HP 3438A - Page 71

READ VERIFICATION AND STATIC
INTERRUPT TEST.
,
I
(A) DISCONNECT TPll FROM GND.
I
(€41 CONNECT.
DAV
TO 010 1
NRFD TO Dl0 2
NDAC TO
Dl0 3
ATN TO
Dl04
REN TO Dl0 5
I
IFC TO Dl06
I
(C) SWITCH SETTING: -
NOTE: MAY 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
I REPLACE U706 U717AND/OR U723
REPLACE U706 AND/OR TROUBLE-
I
I SHOOT STUCK DATA BUS (DO-D). I
HP-IB LOGIC TROUBLESHOOTING
NOTES
Y=YESOROK
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