Samsung SPK4215M Manuale Utente

Plasma Display Training 1 This training will cover the following models: • SPK4215M (display only) • SPK4215 (with

Plasma Display Training 10 X driver PCB, waveform is 12 sub fields signal. 300Vpp / 2ms TEST POINT “CN4006”12 sub fields 3 most significant sub

Plasma Display Training 11 .Volts and waveforms from Top Address Buffer PCB test points. Use figures to locate test points. TPUSTB / UBLK / UPOL

Plasma Display Training 12 Volts and waveforms from Lower Address Buffer PCB test points. 300Vpp / 2ms Use figures to locate test points. TPLSTB / LB

Plasma Display Training 13 What the screen will look like for different problems. Kit with all PCBs will be used to service set. 1. x driver 2. y driv

Plasma Display Training 14 Black bar from left to right. Y or X buffer problem.

Plasma Display Training 15 Grainy picture, green bar is dark. Y driver problem.

Plasma Display Training 16 Picture very dark. Y driver problem.

Plasma Display Training 17 Segment of picture missing on top, address line buffer (top side)

Plasma Display Training 18 Top of picture is dark and distorted, -132 supply voltage is low. If voltage goes too high, display shuts down. When voltag

Plasma Display Training 19 Picture distorted, green bar will be affected first. -55 volts is low. When voltage is low, check VR5201 adjustment on Y dr

Plasma Display Training 2 Rear view of back cover

Plasma Display Training 20 Top part of picture is dark. Y- driver problem, bad connection at CN5003.

Plasma Display Training 21 Notes.

Plasma Display Training 3 Rear view, cover removedX drive PCB Sub smps PCB Main smps PCB Y drive PCB Scaler PCB (TOP) logic PCB (BOTTOM) Address PCB

Plasma Display Training 4 Part #’s SPK4215M / D1 chassis / 6 fans kit part # ST-SPK4215MF SPK4215M / D3 chassis / fan less kit part # ST-SPK4215M Part

Plasma Display Training 5 Main SMPS power supply, shows location of connectors. Small figure is location of (sub SMPS power supply) SA SL SY S

Plasma Display Training 6 When making the connection; be careful. Brown connector is very fragile.

Plasma Display Training 7 Always check power supply voltages. Voltages are measured with power on, unless noted. Connector SA / Scalier Connector

Plasma Display Training 8 Volts and waveforms from Front panel PCB test points Connector CN50, power button Pin 1 Blue wire, 5 volts dc, goes low (0V

Plasma Display Training 9 Volts and waveforms from Y – buffer PCB test points. Use figures to locate test points. TPVL / TPVH Waveform is 300V