3. How to Check for Trouble 4. Test Mode Procedure 5. Electrical Components List 6. Layout of Components 7. Perspective View and Components List 8. Block Diagram 9. Circuit Diagram � Samsung Electronics Co., Ltd. 11. 2003 � Printed in Korea...
Management Guideline for Service Manual SP-C501R This service manual contains important technical data on Samsung's products, so it may not be reproduced or distributed without our prior written consent. Please be careful to keep it safe from getting lost and stolen.
Do not adjust the adjusting parts of each end, unless a part of itself is not modified. If you use the unauthorized adjusting tool when adjusting the RF Module used for this mobile phone, the CORE of MODULE may be damaged, so only use the authorized adjusting tool. Samsung Electronics Co., Ltd -2- Service Manual Samsung Electronics Co., Ltd...
1. Check if speech IC (U500) pin No. 12 is high when is there a ringing Is dialing available? entered in the pin (U1 No. 30). dialing. sound in the remote set? Diagnosis completion Samsung Electronics Co., Ltd -4- Service Manual Samsung Electronics Co., Ltd -5- Service Manual...
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1. Then check the receiving unit, MODEM(U2) and the Is the remote available sound? AMP circuit(U3). for receiving? Diagnosis completion Diagnosis completion Samsung Electronics Co., Ltd -6- Service Manual Samsung Electronics Co., Ltd -7- Service Manual...
"Test Mode" TP: Short four times 2. Defective contact terminal Check the contact terminal Returns to the first step Power OFF: Exit from the Test Mode Samsung Electronics Co., Ltd -8- Service Manual Samsung Electronics Co., Ltd -9- Service Manual...
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1. Same as RX Audio SINAD in measuring condition. 20dB Carrier "L H"=118dBm 2. Check if complete H/L is done within the range of Sensitivity "H L"=108dBm RF Level 01-114 4dBm. Samsung Electronics Co., Ltd -10- Service Manual Samsung Electronics Co., Ltd -11- Service Manual...
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"L H"=118dBm the RX Audio SINAD. 20dB (C/S) "H L"=110dBm 2. Check if complete H/L is done within the range of RF Level - 114 4dBm. Samsung Electronics Co., Ltd -12- Service Manual Samsung Electronics Co., Ltd -13- Service Manual...
Block Diagram Chapter 8. SP-C501R SP-C501R 8.1 RF BLOCK DIAGRAM 8.2 BASE SET BLOCK DIAGRAM Samsung Electronics Co., Ltd -32- Service Manual Samsung Electronics Co., Ltd -33- Service Manual...
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For example, if the current channel is not being used, or the user does not attempt to call, in other words, if 20/30dB is 'HIGH', the same process keeps repeating by transmitting the data of the next channel to a frequency synthesizing section. Samsung Electronics Co., Ltd -34- Service Manual Samsung Electronics Co., Ltd...
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For the demodulation, when the signal received through the RF Module is inputted to the AK2361, it is outputted to the MPU through the MSK Demodulator, and the MPU performs the corresponding command by analyzing the inputted "I and O" signals. Samsung Electronics Co., Ltd -36- Service Manual Samsung Electronics Co., Ltd...
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The signal passing through the RX AFSW is transmitted to the SPK Unit through the buffers, AMP3 (3) Power Amplification (Q202, Q203:2SC4784) and AMP4, of AK2361E at this time. Samsung Electronics Co., Ltd -38- Service Manual Samsung Electronics Co., Ltd -39-...