Diagrams; Block Diagrams (With Frame Schematic Diagram); Circuit Boards Location; Schematic Diagrams And Printed Wiring Boards - IBM 655743N - P 92 - 19" CRT Display Service Manual

SECTION 5

DIAGRAMS

5-1. BLOCK DIAGRAMS (with FRAME SCHEMATIC DIAGRAM)

D
(POWER SUPPLY,U-COM,DEFLECTION)
IC606
SW601 4 B+SW
+17V
F601 POWER 7 Q606
AC INLET
CN601 6.3A T601 SWITCH TH601 Q605 5
D601
AC L 1
AC N 3
T602
DGC T604
CN602 THP601
RY601 RY602 +180V
DGC 4
DGC 1 +180V
REG
REG OUT
IC604
Q608,609 IC603
RELAY RELAY +80V
DRIVE DRIVE
Q601 Q607
D617
VCC SW
Q602
+15V
SW
-15V
Q610
PH601
PH602 CN504
7 +180V
6 GND
IC605
5 +80V
5V REG
4 +15V
T603
I O 3 STBY5V
HEATER STBY5V 2 GND
REG SW
5 3
REG 1 HEATER
IC602
IC601
2
A
CN502
CS1
C.SYNC_1
1
VS1
V.SYNC_1 2
GND
3
CS2
C.SYNC-2 4
VS2
V.SYNC-2 5
GND 6
+15V
DDC_SDA_1 7
DDC_SCL_1 8
5V REG
HOST+5_1 9
Q002
DDC_SDA_2 10
DDC_SCL_2 11
HOST+5_2 12
SW
Q612
IC001
CPU
IC002
8 ROM
5
VCC SDA
7 100
V CLK DGC
6 99
SCL HTR SW
98
POWER SW
47
P70/IRQ0
DDC_SDA_1
DDC_SCL_1
Q604
96
PROT DET
32
DDC_SDA_2
33 72
DDC_SCL_2 LCC-RB
IC004
71
LCC-LB
EEP ROM 70
LCC-RT
5 25 69
EEP SDA EEP_SDA LCC-LT
6 26
EEP SCL EEP_SCL
CN510
44 IC005
ENV_TEMP 8 ENV_TEMP
WDT
KEY_DET 5
15 77 8
LED3 LED3 RESET RESET
E 4
14 78 3
LED2 3 LED2 WDT CK
13
LED1 LED1
2
12 38
LED0 1 LED0 ABL DET
93
HV DET
85
CN509 S0
86
USB_TX 1 S1
87
USB_RX 2 S2
39 88
KEY_DET S3
89
CN501 S4
20 90
RXD 3 RXD S5
19 82
TXD 4 TXD XTAL0
X001
9 4MHz
ASC SW
16 83
OSD_SEL XTAL1
43
+B DET
10 91
DAC SEL PIN GAIN SW
60
HFBP
2 1 65
VRET
DMP CLK 21 41
DMP_CLK
IC009 DMP DO 22
DMP_DO IIC SDA
6
DMP DI 24 29
DMP_DI IIC SCL
DMP ID 17 59
DMP_ID HS
5 63,64
4 VS
79 66
INPUT SEL ASC
94 74
MUTE H CONV
3
IC007
DPU
39
CLP OUT
38 2
CBLK OUT HTIM
46 8
SONG VIDEO OUT
7 48
VIDEO VS OUT
45 47
INPUT_SEL HS OUT
28
CN503 VDF
DMP CLK 9 32
SYNC ON G CLK HCENT
1
DMP DO 11 29
AUTO S/C 3 DO H SHAPE BAL
DMP DI 10 19
S/C ENABLE DI
4 V SHAPE
DMP ID 12 26
INPUT_SEL 5 ID VDC
6 27
CLAMP 6 FBPIN V CONV
CS1 1 2 41 34
H BLK 7 HS/CS1 MOIRE
B VS1 9 8 43
V BLK 8 VS1
CS2 13 12 42 30
C BLK 9 HS/CS2 H SHAPE
VS2 5 6 44 31
DMP_CLK 11 VS2 H SIZE
DMP_DATA 12 IC013
33
DAC_SEL 13 TILT
OSD_SEL 14 19,
IC1501
40
CURRENT AMP
CN507
2 +15V
ROTATION(-) 1 -
4 MUTE
ROTATION(+) 2 OUT
1 Q526
V.STAT+ 3 +
GAIN SW
V.STAT- 4
Q533
H.STAT+ 5
H.STAT-
6
IC1502
3
2 -
OUT 4
+
7
8 -
OUT 6
+
5-1
IC408
RGB INPUT SELECT
CN403
7 27
R IN 2 1 R_IN2 R_OUT
5 30
G IN 2 3 G_IN2 G_OUT
2 35
B IN 2 6 B_IN2 B_OUT
CN404
16
R IN 1 R_IN1
1
13
G IN 1 3 G_IN1
11
B IN 1 B_IN1
