8-2 Samsung Electronics
Troubleshooting
8-1-2 Abnormal initial operation (3.3V voltage source)
Y
N
Y
N
Y
N
Y
N
Y
N
Press PWR Key
TCXO CLK
applied to U600 pin 26?
TCXO/4 CLK signal outputted
from U600 pin 29?
RAM-CS signal outputted
from U100 pin 92?
CHIP X 8 CLK
signal outputted from
U600 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
U200 pin59, U600 pin79.
Check MSM board,
U100 pins 93-96,
98-105, 107-117, 119-126, and
128-132. Replace if required.
Check U600 and its neighboring
circuits. Replace if required.
Check VCTCXO output, C600
Replace if required.
END
Summary of Contents for SCH-1500 series
Page 2: ...Samsung Electronics Co Ltd ELECTRONICS ...
Page 4: ...1 2 Samsung Electronics General Introduction Memo ...
Page 22: ...4 8 Samsung Electronics NAM Programming Memo ...
Page 46: ...Memo 7 4 Samsung Electronics Test Procedure ...
Page 81: ...10 1 DBDM Phone 10 1 1 Main Board PCB REV 2 1 10 PCB Diagrams Top View Bottom View ...
Page 82: ...10 1 2 Memory Board PCB REV 2 0 ...
Page 83: ...10 2 Desk Top Rapid Charger Board PCB ...
Page 84: ...10 3 Travel Charger Board PCB ...
Page 85: ...10 4 Cigarette Lighter Adaptor Board PCB ...
Page 86: ...10 5 Hands Free Kit Board PCB ...
Page 87: ...10 6 Cradle PCB ...
Page 88: ...Memo ...
Page 116: ...12 1 Main Block Diagram ...
Page 117: ...12 2 Desk Top Rapid Charger Block Diagram ...
Page 118: ...12 3 Travel Charger Block Diagram ...
Page 119: ...12 4 Cigarette Lighter Adaptor Block Diagram ...
Page 120: ...12 5 Hands Free Kit Block Diagram ...
Page 121: ...12 6 Logic Circuit Diagram REV 2 1 ...
Page 122: ......
Page 123: ...12 7 Memory Board Circuit Diagram REV 2 0 ...
Page 124: ...12 8 RF Circuit Diagram REV 2 1 ...
Page 125: ...12 9 Desk Top Rapid Charger Circuit Diagram ...
Page 126: ...12 10 Travel Charger Circuit Diagram ...
Page 127: ...12 11 Cigarette Lighter Adaptor Circuit Diagram ...
Page 128: ...12 12 Hands Free Circuit Diagram 12 12 1 Power Supply ...
Page 129: ...12 12 2 Audio Amp ...
Page 130: ...12 12 3 Comm Cont ...
Page 131: ...12 13 Cradle Circuit Diagram ...
Page 132: ...Memo ...