Circuit Boards Location; Schematic Diagrams And Printed Wiring Boards - HP D2846 Service Manual

5-2. FRAME SCHEMATIC DIAGRAM
CONNECTOR PANEL
1 2 3 4 5 6 7 8 9 10
R L 1 2
C1 C5 C2
Aud.Out Ret. Sync.ret H sync V sync RESERVED TPA/ TPA
11 20
Chg+ Chg- Y in Y/C Ret. C in Data+ Data- Shield Vg Vp
C3 C4
21 L R 30
HOST+5V
Aud.Input Ret. S Sync DDC Ret. SDA SCL +5VDC TPB TPB/
U3
(CONNECTION BOARD)
5 4 3 2 1
10 9 8 7 6
15 14 13 12 11
DCC SCL2
V SYNC2
C SYNC2
DDC SDA2
CN511 CN505 CN506
11P 4P 8P
WHT WHT WHT
:S-MICRO :S-MICRO
H.DY 1 GND
2 V.DY C
3 V.DY H
4 NC
V.DY 5 H.DY C
D
6 H.DY C
NC
V.DY 7
8 NC µ-COM,
FASTEN
9 H.DY H DEFLECTION
10 H.DY H
CN520 CN508 CN512 CN501
CN901
ROTATION+ 6 2 ROTATION+ 6P 9P 9P 9P
ROTATION 5P
WHT WHT WHT WHT YEL
ROTATION- 5 1 ROTATION-
:S-MICRO :VH :S-MICRO :S-MICRO :S-MICRO
H STAT+ 4
CN509
H.STA
H STAT- 3 2P
WHT
V STAT- 2
:S-MICRO
V.STA
V STAT+ 1
CN5001
CN5002
9P
6P
LCC-LT 1 LCC-LT(+) WHT
WHT :S-MICRO
:S-MICRO
2 LCC-LT(-)
3 LCC-LB(+)
LCC-LB H
CN5003 V.STAT,H.STAT,
4 LCC-LB(-) 10P L
LCC,GEO,
WHT
LCC-RT 5 LCC-RT(+) (USER CONTROL)
:S-MICRO MAGNETIC SENSOR
6 LCC-RT(-)
LCC-RB 7 LCC-RB(+)
8 LCC-RB(-)
LCC-NS 9 LCC-NS(+) CN5004
4P
10 LCC-NS(-)
WHT
:VH
– 27 –
D2846 D2846
R IN 1
1
2 R GND 1
CN401
3 G IN 1 6P
WHT-L
4 G GND 1
:S-MICRO
G2 GND
5 B IN 1
6 B GND 1
G2 GND
C BLOCK
CN1
CN2
1 R IN 2 14P
14P
2 R GND 2
3 G IN 2 KB 1 1 KB
CN402
4 G GND 2 7P KB 2 2 KB
WHT-L
5 NC GND 3 3 GND
:S-MICRO
6 B IN 2 GND 4 4 GND
RCV
7 B GND 2 KG 5 5 KG
KG KG
6 6
H
GND 7 7 GND
1 CLP
GND 8 8 GND
2 BKGP A
KR 9 9 KR
C.BLK
3
KR 10 10 KR
CN403 KB KR G2
4 GREEN
8P VIDEO AMP, GND 11 11 GND KG G1 GM
5 GND WHT-L
RGB OUT G1 12 12 G1
:S-MICRO
6 INPUT SW
GND GND
13 13
7 GND
HEATER + 14 14 HEATER +
8 VIDEO
FV1
1 ASC_SW
HSTAT
2 OSD_SEL FV2
3 MOSI
CN407
4 CLK 7P
WHT-L
5 DAC_SEL :S-MICRO HSTAT
6 HFBP
7 VRET
CN405
CN406 9P
1 1KV 2P WHT-L
WHT :S-MICRO
2 NC :VH
CN671
CN502 11P
11P
WHT
WHT CN672
:S-MICRO :S-MICRO
9P
WHT
HCENT H 1 1 H CENT H
:S-MICRO
FBT
HCENT N 2 2 H CENT N
CN503 CN507 HCENT L 3 3 H CENT L
2P
7P
WHT +200V +200V
WHT 4 4
:VH
:S-MICRO
+200V 5 5 +200V
NC 6 6 NC
+80V 7 7 +80V
GND 8 8 GND
+15V 9 9 +15V
G
GND 10 10 GND
-15V -15V (POWER SUPPLY)
11 11
CN673
CN504
5P
5P
WHT
WHT
:S-MICRO
:S-MICRO
DGC 1 1 DGUS SW
CN514 CN510
3P 3P POWER 2 2 POWER SW
WHT WHT
HTR_SW 3 3 HEATER SW
:S-MICRO :S-MICRO
STBY 8V 4 4 STBY+8V
GND 5 5 GND
CN603 CN604
4P
3P
WHT
WHT
:VH :VH
FASTEN
(CRT SHIELD)
CN801
11P
WHT DGC AC INLET
:S-MICRO L
G4
HV
CN891
3P
CN605 WHT
3P :VH POWER SW
AC L OUT AC L OUT
1 1
NC 2 2 NC
AC L IN 3 3 AC L IN
J
(POWER SW)
CN610
10P
B-TO-B
GND 1 1 GND
GND 2 2 GND
DRIVE 3 3 DRIVE
I SENCE 4 4 I SENCE
CN7501
VCC 5 5 VCC
10P
V SENCE 6 6 V SENCE B-TO-B
L SENCE 7 7 L SENCE
AC SENCE 8 8 AC SENCE GA
OVP 9 9 OVP
LVP 10 10 LVP (POWER SENSOR)
– 28 –

