Maintenance—485/R485 Service
F.) At TP1958 H.V. Current Sens during sampling period
with short on —2950 supply.
G.) At TP 1926. Inverter Current Sens during sampling period
with all supplies normal.
H.) At TP 1926. Inverter Current Sens during sampling period
with short on +15 supply.
0 V
.5 V/D IV
20 psec/DIV
I.) At TP1926. Inverter Current Sens during normal opera
tion.
JJ
I
.5 V/DIV
20 psec/DIV
► 0 V
J.l At TP1919. Mono Ramp during normal operation.
5 V/DIV
20 psec/DIV
0 V
K.) At collector of Q1900 during normal operation.
50 m V/DIV
20 psec/DIV
L.) At TP +59.4. Ripple on +59.4 supply during normal
operation (AC coupled).
M.) X10 Probe at Anode of CR1660 Normal operation with
intensity off.
Fig. 4-2. Power Supply Waveforms cont.
4-10
REV. APR 1974
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