5
19
SW
5 4 3 2 1
10 9 8 7 6
CN401 G.SYNC 25
15 14 13 12 11 G.SYNC
INPUT_SEL 5 Q404~Q406
HD15 13W3 SYNC ON G 1
AUTO S/C 3
S/C ENABLE 4
IC402(4/4)
VIDEO OUT
A
Q402
B CN402
Q401
CLAMP 1
C.BLK 4
OSD_SEL 9
DAMP_DATA 7
DAMP_CLK 6
DAC_SEL
8
H.BLK 2
V.BLK
3
A
(VIDEO AMP,RGB OUT)
C
IC701
BUFFER
LCC-LB 3
- 2
OUT1
4
+
LCC-LT 7
- 8
6 OUT2
+
IC702
BUFFER
LCC-RB 3
- 2
4 OUT1
+
LCC-RT 7
- 8
STBY+5V 6 OUT2
+
V SHAPE 5
-
IC1504
VDC
V OUT
2
VRET 7
Q603
L504
HV_PROT S0 HLC
S1 S CAP T504
S2 CHANGE HST
S3 Q518,Q520
S4 Q522,Q523,Q524
RY501
9V-1 IC502
H CENT OUT 5
RELAY
S5 VCC
DRIVE H CENT
PIN AMP 2
Q527 CONTROL -VIN
Q525
Q517
1
+VIN
H CENT
H SHAPBAL VEE
3
H SIZEFB
+180V
T503
IC008
+15V PS501 HOC
+180V 9V REG PIN OUT
Q514
IC010
SYNC PROCESS
17 PIN DRIVE
PMW OUT
Q507,Q509,Q510
T501
HDT
4 24 H DRIVE H OUT
AFC1 HD OUT
9 25 Q503,Q504,Q512 Q519
SDA FBP
10
SCL
7 T502
HSYNC H DF OUT
27 19 DFT
MOIRE DF OUT Q516,Q528,Q529
14 23
PWM RFE HVD OUT Q530,Q531
+15V
V DF OUT
Q505,Q511
Q006
T901
FBT
1 7 HV DRIVE HV OUT
- H VD IN
Q901,Q903,Q904 Q906
IC901
T902
HV CONTROL
+180V HV REG SW HRC
Q905
PS901
12
PWM OUT
15
IC501 DTC
6
7 2
5 1 19 8
3 + +9V
HV_DET
IC501
DTC SW
IC011 HV_PROT
Q902
+15V
9V REG
ABL_DET
GAIN SW
Q534
5-2
IC403 IC407
RGB DRIVE RGB OUT
11 18 BUFF 1 3
R_IN R_OUT R_IN R_OUT
8 Q103 7 5
G_IN G_IN G_OUT
5 11 13
B_IN 20 BUFF B_IN B_OUT
G_OUT
Q203
23 BUFF
B_OUT
IC404 Q303
OSD
5 27 3 IC401
HFLB R R_OSD
OSD_SEL 6 26 2 D/A CONVERTER
SS G G_OSD
DAMP_DATA 7 25 1
HOSI B B_OSD IC405(1/4)
DAMP_CLK 8 24 4 26 6 3 R_CUTOFF
SCK FBKG OSD_BLK R_DRV R_DRV R_CUTOFF
22 27 7 Q101,102
V BLK
VFLB G_DRV G_DRV IC405(2/4)
28 8 4 G_CUTOFF
B_DRV B_DRV G_CUTOFF
IC402(1/4) 25 9 Q201,202
BRT BRT IC405(3/4)
15 13 12 5
CLP CONT CONT B_CUTOFF
14 13
16 OSD CONT OSDCONT
V BLK NOR BLK DAC_SEL 15
LD
DMP_CLK IC405(4/4)
16
IC402(2/4) CLK
IC402(3/4) DMP_DATA 17 19
MOSI G2 G2 CONT
Q409,Q410
CN701
LT
4 LCC-LB(-)
LCC-LB(+)
3
LB
1 LCC-LT(+)
2 LCC-LT(-)
8 LCC-RB(-)
RT
7 LCC-RB(+)
5 LCC-RT(+)
RB
6 LCC-RT(-)
CN506 V.DY
2 V.DY C
V.DY H
1
4 H.DY C
6 H.DY H
H.DY
T505
HCT
4
OUT
CN505
2 1KV D
HV
TO PICTURE TUBE
FV1
H
(USER CONTROL)
FV2
LED DRIVE
Q803
LED DRIVE
Q802
D806
POWER
S807 S806 S804 S803 S802 S801
RESET ASC BRT- BRT+ OSD CONT-
B-SS9036<NH.>-B/D-P2
TO FBT
FV1 FV2 HV
V901
PICTURE TUBE
CN407 CN408
5 KR KR 5
3 KG KG 3
1 KB KB 1
7 HEATER(+) HEATER(+) 7
G2 CN406
1 HEATER(+)
+180V 7 +180V
IC406
C
+80V 5 +80V
B_CUTOFF 12V REG
4 +15V
Q301,302
+12V O I 3 STBY 5V
+5V
CN405
D
2 1KV
B-SS9064<NH.>-B/D-P1

