Samsung SRP-350PG Service Manual - Page 90
Samsung SRP-350PG - SRP 350 B/W Direct Thermal Printer Manual
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9-9 IEEE-1284 Parallel Communication Problem 9 Troubleshooting IEEE1284 Problem Froward Mode Y Failure? N 1. Check the Control Line(CS3) 2. Check the 1284 Control Line and Status Line 3. Check the Signal of ICs(U3, U6, U5) 4. Check the 1284 Cable whether it is open or short 5. Check the related Circuit and Pattern on I/F PBA Reverse Mode Y Failure? N 1. Check the Control Lines(CS3, WR, P_WR) 2. Check the 1284 Control, Status Data Line 3. Check the Signal of ICs(U1, U3, U6) 4. Check the 1284 Cable whether it is open or shortl 5. Check the related Circuit and Pattern on I/F PBA End Samsung Electro-Mechanics 9-9
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Samsung Electro-M
e
chanics