Proview P6NS Series service manual Bright HOR. LINEH. Trouble Shooting Hints

Page 22

BRIGHT HOR. LINEH. TROUBLE SHOOTING HINTS

APPEAR ON THE

SCREEN

NO POWER

T501 (7)

160 V ?

Yes

IC501 (7)

＞14 V ?

Yes

IC501(6) 14Vp-p ?

Yes

D510 (-)

15.5V ?

Yes

CIRCUIT

SHORT

No

No

No

No

CHECK F501,D514 , D515,D516, D517

CHECK

IC501,R539,

D505,ZD551

CHECK

IC501,Q504

CHECK

D510,Q501,

Q508

T501(7) VOLTAGE

AC120V IN 160V

AC220V IN 294V AC230V IN 308V

22

Image 22

Contents P6NS Series Table of Contents Important Safety Instruction For Model 786NS,986NS Series OFF 30 70 KHz ----- 572NS Series787NS Series 100W max. -----777NS,786NS Series772NS Series SDA17.56 × 18.11 × 18.70 inch Timing Chart Video Sync Period Active Sync Width Back Porch Front porchControl Location FBT Preset ﹟Test Meter Adjusting ﹡Test Point OperationAdjust ﹫Pattern ValueWhite Operation Adjusting Value PresetBackground BalancePurity Operation Adjusting Value DynamicFocus StaticPage Page Block Diagram Page Page Page Page Page Bright HOR. LINEH. Trouble Shooting Hints Line Check Raster CRT G1 Deflective HOR. CKT Vesa Standard Dpms 7V Line Noosdcharactersdoes not Missingworkone Replacement Parts List 1KΩ Location Parts Number Parts Description ’ty1MΩ R2A7 Open R992,716,722,722A 986NS,787NS,786NS 7KΩ 1KΩ R-NF 82KΩ R-MNF30Ω R-MNF NTCPTC 75KΩ R-MNFR781 986NS,787NS,786NS Open 772NS Short R780 R794 82KΩ PHM 2KVNPO 1KV PHMMPP MEM1KV HSB772S CRT SocketCPU BSN254AHZ5C1 HZ13VHZ30V Signal CableHZ18V HZ56VFBT PFC Assembly Kit For 17/19CRT HER308GConduction View Main Board Soild Side Schematic Diagram