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SECTION 5
DIAGRAMS
5-1. BLOCK DIAGRAMS (with FRAME SCHEMATIC DIAGRAM)
SIGNAL-IN
D-SUB15
PIG-TAIL
414
313
212
1511
TO
MAIN BOARD
CN902
TO
MAIN BOARD
CN901
1-4
15
10
9
8
7
6
A
B
CN301
B GND
BLUE
G GND
GREEN
R GND
RED
GND
VD
HD
CN302
+5V
DDC SCL
DDC SDA
CPU GND
CN304
VS OUT
HS OUT
V BLK
GND
BP CLP
C SYNC
GND
ABL
CN306
+5V
DDC SCL
DDC SDA
CPU GND
1
2
3
4
5
6
7
8
9
1
2
3
4
1
2
3
4
5
6
7
8
1
2
3
4
A
(VIDEO)
V BLK
Q004
CLAMP AMP
Q001,002
IC004
EEP ROM
V CLK
?
6
SCL
SDA
5
SONG BUFF
Q008
IC001 PRE AMP,OSD MIX
11
B IN B OUTB IN
6
G IN
2
R IN
7
SOGI
19
CLAMP
15
ABL IN
SOG OUT
18
BLK
27
B OUT
G OUT
R OUT
OSDR
OSDG
OSDB
OSD BLK IN
DA4
DA3
DA2
DA1
SCL
SDA
IC002
RGB OUT
29
32
35
23
24
25
26
BRIGHT
CONT
4
9
13
1
20
21
Q007
11
9
8
B CUT OFF
G CUT OFF
R CUT OFF
13
R
15
G
17
B
12
BLK
5
SCK
6
SIN
Q301
Q201
Q101
BRIGHT
CONT
Q006
IC003 OSD
1
3
G OUTG IN
5
R OUTR IN
V SYNC
VERT
19
H
18
CS
BUFF
Q005
H SYNC
BUFF
Q003
4
R.G.B
HI
CN305
+146VS1
NC
2
+75VS
3
4
GND
5
H1
6
H2
7
+5V
GND
8
+12VS
9
10
GND
CRT
G2
TO
HV
MAIN BOARD
FBT
CN309
TO
G2
MAIN BOARD
CN502
FV
TO
MAIN BOARD
FBT
TO
MAIN BOARD
D
CN504
TO
MAIN BOARD
CN901
5-!¡
C
CN303
CS
GND
12C SDA
12C SCL
GND
HR TRC
VR TRC
1
2
3
4
5
6
7
B-SS3478<U/C>-B/D..-P1-24
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D516
T503
TO
NECK BOARD
CN306
TO
NECK BOARD
CN303
TO
NECK BOARD
CN304
C
A
B
CN901
+5V
SCL/D
SDA/D
PC/DET
CS
GND
SDA
SCL
GND
H/R
V/R
CN902
V/IN
H/IN
V BLK
GND
BP CLP
SOG
GND
ABL
CN903
SDA
+5V
SCL
GND 5
H CENT
Q519
DF AMP
Q530
HV REG
Q510,511
OUT 1
G2 CONTROL
OUT
+V IN1
D515
H OUT
Q503
Q531,532
3
H CENT
DRIVE
Q517,518
GENERATOR
EHT
Q504
Q514
L505
HLC
D522
G2 REG
CN501
H DY(+)
1
H DY(+)
2
H DY(-)
3
H DY(-)
4
V DY(-)
5
V DY(+)
6
T501 FBT
RV501
HV
ADJ
HV
TO CRT ANODE CAP
FV2
TO CRT
FV1
TO CRT
CN502
CN505
TILT
TILT
10
L570
9
D511
L503
D521
T504
DFT
2
5
3
2
D512
4
5
6
11
7
HV
12
11
14
13
1
ABL
G2
TO CRT
CN309
TILT(ROTATION)
COIL
H.DY
V.DY
IC 501
DEFLECTION
CONTROLLER
V SYNC
14
H SYNC
15 8
CLBL
16
17
H UNLOCK
SCL
18
SDA
19
D517
H DRV
V OUT2
T502
G2 CONTROL
Q531.532
2
-V IN1
+V IN1
3
OUT2
7
HDT
1
OUT 1
IC503 HV REGULATION
6
-V IN2
5
+V IN2
1
H DRIVE
Q520,521
IC401
V OUT
B DRIVE
Q515,516
3
2
TILT AMP
+VIN 1
-V IN 1
5OUT
3FLYBACK
IC504
OUT 1
13V OUT1
12
1HFLB
11EW DRV
5B IN
6B DRV
3BOP
32FOCUS
2XRAY
+V IN
7
-V IN
1
+15V
H DRIVE
OUT
Q502
H DRIVE
Q523,527
SWITCHING
Q501
IC502 HV REGULATION
57
+V IN2
OUT2
TILT DRIVE
1
Q5E2,5E3
54
RESET
SCL/D
34
SDA/D
35
PC/DET
33
CS
22
32
H/R IN
26
V SYNC/O
SOG
28
30
H SYNC/I
20
V SYNC/I
TEST
38
SDA
37
36
SCL
25
MENU/ENTER
18
RIGHT(+)
24
LEFT(-)
23
ABL
7
DEGAUSSING
13
IC901 CPU
H SYNC/O
OSC/I
H-DRV
H/CENTER
VG2
CS0,CS1,CS2
CS3
PMGO
PMGI
27
D903
46BLANK/O
D904
39
SCL
SDA
44OSC//O
X901
24MHz
45
19UFB
6H-SIZE
8
4
5
49
50
51
48
+12V
12MUTE
1TILT
15
14
D509
SW
Q534
BOP CONT
Q512,513
+5V
RESET
Q901.902
1
2
3
4
5
6
7
8
9
10
11
SOG BUFF
Q907
H SYNC AMP
Q908
1
2
3
4
5
6
7
8
1
2
3
4
V BLK
Q401
ABL CONT
Q533
SCL
SDA
IC902
EEP ROM
FRONT CONTROL
S901
S902
S903
ABL CONT
