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Ser FUNCTION ro AC. Apply Iull,range input at 100 H2 on each range. Monitor convener output at white wire. Should be

+1 V 1 0 . 0 0 2 V f o r f u l l - ßnge Input on each range,

High lmpedane Assy. montto. pin 18 ol

asAC Converterout-	"-*"rti,"r"
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ange input .
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Check	conriection'

wire) b۟en 46 a

Troubleshoot A6 reed re.

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Select 1 V range and apply input ol 1 V at 100H2 .

Monilor iignal at white

wire connected to lower

end of A6Kl with s@pe . Should be the sme as in- put signal at top end of A 6 K 1

Apply Iull-range inpul al 10OHz on @ch range

n i t o r A 6 T P 2

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Troubleshoot	46Kl and	Troubl6h@t
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driver circuil.	See Note 4.	Circuit.
		SeeNote 4.

NOTES:

1. DC vollmeter circuits, including logic, must be oFraling correctly betore this procedureis attempted.

2.An ac €librator, an oscillos@F, and a dc voltmeter are required for these cnecKs.

3.The time shown on waveforms is @rrect for instruments designed fd 60 Hz line operation. For 50 Hz instruments,incrEse time shown by 20%.

4.Afler repairing the AC Converter. check the owrload protedion circuits in the following mnner:

a. Set 34904 FUNCTION to AC, RANGE ro 1 V, SAMPLE RATE ro FAST, b. Apply inpur of'10V at 100 Hz.

c. Moniroi A6TP1 r

d . lf Fw{sm ;s A 6 R t 4 , t 5 .

e. M6ue rclEg! i

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