Proview 786PF service manual Work

Page 26

OSD DOES NOT No

WORK

Yes

IC201 (19)

No

IC201(24)

OSD G

 

 

 

5V0-P?

 

7V ?

 

Yes

 

 

 

 

 

 

 

IC202 (3)

No

CHECK

 

5 V0-P?

 

M703

 

BLK ?

 

 

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

IC203

No

CHECK

(8)

 

 

 

12 V ?

 

12V

 

Yes

No

 

 

 

 

 

 

 

 

 

IC201

CHECK

 

(10)

 

 

 

5 V ?

 

IC201

 

Yes

 

 

 

 

 

 

 

 

 

 

 

IC201 (7)

 

CHECK I/P

0.7VP-P?

 

SIGNAL

 

 

 

IC201

 

 

CHECK

(19)

 

 

IC901

0.4 V ?

(32)

ple : Missing Green

Condition : OSD on

YesYes

CHECK

IC201

NoNo

Yes

26

CHECK

IC201

Image 26
Contents 786PF Table of Contents Important Safety Instruction Specifications SCL OFFSDA Control Location Adjustment Control Location FBT GND MAXABL Static Page Page Block Diagram Page Page Page Page Page Bright HOR. LINEH. Trouble Shooting Hints Raster Deflective HOR. CKT Vesa Standard Dpms LED No Rotation Missing ONE Color CRT KG Work Replacement Parts List 1KΩ 1MΩPage NTC 1KΩ R-NF82KΩ R-MNF 2W PTC75KΩ R-MNF 2K,VRPHM 2KVNPO 1KV PHM1KV MEMMPP CRT SocketHMPSA44 CPUHSB772S HZ18V HZ5C1HZ13V HZ30VCRT Power CordSignal Cable FBTMain Board Soild Side Schematic Diagram Memo Page Page Page Page