Service manual

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Table 3-4. Primary Microprocessor Signature Analysis
Description
: These signatures check primary microprocessor U203, ROM U205, and RAM U206. The signatures are valid
for ROM U205 firmware revision "Rev A.01.01". Use the test setup described in "Test Setup for S.A.". Connect the
signature analyzer's CLOCK input to U207-9.
Signatures:
µ
µµ
µP U203
ROM U205 RAM U206
+5V U203-4,7,21 = 1HC4 U205-28 = lHC4 U206-28,14 = lHC4
Common U203-1,9,10 U205-14 U206-1,14,22
4 MHz U203-2,3
1 MHz U203-40 U205-22 U206-26
PLCR
U203-6 = +5V
A(0) U203-13 = A2A8 U205-10 = A2A8 U206-10 = A2A8
A(1) U203-14 = 7379 U205-9 = 7379 U206-9 = 7379
A(2) U203-15 = lCF8 U205-8 = lCF8 U206-8 = 1CF8
A(3) U203-16 = CC35 U205-7 = CC35 U206-7 = CC35
A(4) U203-17 = HP8C U205-6 = HP8C U206-6 = HP8C
A(5) U203-18 = 2HHU U205-5 = 2HHU U206-5 = 2HHU
A(6) U203-19 = 6AO7 U205-4 = 6AO7 U206-4 = 6AO7
A(7) U203-20 = F5CP U205-3 = F5CP U206-3 = F5CP
A(8) U203-29 = A21F U205-25 = A21F U206-25 = A21F
A(9) U203-28 = F103 U205-24 = F103 U206-24 = F103
A(10) U203-27 = 56HC U205-21 = 56HC U206-21 = 56HC
A(11) U203-26 = 45FH U205-23 = 45FH U206-23 = 45FH
A(12) U203-25 = 66C4 U205-2 = 66C4 U206-2 = 66C4
A(13) U203-24 = HP62 U205-26 = HP62
A(14) U203-23 = C861 U205-27 = C861
A(15) U203-22 = 71CU U205-1 = 71CU
D(0) U203-37 = HOAA U205-11 = HOAA U206-11 = HOAA
D(1) U203-36 = FA61 U205-12 = FA61 U206-12 = FA61
D(2) U203-35 = A477 U205-13 = A477 U206-13 = A477
D(3) U203-34 = HUUO U205-15 = HUUO U206-15 = HUUO
D(4) U203-33 = CP8H U205-16 = CP8H U206-16 = CP8H
D(5) U203-32 = 3H8H U205-17 = 3H8H U206-17 = 3H8H
D(6) U203-31 = CPPH U205-18 = CPPH U206-18 = CPPH
D(7) U203-30 = F446 U205-19 = F446 U206-19 = F446
SER_IN U203-11 = 2244
SER_OUT U203-12 = unstable
R/W U203-38 = HA6H U206-27 = HA6H
CE U205-20 = HOC7
CE1 U206-22 = lHC4 U206-20 = AA38
U207-3 = UA8P U215-4 = UA8P U217-3 = 71CU
U207-4 = P73A U215-5 = FH03 U217-4 = C861
U207-8 = E clock U215-6 = AA38 U217-5 = HP62
U207-9 = E clock U217-6 = HOC7
U207-12 = FHO3 U217-8 = UA8P
U207-13 = HOC7 U217-9 = 66C4
U217-10 = 45FH
U217-11 = 56HC