
0 volts DC during normal operation*
V11
PWM Signal: 0 to +15 volts DC
1.5 volts DC normal no load
4.3 volts DC at full load
V12
Generator Enable:
Battery voltage when generator is
enabled (on)
0 volts DC when generator is not en-
abled (off)
V13
Battery Voltage
*
If 12 volts DC is present, check rotor
and if rotor checks ok, replace con-
trol board PC1.
