Service manual

96 Replaces page 35
Table 3-10 Secondary Microprocessor Signature Analysis
Description:
These signatures check secondary microprocessor U301 and latches U302 and U330. The signatures are
valid for U301 firmware revisions ''Rev A.01.01" and "Rev A.01.02". Use the test setup described in "Test Setup for S.A."
Signatures:
Front Panel Display = ''INPUT DWN"
U301 U30Q U330
+ 5V U301-7,4,9,21,39 = 1CAU U302-20 = 1CAU U330-20 = 1CAU
Common U301-1 U302-10 U330-10
SPCLR
U301-6 = 1CAU+5V U302-1 = 1CAU+5V U330-1 = 1CAU+5V
1 MHz U301-40
SD(7) U301-30 = 674O U302-14 = 674O U330-4 = 674O
SD(6) U301-31 = FPOU U302-17 = FPOU U330-17 = FPOU
SD(5) U301-32 = O343 U302-13 = O343 U330-13 = O343
SD(4) U301-33 = 7792 U302-8 = 7792 U330-7 = 7792
SD(3) U301-34 = 93AU U302-18 = 93AU U330-3 = 93AU
SD(2) U301-35 = 89AA U302-3 = 89AA U330-18 = 89AA
SD(1) U301-36 = 2OOF U302-4 = 2OOF U330-14 = 2OOF
SD(0) U301-37 = 1P45 U302-7 = lP45 U330-8 = lP45
U301-8 = lCAU+5V U302-2 = F1HA U330-19 = AFPF
U301-10 = 1CAU pulsing U302-19 = FHU1 U330-2 = 1CAU pulsing
U301-11 = lCAU+5V U302-16 = lUF1 U330-16 = H495
U301-12 = OOOO pulsing U302-15 = OOOU U330-5 = IUP5
U301-13 = CH72 U302-11 = P27H U330-11 = 1CAU pulsing
U301-14 = 6471 U302-12 = 83OO U330-12 = P6C3
U301-15 = 21A2 U302-9 = 23AP U330-6 = 9AFP
U301-16 = COH6 U302-6 = 8933 U330-9 = P3U5
U301-17 = 2UU2 U302-5 = O21U U330-15 = C3C3
U301-18 = 7A6C
U301-19 = C975
U301-20 = 6F2F
U301-22 = unstable
U301-23 = OOOO pulsing
U301-24 = H65P
U301-25 = OOOO pulsing
U301-26 = 6OUC
U301-27 = 3964
U301-28 = F96O
U301-29 = 5O93
U318-5.6= OOOO
U318-4 = 1CAU +5V