[4] Is this
digit zero
(no subroutines)
No
Yes
Read first failing phase prologue. Determine if subroutines
were used and identify their location and function. Locate
first failing test and determine test function. Determine
if doloops were used and identify their location and
NCLK SYNCHRONIZATION UNIT
(XX = phase number)
Subroutines in PUDGSUCR (4A416)
PR numbers — phase number
DIAGNOSTIC DOCUMENTATION
4A420 — 1
4A419 — 2
4A418 — 3
4A417 — 4
4A421 — 5
4A465 — 6
4A466 — 7
4A452 — 8
function to identify and replace any suspect packs other
function. Use knowledge of first failing test
PIDENT is PUDGSUXX
than those previously replaced
CLEAR DIAGNOSTIC FAILURE BY ANALYZING RAW DATA
AND
SUMMARY
TABLE A
[1] See CAUTION 1. Obtain diagnostic
CAUTION 1
Always remove
NCSU from service
and disable all
oscillators (using
switch) before
working on any
network clock
problem
ENABLE/DISABLE
and read prologue [TABLE A]
[3] Locate sixth digit in fifth
data
data word following mismatch
Subroutines in PUDGNCHI (4A504)
except IPUB (PH 99) is PR4A697.
Subroutines in PUDGSCGR (4A517)
(XX = phase number)
(XX = phase number)
failing test raw data
PR number=4A504 + phase number
PR number=4A517 + phase number
PIDENT is PUDGNCXX
PIDENT is PUDGSCXX
data printout, locate first
NETWORK CLOCK
SYSTEM CLOCK
PIDENT for first failing phase
[2] See Figure 1, Page 2. On raw
TAP
PAGE 1 of 6
234-151-013
105
Issue 8
DEC 1995
