PHILIPS 28PT7156
Manual de Servicio

Wiring diagram, blockdiagram, supply diagram and testpoints

EM2E

6.

36

Wiring diagram
TOP CONTROL PANEL P
0902

I2C overview
B5
0202 (2)

OTC
7001 SAA5800H

A7

TUNE, I/O, SIMM-CONNECTOR (FEMALE)
1200 UV1316/A I U-2

B2

IF, I/O VIDEOPROCESSING
7313 TDA9320

B4

HOP
7301 TDA9330H

LEFT (WHITE) 0936 (11) 0901 CVBS (YELLOW)

88
0383 (3) SVHS SCAVEM n.c.

SDA SCL

TUNER
13
5 4003 4004 SDA DATA-IN-OUT I2C FAST BUS DATA CLOCK I2C SLOW BUS 4 SCL 1 2 3 COMPAIR CONNECTOR SERVICE

HIP
8
47 46 SDA SCL

HOP
7
11 10 SDA SCL

CRT PANEL F

0923 (2) COIL

87

FOCUS E

OTC
0340 (11) 0201 (2)

0943

MAIN SWITCH PANEL

86

SMALL SIGNAL BOARD

91 92

85

0224 (7)

I2
I2C3 NVM BUS
1000 (80)

I3

V9

V10

V23

V22

0334 (1)

SDA

SCL 7011 M24C32

0947 (5)

5

6

NVM
LARGE SIGNAL PANEL

10

B6

AUDIO DEMODULATOR
7651 MSP3415D

B3

FEATURE BOX
7709 SAA4978H 7708 SAA990H

0945 (3)

MSP
0010

PICNIC
3
1 2

PROZONIC
SNERT-DA 61 SNERT-CL 62

14
n.c.

18

2
SUBWOOFER 0737 (3) 0045 (5)

1 SCL

SDA
1003 (1)

89 88 5 4 SCL SDA SCL CLK-16 CLK-32 7714 MSM54V/2222A

CENTRE 0738 (3)

SDA
0324 BLACK LEFT SPEAKER 0736 (3) (7)

FIELD MEMORY
20 1 15 26 7715 MSM54V/2222A

A15

A14

17

B
0317 (2)

0947 (5)

(2)

CLK-16
0936 (11)

FIELD MEMORY
15 26

17

(connected to deflection coil)

CLK-32
LOT

Focus VG2

white red

V18

V17

A

1902 (3) 1901-A/B

(2x21) 1201 (1)

Error Device
9943 (3) SCART

Description
BC-PROT HFB PICNIC 5V2 8V6 HOP video control/geometry HIP I/O-video processing NVM TUNER_prot Tuner ITT sound processor + Dolby FBX_PROT DNR-memory PROZONIC

Defective item

Diagram

Defect. module indication
Beam Current Horizontal Flyback

0945 (3)

1205 (80)

1 2
compair EHT

Beam Current protection H fail protection SAA4978 Supply 5V Supply 5V Slow I2C-bus blocked TDA9330 TDA9320 X-ray protection ST24E32 HOP protection Tuner protection UV1316 MSP3451/3415 Flash protection Featurebox protection SAA4956 SAA4990

0940 (11)

VG2

3
120100

7709

B3

Feature Box +5V Supply +8V Supply Slow I2C blocked

0946 1409 (2) (2)

4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

CRT

RED

1200 0325

interface CL 06532156_033.eps

7301 7323 7011

B4 B2 A3 B5

Video Controller Chroma IF IO Control +8V (Tuner) Supply

0345 (3)

RIGHT SPEAKER 0735 (3)

SW 0739 (3)

U1200 7651

A7 B6

Tuner Audio Module

HEADPHONE

7714 7708

B3 B3

I/O DEFLECTION COIL PANEL O

RIGHT (RED)

CL96532156_034.eps 140100