Hv Regulator Circuit Check; Hv Protector Circuit Check - Dell P992 Service Manual

HV ADJ
D Board C909, IC501, R901,
HV Regulator
Circuit Check
HV Protector D Board C920, C923, D911,
Circuit Check
N Board IC1001, RB1001
Beam Current D Board C930, D917, R921,
Protector Circuit
Check
N Board IC1001, RB1001
Part Replaced ([)
RV901
Part Replaced (])
R902, R906, R910,
R913, RV901,
T901 (FBT)
• Mounted D Board
D912, R903, R917,
R918, R919, R920,
R923, T901 (FBT)
• Mounted D Board
• Mounted N Board
R932, R933, R935,
T901 (FBT)
• Mounted D Board
• Mounted N Board
Terminal name of semiconductors in silk screen
printed circuit ( )
*
Device Printed symbol Terminal name
Collector
1 Transistor
Base Emitter
Collector
2 Transistor
Base Emitter
Cathode
3
Diode
Anode
Cathode
4
Diode
Anode (NC)
Cathode
5 Diode
Anode (NC)
Common
Diode
6
Anode Cathode
Common
7 Diode
Anode Cathode
Common
8
Diode
Anode Anode
Common
9 Diode
Anode Anode
Common
0 Diode
Cathode Cathode
Common
qa Diode
Cathode Cathode
Anode Cathode
qs Diode Anode Anode
Cathode Anode
Source
Transistor
Drain
qd
(FET) Gate
Source
Transistor
Drain
qf
(FET) Gate
Source
Transistor
qg
Drain
(FET)
Gate
Emitter
qh Transistor Collector
Base
–
Discrete semiconductot
(Chip semiconductors that are not actually used are included.)
Circuit
D D
G G
S S
D D
G G
S S
Ver.1.6
P992 (E) 4-7