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1. STH-N375 Trouble Shooting
1. Baseband Section
1-1. Program No Running
Press END
Key
Y
ON_SW=H
Y
VBAT>3.2V
Y
VCC=3.0V
V_VCTCXO=3.0V
RESET=3.0V
IVCC=2.2V
GBOOT_DI=H
Y
VCTCXO_IN=14.4 MHz
Y
Memory (U202)
control signal
OK?
Y
Program Running
N
N
Need to check
Q107, Q106
N
Need to check
U110, U111, U206
N
Need to check TCXO OSC302
& neighbor part
N
Need to replace
Memory(U202)
SAMSUNG Proprietary-Contents may change without notice
ON_SW=H
Need to check
Key Mat
VCC, ADD(0:21), DATA(0:15),
FLASH_CS, SRAM_CS, UBE,
1-1
N
Need to check
Battery
MEMOEB, MEMWEB
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