Detection Systems DS7092 Specifikace stáhnout pdf (Strana 163)

e. Voltage Supply Limits Sensing Cir-

cuit Test.

(1) Perform the alignment procedure

for the voltage supply limits

sensing circuit (para 43 c).

(2) If the circuit does not adjust pro-

perly. Prooceed to f below.

(9) If the circuit does adjust properly,

trouble Isolation In assembly A7800

is complete.

f. Voltage Supply Limits Sensing Cir-

cuit Isolation.

(1) Adjust the 721A for an output volt-

age of +12 volts dc and apply it to

the test probe.

P7801-K

15.7

P7801-L

Q7801 emitter

9.5

CR7801 and R7806

9.1

P7801-M

1.95

(2) Measure the dc voltage listed in

the chart below with an ME-26B/U

to isolate the faulty part.

Circuit junction

+dc voltage to

ground (Volts)

(3)

(4)

(5)

Remove the test signal and set the

TS-1777/VRM-1 ON-OFF switch

S7901 to OFF.

Replace the faulty part.

Repeat e above

1 2 ... 158 159 160 161 162 163 164 165 166 167 168 ... 180 181

Žádné komentáře

Detection Systems DS7092 Specifikace Strana 163