Maintenance—
DM
5010
Table
7-3
(cont)
Typical
Symptoms
Circuit Section—Verification
Dead, unchanging, or flickering display, or
no
response
to
pushbuttons.
CPU Board, Diagram 9
3. FRONT PANEL—Check that U1605-1 (RW3) is a logic 1. With the DIODE
TEST
button held in, check the same
point for
a 0.6 ms logic 0 pulse at
'5 ms
intervals.
Error
code 311
Isolation
Board, Diagram 4
4. ISOLATED SUPPLIES
—Using an isolated ground reference, check the fol
lowing supply
voltages:
P1701-7A
+35.1
Vdc, ±11%
P1701-13B
+36.9 Vdc,
±11%
P1701-13A
-36.9 Vdc, ±11%
P1701-14A
—17.6Vdc, ±11%
P1701-14B
+17.6 Vdc,
±11%
P1701-15B
-17.6
Vdc,
±11%
P1701-15A
-27 Vdc, ±2%
No
response to REAR
INPUT button,
wrong
reading, hunts for range,
displayed
measurement
drifts.
Isolation Board, Diagram 5
ADC Board, Diagram 2
RMS Board,
Diagram 3
5. FUNCTION & RANGE REGISTERS—Repeatedly press the REAR INPUT
button and check
that the relay clicks with each button press.
Error
code 311, wrong reading, hunts for
range.
Isolation
Board, Diagrams 4 and 5
ADC Board, Diagram 1
6. A/D CONVERTER—Connect U1
120-3 on the
ADC Board to analog ground.
Display
reads —zero
in all DCV ranges.
One or more DCV readings is out of
specification or
311 error code.
De
Voltage
Measuring
Circuits,
Diagram
1
7.
Apply 0 V de and 95% of the full scale de voltage at the DM 5010 inputs for
each DCV range. All readings are within specification.
One or more ACV or ACV + DCV readings
is
out of
specification.
RMS Board,
Diagram 3
8. RMS CONVERTER—For both ACV and ACV + DCV, apply a 200 Hz, 5% and
95%
of
full scale input at the DM 5010 inputs, for the 200
mV
through 200 V
ranges. Apply
a 200
Hz, 14% and 95% of full scale input for the 700 V range. All
readings
are within specification.
One
or more
OHMS readings is out of
specification.
RMS Board,
Diagram 3
9. OHMS CONVERTER—Apply 0 Ω and 95% of the full scale input resistance,
at the DM 5010 inputs, for
each OHMS range. All readings
are within
specification.
7-10
ADD
JAN
1982
Summary of Contents for DM 5010
Page 14: ...DM 5010 2994 00 DM 5010 Programmable Digital Multimeter xii ADD JUL 1986...
Page 27: ...Operating Instructions DM 5010 2994 03 Fig 2 3 DM 5010 front panel controls and connectors 2 3...
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Page 251: ...Section 8 DM 5010 OPTIONS No options are available 8 1...
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Page 272: ...DM 5010 2994 37 Fig 10 2 Location of DM 5010 adjustments and test points...
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