5-3. CIRCUIT BOARDS LOCATION

Note: The components identified by shading and mark
U3
¡
D are critical for safety. Replace only with part
A
number specified.
Note: Les composants identifiés per un tramé et une
¡
marque sont critiques pour la sécurité. Ne les
G
remplacer que par une pièce portant le numéro
spécifié.
L
• 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
GA
tolerances.
• * : Can not be measured.
• Circled numbers are waveform references.
s
• : B + bus.
H
S
• : B – bus.
J
Terminal name of semiconductors in silk screen
printed circuit (
5-4. SCHEMATIC DIAGRAMS AND
Device Printed symbol
PRINTED WIRING BOARDS 1
Transistor
Note:
2
Transistor
• All capacitors are in µF unless otherwise noted. (pF: µµF)
Capacitors without voltage indication are all 50 V.
3
Diode
• Indication of resistance, which does not have one for rating
electrical power, is as follows.
4
Diode
Pitch: 5 mm
Rating electrical power 1/4 W (CHIP : 1/10 W)
5
Diode
• All resistors are in ohms.
f
• : nonflammable resistor.
Ï 6
Diode
• : fusible resistor.
¢
• : internal component.
p
7
Diode
• : panel designation, and adjustment for repair.
• All variable and adjustable resistors have characteristic curve B,
8
unless otherwise noted.
Diode
e
• : earth-ground.
E
• : earth-chassis.
9
Diode
[
• The components identified by in this basic schematic diagram
have been carefully factory-selected for each set in order to
0
Diode
satisfy regulations regarding X-ray radiation.
Should replacement be required, replace only with the value
!¡
originally used. Diode
]
• When replacing components identified by , make the
Transistor
necessary adjustments indicated. (See page 18) !™
(FET)
• When replacing the part in below table, be sure to perform the
related adjustment. Transistor
!£
(FET)
]
Part replaced ( )
Transistor
!¢
HV Regulator D Board IC901, T902
(FET)
Circuit Check • Mounted D board
!∞
Transistor
HV Protector D Board Q660, Q661, D916, D935,
Circuit Check C924, R665, R667, R940,
– Discrete semiconductot
R980, T902
• Mounted D board (Chip semiconductors that are not actually used are included.)
G Board PH680, Q680, Q683, D680,
R680, R685, R686, R687,
R688, R689
• Mounted G board
Beam Current D Board IC901, D904, D907, D908,
Protector R011, R908, R909, R921,
Circuit R925, R926, R929, R930,
Check T902
• Mounted D board
– 29 –
D2846
)
*
Terminal name Circuit
Collector
Base Emitter
Collector
Emitter
Base
Cathode
Anode
Cathode
(NC)
Anode
Cathode
Anode (NC)
Common
Anode Cathode
Common
Anode Cathode
Common
Anode Anode
Common
Anode Anode
Common
Cathode Cathode
Common
Cathode Cathode
Source
Drain
D D
Gate
G G
Source
Drain S S
Gate
D D
Source
Drain G G
Gate
S S
Emitter
Collector
Base
Ver.1.4