Sony HMD-A230 Service Manual page 25

HV ADJ
HV Regulator
D board
Circuit Check
HV Protector D board
Circuit Check
D board
Beam Current
Protector Circuit
Check
Part Replaced ([)
RV501
Part Replaced (])
IC501, C532, C534,
C539, C553, C554,
C555, C556, C558,
C561, R540, R541,
R542, R544, R564,
R567, R568, RV501,
T501 (FBT)
IC607, IC901, D515,
D517, C540, C542,
C544, C951, R510,
R543, R547, R549,
R552, R595,
T501 (FBT)
IC605, IC607, IC901,
C535, C541, R545,
R546, R548, R550,
R596, R934,
T501 (FBT)
Terminal name of semiconductors in silk screen
printed circuit ( )
*
Device Printed symbol Terminal name
Collector
1 Transistor
Base Emitter
Collector
Transistor
2
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
HMD-A230 (E) 4-6