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Samsung Electronics - Contents may change without notice.
6-2
Troubleshooting
6-1-2 Abnormal Initial Operation (3.3V voltage source)
Y
N
Y
N
Y
N
Y
N
Y
N
Press PWR button.
TCXO CLK
applied to U401 pin 26?
TCXO/4 CLK signal output
from U401 pin 29?
RAM-CS signal output
from U127 pin 30?
CHIPX8 CLK signal output
from U401 pin 52?
LED on?
Check the LED and its neighboring
circuits. Replace if required.
Y
N
Normal initial
display on LCD?
Check the LCD pins and its neighboring
circuits. Replace if required.
Check 'H' level input from
U101 pin59 and U401 pin79.
Check MEM board, J103, and U101 pins
93-96, 98-105, 107-117, 119-126,
and 128-132. Replace if required.
Check U401 and its neighboring
circuits. Replace if required.
Check TCXO output, R401, and C401.
Replace if required.
END
Summary of Contents for SCH-211
Page 2: ...Samsung Electronics Co Ltd GH68 00335A ELECTRONICS ...
Page 3: ...Samsung Electronics Contents may change without notice 1 Specification ...
Page 5: ...Samsung Electronics Contents may change without notice 1 2 General Introduction MEMO ...
Page 11: ...Samsung Electronics Contents may change without notice 2 6 Specification MEMO ...
Page 17: ...Samsung Electronics Contents may change without notice 3 6 Installation MEMO ...
Page 47: ...Samsung Electronics Contents may change without notice 6 10 Troubleshooting MEMO ...
Page 65: ...Samsung Electronics Contents may change without notice 8 4 PCB Diagrams Bottom View ...
Page 93: ...Samsung Electronics Contents may change without notice 9 24 Electrical Parts List MEMO ...
Page 113: ...Samsung Electronics Contents may change without notice 10 20 Block Circuit Diagrams MEMO ...