HP 3438A Operating And Service Manual page 71

READ VERIFICATION A N D STATIC
INTERRUPT TEST.
,
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( A ) DISCONNECT T P l l FROM GND.
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(€41 CONNECT.
D A V TO 0 1 0 1
NRFD TO D l 0 2
NDAC TO D l 0 3
A T N TO D l 0 4
REN TO D l 0 5
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IFC TO D l 0 6
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(C) SWITCH SETTING:
-
NOTE: M A Y BE UNSTABLE.
REPLACE U712 AND/OR U713.
REPLACE U725 AND/OR U722. REPLACE U722 AND/OR U706.
REPLACE U712 AND/OR U718.
REPLACE U712.
REPLACE U713 AND/OR U709.
REPLACE U703, U706 AND/OR R701.
REPLACE U710 AND/OR U709. REPLACE U710 AND/OR U713.
4r
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REPLACE U 7 0 6 U717AND/OR U723
REPLACE U706 AND/OR TROUBLE-
I I
SHOOT STUCK DATA BUS (DO-D).
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HP-IB LOGIC TROUBLESHOOTING
NOTES
Y = Y E S O R O K
N = NO OR BAD
SA
=
SIGNATURE ANALYZER
U704
Pin 3 427F
5 7H3C
7 88P5
9 9182
11 08F4
13 7UFP
15 7A27
17 HF30
IF THE GATE ON THE SIGNA-
TURE ANALYZER FAILS TO
TRIGGER, TROUBLESHOOT
THE DEVICES (THE IC'S) TO
WHICH START, STOP, AND
CLOCK ARE ATTACHED.
SIG. SET
=
SA SIGNATURES
FOR PARTICULAR DEVICE.
REFER TO APRON PAGE.
ADDRESS SWITCHES:
SIGNATURE SETS
(SIGNATURE ANALYZER DISPLAY INDICATION)
U722 U704 U704 U706
Pin 1 UFP2 Pin 2 CP22 Pin 12 02AA Pin 3 781P
2 928F 4 91U6 14 A157 5 2 ~ ~ 5
3 5U7A 6 UHHA 16 1172 7 UFU3
4 6215 8 15UH 9 4223
5 0000 11 7F3A
U722
Pin 1 5314
2 1111
3 A401
4 2P82
5 0000
U704 U704 U704 U722
Pin 3 C4C4 Pin 2 0000 Pin 12 000 Pin 1 UFP2
5 6HAH 4 0000
14 000
2 928F
7 F526 6 0000 16 000 3 5U7A
9 CU49 8 0000 4 6215
11 5313 5 0000
13 3C23
15 H255
17 HF30