Philips PM2519 - Page 62

48
4.2.7. Ohm part test
SET THE
INSTRUMENT IN
POSITION &
CONNECT AN AMMETER
TO THE VQmA
AND 0 SOCKET
PIN13 PIN7 PIN1
PNGA PNGB PNGC
ISELECT RANGE 10002 l=-1mA
10k l=-100UA
100k 1=-10uA
1000k ts-1A
10M 1=-100nA
NO CURRENT IN
ALL RANGES ?
HIGH OHM RANGES CHECK
TOO LOW ? ADC PART
YES
CHECK
V1551, V1582,
V1553 AND V1554
SHORT-CIRCUIT
THE VQmA
AND 0 SOCKET
ORRECT CLOCK ON
PIN6 AND PINS OF
A1500 {SIGNAL 2} ?
RANGING
CORRECT ?
ST4426
840629
NOTE; Measurement zero is the low socket.