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Contents (continued)
Power Supply 'Removaliccc
cai avec ded
ibis een losin
sic
6-6
Drive Removal
A
A
ee
a LR
We
A 6-7
Chapter 7
Page
Adjustments
7-1
TntrodtictiOn 285,232
eens
eain
II
E
7-1
Preparation for Adjustments .......... 0. ccc ccc cee cece eee e rro
rr
rare
nora
7-1.
AUS
NES shes
A
A
Oa eka
POA BE
eee
EE
EE
eR 7-1
Phase Lock Loop Adjustment occse raconet
ena
e crono
7-1
Read Pulse Width and Write Pulse Width Adjustments. ...............cc
cee ceeecuv eens eeeseeseessussuues 7-3
Chapter 8
Page
Troubleshooting and Diagnostics
8-1
HP 9153/54A with S/N Prefix 2515 and Lower
Repair: Philosophy
A
A
iaa
Sei
8-1
Preparation for Troubleshooting .......5... cece cece cece ipnr sainan
nor aE
a
rar
8-1
Power Supply Assembly orris
sere ea ccc cccccceccccccccevcececesucesesensectecesseesectesvcevavereeneaces 8-1
SOLES
is
kee
nad diestie Sac celta tain Wels
A
Cane Sao
peat duane
ne ae ae aes 8-2
Tests Performed During Power-On.............ccccec
cece erect e ence eee e eee arrancar
ren
8-2
Fault Indications During Power-On .................. A
AA
Wwe a Seo ated
sue Dees 8-3
Manual Execution of Selectable Selftests...........
0.000 ccc cccsc cee ces sas cnccaceuetucceuseuseuveevesnces 8-3
Fault LED Indications During Manual Execution of Selftests ...........
ccc cc cee ees eececcececcvcescvcecs 8-4
Individual Selftests Available...
0.00... cc cece cece cence cece eee c eee eeeeeececusecucncntetceseeeteseseeas 8-5
HP 9153/54A with S/N Prefix 2702A and Higher and All HP 9153/54B
Repair Philosophy
ti
A
Racha
deat be Se saan
eal ag ooo
aed bles ak tea Sis 8-7
Preparation for Troubleshooting 20.0.0... 0... ccc cece eee cee e eee e eee euseuseeceussuceecceueceueteceveaneenes 8-7
Power Supply Assembly oeer sche is scene
Sed Sea Vanes etn
a
ds
8-7
DEE
aided
dyes
a
bad cca teint Gnat
A
rds nn
o
eee 8-9
Tests Performed During Power-On............c
ccc ce eee c ene raro cnn
rca
rre
rra
8-9
LED Indications During Power-On............cccccceee
eee ceeceeesceeueseeeseseseeuesccseceuceeeeaneencs 8-10
Winchester DISC Drivésics
daenda
Soe ee ee
a
a
o
aai 8-10
Flexible: Disc: Drive ia
8-10
Execution of Service-Self tests en
8-11
Fault LED Indications During Execution of Service Selftests.............
0. ccc cee ccecccecceccecceecuncs 8-12
Service Selftests Available eies
0. ccc cece cece uc ceeeceeseueee neces seeceeesenaeceuneceeuseceuccenecsanes 8-12
Troubleshooting Procedures ala
8-13
General Inf ormationy sie 225 A
a
bets ee 8-13
Troubleshooting Flowchart...........
00. ccc cece eens ee snseesensecane ao
rios 8-14
Procedures PO through P4..............
ccc cee ee eeees it
eet ara Sect
nad ates wees
bo
de 8-15
Reépait® Verifications .cs 446 soiesis Sane E
E we ads 8-17
LE BO
Exerciser veces tyes S a
Ae eda ded Saw ee aleacion 8-18
Connector Pin: Definitions'...
it o
tado 8-19
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