Hickok 6000A - Circuit Description and Troubleshooting; Overall Functional Description TI

SECTION 22
CIRCUIT DESCRIPTION AND TROUBLESHOOTING
3-1 OVERALL FUNCTIONAL DESCRIPTION
The Hickok Model 60004 is a versatile test instrument containing two
full-wave rectifiers. A schematic wiring diagram (figure 3-1) is pro-
vided for individual component location. The controls and connectors that
appear on the top panel are named on the schematic for easy correlation.
The power requirements are provided by a single power transformer
operating on either 115 volts or 230 volts.
3-2 TROUBLESHOOTING
The troubles and remedies indicated in Table 3-1 will aid in trouble -
shooting.
TROUBLE REMEDY
Check R4, POWER LINE ADJUST for
opens or shorts.
Check FUSE lamp fora burned out con-
dition. If burned out, replace with
Мо. 81 lamp for 115V operation, or
No. 63 lamp for 230 volt operation.
Check line cord.
Meter does not respond when
TEST button is depressed
Check BIAS FUSE lamp for a burned
out condition. If burned out replace
only with a No. 49 panel lamp.
SHORTS lamps do not light
when tester is turned ON
Check the FUSE lamp.
Check neon lamps DS1 to DS5 for
shorts or opens.
Check tubes V1 (83) and V2 (5Y3)
for shorts or opens. Check trans-
former Т1 for burned odor, shorts
or opens.
Check line cord.
Tester is turned ON, meter does
not respond, BIAS FUSE and
FUSE lamp do not light and
POWER LINE ADJUST can not
make meter respond.
Table 3-1. Troubleshooting Chart
MIR