Q528,529
BP CLP CONT
Q526
7TEST
5SDA
6SCL
DGC
AC IN
CN603
DGC2
NC 2
DGC1
CN601
+15V SW
CONT
IC603
Q610
+15V SW
Q609
Q606
D602
PFC CKT
T601
D609
D610
D603
PWM CONTROL
D605
IC601
8
1
2FB
V REF
COMP
?
Vcc
I SENSE
D626 D604
6
OUT
3
SWITCHING
Q602
FB603
IC606
D601
AC RECT
(P GND)
A
R
K
LF601
F601
1
TH602
3
LFT
RY601
RELAY DRIVE
Q615
S601
TH601
T603 PIT
IC602
VOLTAGE
FEEDBACK
D615
D616
D617
D618
KA
VOLTAGE
FEEDBACK
R
+6.3V SW
CONT
Q608
+6.3V SW
Q607
+146V
+78V
+15V
-12V
+6.3V
+12V REG
I
I
IC607
IC605
+5V REG
CN504
+146V
1
GND
2
+78V
3
GND
4
+6.3V
5
GND
6
+5V
O
O
POWER SUPPLY,DEFLECTION,
CPU
D
B-SS3478<U/C>-B/D..-P2-24
7
GND
8
+12V
9
GND
10
C
TO
NECK BOARD
CN305
5-3 5-4
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5-2. CIRCUIT BOARDS LOCATION
ab1
Circuit diagram division code
Ref. No.
A
D
5-3. SCHEMATIC DIAGRAMS AND PRINTED
WIRING BOARDS
Note:
• All capacitors are in µF unless otherwise noted. (pF: µµF)
Capacitors without voltage indication are all 50 V.
• Indication of resistance, which does not have one for rating
electrical power, is as follows.
Pitch: 5 mm
Rating electrical power 1/4 W (CHIP : 1/10 W)
• All resistors are in ohms.
f : nonflammable resistor.
•
F : fusible resistor.
•
• ¢ : internal component.
p : panel designation, and adjustment for repair.
•
• All variable and adjustable resistors have characteristic curve B,
unless otherwise noted.
e : earth-ground.
•
E : earth-chassis.
•
• All voltages are in V.
• Readings are taken with a 10 MΩ digital multimeter.
• Readings are taken with a color-bar signal input.
• Voltage variations may be noted due to normal production
tolerances.
•
• Circled numbers are waveform references.
•
•
• The components identified by [ in this basic schematic diagram
• When replacing components identified by
• When replacing the part in below table, be sure to perform the
: Can not be measured.
*
s : B + bus.
S : B – bus.
have been carefully factory-selected for each set in order to
satisfy regulations regarding X-ray radiation.
Should replacement be required, replace only with the value
originally used.
necessary adjustments indicated. (See page 3-1)
related adjustment.
] , make the
• Divided circuit diagram
One sheet of D board circuit diagram is divided into three
sheets, each having the code D-a to D-c . For example, the
destination ab1 on the D-a sheet is connected to ab1 on the
D-b sheet.
Part replaced ( [ )
HV ADJ
HV Regulator
Circuit Check
HV Hold-down
Circuit Check
Beam Current
Protector Circuit
Check
D Board IC502, IC503, C501
D Board IC501, D521, C585
D Board Q533, D592, C590
RV501
Part replaced ( ] )
C535, C553, C597
C598, R592, R593
R596, RV501,
T501 (FBT)
C599, R598, R599
R5C7, T501 (FBT)
C591, C598, R5A5
R5C0, R5C3, L502
T501 (FBT)
Note: The components identified by shading and mark
! are critical for safety. Replace only with part
number specified.
Note: Les composants identifiés per un tramé et une
marque ! sont critiques pour la sécurité. Ne les
remplacer que par une pièce portant le numéro
spécifié.
5-5