LG 50PC1DR Owners Manual - Page 61

How to check IPM Dual Scan

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How to check IPM (Dual Scan) (Resistance 'Diode Check', board removed from set) For both IC2 and IC7 Troubleshooting Forward Test : 1. +VS ( - ), SUS_OUT ( + ) 2. SUS_OUT ( - ), CH GND ( + ) 3. CH GND ( + ), ER_HIGH( - ) 4. +15 ( - ), CH GND ( + ) 5. +5 ( - ), CH GND ( + ) 6. SUS_UP ( - ), CH GND ( + ) 7. SUS_DN ( - ), CH GND ( + ) 8. ER_UP ( - ), CH GND ( + ) 9. ER_DN ( - ), CH GND ( + ) Reverse Test: 1. +VS ( + ), SUS_OUT ( - ) 2. SUS_OUT ( + ), CH GND ( - ) 3. CH GND ( + ), ER_HIGH ( + ) 4. +15 ( + ), CH GND ( - ) 3.03 5. +5 ( + ), CH GND ( - ) .96 6. SUS_UP ( + ), CH GND ( - ) 1.42 7. SUS_ DN ( + ), CH GND ( - ) 1.42 Note: ER_HIGH to ER_IO ( OPEN ) SUS_OUT to ER_IO ( SHORT ) Plasma Display Panel Troubleshooting - 2007 61

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61
Plasma Display Panel Troubleshooting - 2007
Forward Test : 1. +VS ( - ), SUS_OUT ( + )
2. SUS_OUT ( - ), CH GND ( + )
3. CH GND ( + ), ER_HIGH( - )
4. +15 ( - ), CH GND ( + )
5. +5 ( - ), CH GND ( + )
6. SUS_UP ( - ), CH GND ( + )
7. SUS_DN ( - ), CH GND ( + )
8. ER_UP ( - ), CH GND ( + )
9. ER_DN ( - ), CH GND ( + )
Reverse Test:
1. +VS ( + ), SUS_OUT ( - )
2. SUS_OUT ( + ), CH GND ( - )
3. CH GND ( + ), ER_HIGH ( + )
4. +15 ( + ), CH GND ( - ) 3.03
5. +5 ( + ), CH GND ( - ) .96
6. SUS_UP ( + ), CH GND ( - ) 1.42
7. SUS_ DN ( + ), CH GND ( - ) 1.42
Note: ER_HIGH to ER_IO ( OPEN )
SUS_OUT to ER_IO ( SHORT )
How to check IPM (Dual Scan)
(Resistance ‘Diode Check’, board removed from set)
For both IC2 and IC7
Troubleshooting