HP 8110A Service Manual page 11

In strum en ts Fitte d with Out put 1 B oard and Outpu t
2 Board
. . . . . . . . . . . . . . . . .
5-16
R
e m ovin g t he Fans . . . . . . . . . . . . . . 5-18
R em ovin g t h e Front
P ane l . . . . . . . . . . .
5-19
How to
R
e m ove P C Board s
f rom Plastic Supp ort
Clip s . . . . . . . . . . . . . . . . . . . 5-20
The Fron t
P anel
S
ub assembli es . . . . . . . . .
5-21
R e moving t h e
F
ront P anel
S
ub assemblies . . . .
5-22
R eplac ing or
R
efitting the
F ro nt P ane l
S
ubasse mblies 5-24
How to Fi t
P
C Boards in to Plast i c Supp ort C lip s . 5-24
P
oin ts to O b ser ve wh en Refitting or
R e pl acing
F
ront
P anel
S
ubassembli es . . . . . . . . . . . . 5-24
R
em ovin g the Inpu ts/Outputs Bloc k . . . . . .
5-26
R eplacing or
R
efitt ing the Inputs/O ut puts Block
a n d
Cab les . . . . . . . . . . . . . . . . . .
5-26
R
emoving th e M emory Card Co nnector B oard . .
5-31
R eplacing or
R
efitting th e M emory Card Conn ector
Board
. . . . . . . . . . . . . . . . . . 5-31
R
emo ving t h e M emory Card Block . . . . . . .
5-32
R emo vin g the M ot herb oard
. . . . . . . . . .
5-33
R
epl ac ing or
R
efittin g the M other b oard . . . . .
5-34
6.
R
e placea ble
P
arts
E xch ange
P
arts List
. . . . . . . . . . . . . .
6-1
E xch ange
B oards . . . . . . . . . . . . . . .
6-1
R epl acement B oards
. . . . . . . . . . . . .
6-1
HP 8110 Α
P
arts List
. . . . . . . . . . . . . .
6-2
HP 81103 Α
P arts List . . . . . . . . . . . . . .
6-8
HP 81106 Α
P
arts List . . . . . . . . . . .
HP 81107 Α
P arts List . . . . . . . . . . . . . .
6-10
7.
Functional Descr ip tion
In troduct io n . . . . . . . . . . . . . . . . . .
7-1
The Fun ctional Uni ts . . . . . . . . . . . . . .
7-2
P
ower S upply Uni t . . . . . . . . . . . . . . .
7-4
Fun ct i onal Uni ts on the P C B oard . . . . . . . 7-6
P rimary Sect i on
. . . . . . . . . . . . . . . .
7-7
Fil tering and Overvol tage
P
rotection . . . . . .
7-7
Fu se and S witc h
. . . . . . . . . . . . . . .
7-7
B ri dge
R
ect ifier an d Blocking Capac itor . . . . . 7-7
PWM Control Uni t, Switchin g
T ra nsi stors, and
T ran sform er . . . . . . . . . . . . . . .
7-7
O v erl oad P rotection
. . . . . . . . . . . . .
7-8
'So ft-start' at Power-up . . . . . . . . . . . .
7-8
T
emp erat u re Co ntrol . . . . . . . . . . . . .
7-8
Secon dar y Secti on . . . . . . . . . . . . . . . 7-9
R ect i fier and Filter
f
or
D C S upplies . . . . . . . 7-9
-5 .2 V S upply : Direct Po w er Co ntrolled . . . . .
7-9
±32 V, ±12 V, +5 .1 V
S
upplies: Linear Power
Controlled . . . . . . . . . . . . . . . . 7-9
+32 V Reg ulator Gate S upply . . . . . . . . .
7-9