philips ps-424-ph_lj44-00101c_psu free download

File name philips_ps-424-ph_lj44-00101c_psu_repair-tips_[ET].pdf

996500033880 SDI PSU (LJ44-00101C) repair tips May 21, 2009 SDI PSU (LJ44-00101C) 2 SDI PSU (LJ44-00101C) · This document describes how to activate error codes in stand alone mode and what to check based on the errors observed. 3 Difference between Rev 0.65 and Rev 0.7 7 types of errors could be detected by Alarm board 4 Difference between Rev 0.65 and Rev 0.7 Two extra errors detected by Alarm board 5 Preparation May 21, 2009 Jigs required to activate error codes Jig 1 is connected to socket CN1M03 Pin 7 and pin 4 are connected to the switch as shown below: Jig 1 7 Function of jig 1 - When this switch is turned on, relay should give click sound - LED8001 and LED8002 should turn ON CN1M03 LEDs 8 Jigs required to activate error codes Jig 2 is connected to socket CN8006 to short circuit Vs_On (pin 9) and D3V3 (pin 2) together. Jig 2 9 Function of jig 2 - When jig 1 and jig 2 are switched on, alarm board can be activated to generate error codes via LED BD8903 on alarm board. CN8006 10 Jigs required to activate error codes Jig 3 is connected on alram board to short circuit two pins located on right hand side BJ8902 : Vs_ON ENABLE Jig 3 11 Function of jig 3 - When jig 1 and jig 2 and jig 3 are switched on, LED on alarm board would generate error code if PSU is faulty LED BJ8902 : Vs_ON ENABLE 12 What is next? · · · · · Remove all the plugs from PSU Insert the three jigs which you made Apply power Look for LED on alarm board If LED is blinking, count the number of blinks and see relevant repair tip 13 Error codes Error detection condition VA OVP, UVP 12V OVP, UVP VSCAN OVP, UVP D3V3 OVP, UVP VS OVP, UVP Vg OVP, UVP VSET OVP, UVP VE OVP, UVP Over Temperature PFC_OK UVP 5V2 OVP or Active DC_PROT Time Over D5VL OVP, UVP OVP: Over Voltage Protection UVP: Under Voltage Protection 14 No. of times LED blinking 1 2 3 4 5 6 7 8 9 10 11 12 13 Protection Circuit Specification HIC8001 PIN Low level High level Normal level Output Output Normal OVP UVP Error Relay 14 Normal High (5.2V ± 0.1V) Below 1.56V Above 3.64V Active Low (Below 0.9V) Normal High (5.2V ± 0.1V) Below 1.56V Above 3.64V 330V Active Low (Below 0.3V) Below 1.68V Above 3.36V Below 1.91V Above 3.45V 2.49V 2.53V 3.5V 2.5V 7.0V 4.5V 77V 14.4V 380V 5.2V 3.3V 70.0V 12V 10 13 4 PFC_OK D5V D3V3 15 9 7 Vg Va 12V Ve Vset Vscan Vs Vs_on Temp DC_Prot 5V2 8 2 5 4 3 6 1 17 16 10 10 Below 1.66V Above 3.58V Below 1.74V Above 3.35V Below 2.00V Above 3.00V Below 1.79V Above 3.08V Below 1.92V Above 3.20V Below 3.25V Above 1.91V Below 1.90V Above 2.79V Below 1.56V Above 3.64V Below 0.40V Above 0.60V Below 6.40V Above 7.15V 2.5V 3.04V 2.5V 2.69V 2.5V 2.58V 2.5V Active Low Active High Active High 10V 40V 9.6V 70V 150V 140V 160V 21.5V 15.0V 6 1 2 8 7 3 5 9 11 120V 105V 250V 195V 240V 190V 235V 210V Below 0.60V Above 2.00V Active High (Above 2.5V) 6.8V 5.2V 11 15 Location of supply voltages from PSU to the boards 16 Voltage test points 42" SD v5, 42" HD w1, 50"