5-2. CIRCUIT BOARDS LOCATION

H
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.
Ï
• : 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.
• The components identified by [ in this basic schematic diagram
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.
• When replacing components identified by ], make the necessary
adjustments indicated. (See page 3-1)
• When replacing the part in below table, be sure to perform the
related adjustment.
HV ADJ
HV Regulator D board
CN801
Circuit
8 ENV_TEMP
5 KEY_DET
4 LED3
E
3 LED2
HV HOLD DOWN D board
2 LED1
1 LED0 Circuit
Beam Current D board
Protector Circuit
S800
CONT+
5-3
• All voltages are in V.
• Readings are taken with a 10 M digital multimeter.
• Readings are taken with a color-bar signal input.
• Voltage variations may be noted due to normal production
tolerances.
• : Can not be measured.
*
• Circled numbers are waveform references.
• s
: B + bus.
• S
: B – bus.
A
Note: The components identified by shading and
D 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.
Terminal name of semiconductors in silk screen
printed circuit ( * )
Device Printed symbol Terminal name Circuit
Collector
1
Transistor
Emitter
Base
Collector
2 Transistor
Base Emitter
3 Cathode
Diode
Anode
Cathode
4
Diode
Anode (NC)
Cathode
5 Diode
Anode (NC)
Common
6
Diode
Anode Cathode
Common
7 Diode
Anode Cathode
Common
8
Diode
Anode Anode
Part replaced ( [ )
Common
9 Diode
Anode Anode
RV901
Common
0
Diode
Cathode Cathode
Part replaced ( ] )
Common
!¡ Diode
IC901, R903, R922,
Cathode Cathode
T901, RV901
Anode Cathode
• Mounted D board !™
Diode Anode Anode
Cathode Anode
D913, D916, C923,
Transistor Source
!£
R920, R927, R935, Drain
(FET) Gate D D
R936, T901
G G
• Mounted D board Transistor Source
!¢ Drain S S
(FET) Gate
IC901, D901, D902,
D D
Transistor Source
D918, R053, R918, !∞
Drain G G
(FET) Gate
R923, R928, R932,
S S
R933, R934, R939, Emitter
!§
Transistor Collector
T901 Base
• Mounted D board
–
Discrete semiconductot
Ver.1.5
(Chip semiconductors that are not actually used are included.)
5-4