HP 3562A Service Manual page 484

S E RV I C E
6 . If the signatu res i n table A2-3 are incorrect, check that A 2 U1 00 p i n s 1 2 , 1 3, 21 , 22,
23, 24, and 25 are a TTL logic h i g h .
7. Put A2 J1 i n position 1/2". I t takes about 1 0s for each of the s ignatu res i n tab le A2-4
to stabil ize.
Monitor ROM Test
J u m pers in test (T) position: A2J4, A2J5, A2J 6, A2j 7, A2J 9 , A2J 1 0, A2J 1 8
J u m pers i n position "2": A2J 1 , A2J 1 1 , A2J 1 4
J umpers i n normal (N) position: A2J 8, A2J1 7, A2J1 2, A2J 1 3
J u mpers i n either normal o r test position: A2J1 5, A2J 1 6
S ignature Analyzer Setup: Refer to table A2-2
+ 5 V S ignature
Component
U1 05
8-34
Table A2-4 CPU Signature Analysis Test #2
=
6PCP
Pin Signature
1 1 9 U U U
1 2 FH2H
1 3 H H H H
1 5 P488
1 6 F7CH
1 7 H1 HA
1 8 C F33
1 9
F1 08
Component Pin
U205 1 1
1 2
1 3
1 5
1 6
1 7
1 8
1 9
MO D E L 3562A
Signature
3 5 H 3
6000
2C1 8
6300
P9F7
278F
A936
1 3C9