5-2
Flow chart of trouble shooting
5-2 Initial
Initial Failure
Check and repair the important
signals of U414 as follows
END
No
U452 pin 4 = "H" ?
The node
between R312 and C325
= "H" (RST)
No
Check the circult
related to reset
R348 = "H" (BOOT)
No
Resolder R348
Yes
Yes
R440 = "H" (MSIZE)
No
Resolder R440
Yes
R438 = "L" (EXTPROC)
No
Resolder R438
Yes
Replace PBA
Check all the other connection
by Test S/W
Check the circuit around LCD
Check the circuit
around U304(EEPROM)
and data stored in it
Summary of Contents for SGH-N188
Page 2: ...Samsung Electronics Co Ltd Printed in Korea 09 2000 Rev 1 0 GH68 01480A ELECTRONICS ...
Page 12: ...Exploded Views and Parts List 1 9 1 11 Desk Top Charger DESK TOP CHARGER GH44 00163B ...
Page 13: ...PCB Diagrams 2 1 2 PCB Diagrams 2 1 Main Top ...