A
1
2
3
4
5
B
C
D
!
CHARTS AND DIAGRAMS
NOTES OF SCHEMATIC DIAGRAM
Safety precautions
The Components indentified by the symbol
are
critical for safety. For continued safety, replace safety
critical components only with manufacturer's recom-
mended parts.
1. Units of components on the schematic diagram
Unless otherwise specified.
1) All resistance values are in ohm. 1/6 W, 1/8 W (refer to
parts list).
Chip resistors are 1/16 W.
K: K
Ω
(1000
Ω
), M: M
Ω
(1000K
Ω
)
2) All capacitance values are in µF, (P: PF).
3) All inductance values are in µH, (m: mH).
4) All diodes are 1SS133, MA165 or 1N4148M (refer to parts
list).
2. Indications of control voltage
AUX : Active at high.
AUX or AUX(L) : Active at low.
3. Interpreting Connector indications
Note: If the voltages are not indicated on the schematic
diagram, refer to the voltage charts.
1
2
3
2.5
(5.0)
1.8
PB and REC modes
(Voltage of PB and REC modes
are the same)
PB mode
REC mode
4. Voltage measurement
1) Regulator (DC/DC CONV) circuits
REC : Colour bar signal.
PB : Alignment tape (Colour bar).
—
: Unmeasurable or unnecessary to measure.
2) Indication on schematic diagram
Voltage indications for REC and PB mode on the sche-
matic diagram are as shown below.
6. Indication of the parts for adjustments
The parts for the adjustments are surrounded with the circle
as shown below.
7. Indication of the parts not mounted on the circuit board
“OPEN” is indicated by the parts not mounted on the circuit
board.
R216
OPEN
1
2
3
1
2
3
1
2
3
1
4
2
3
Removable connector
Wire soldered directly on board
Non-removable Board connector
Board to Board
Connected pattern on board
The arrows indicate signal path
Note: The Parts Number, value and rated voltage etc. in
the Schematic Diagram are for references only.
When replacing the parts, refer to the Parts List.
Note: For the destination of each signal and further line
connections that are cut off from the diagram,
refer to "BOARD INTERCONNECTIONS"
A
C
IN
Line filter
L901
AC
-D
C
D901
Po
w
e
r
tr
ansf
or
mer
T901
Switching
regulator
IC901
AC
-D
C
D904
C914
AC
-D
C
D952 C951 C953
AC
-D
C
D955 C958 C959 L952
AC
-D
C
D954 C967 C988 L955
AC
-D
C
D953 C952 C955 L951
A
C-DC
D956,L953,C963,C965
A
C-DC
D957,L954,C964,C966
FEED BA
CK
PC901
AC
-D
C
D951 C950
T
O
CN1
SHEET 1
-VDISP
B5.7V
M9V
B3.3V
+12V
-12V
T
O
FW401
SHEET 4
CN902,CN903
CN901
B3.3V
F-
F+
Power supply and FL Display section (SHEET 1)
CN1
CN2
T
O
CN901
SHEET 1
T
O
CN402
SHEET 4
FL Displa
y
DI1
Standb
y LED
D1
FL Displa
y dr
iv
er
IC1
Remote controller
IC2
P
o
w
er s
witch
S1
Oper
ation s
witch
S2 to S8
DIMMER R
D7
DIMMER L
D6
F+ F-
-VDISP
S1 to S4 S6 S7
LED1 LED2
LED1 LED2
LED3 LED4
VFDIO
VFDCLK
VFDCS
GR1-GR11
SG1-SG17
REMO
CN5
CN6
CN8
CN4
CN7
CN3
Block diagrams
2-1
2-2
