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I am very pleased with the service manual for my RT-909. This was an easy purchase and great procuct, and much cheaper than other venues i had looked at. This web site is now listed in my favorites list. KEEP UP THE GOOD WORK. THANKS. J. BROWN
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A very well written and easy to understand manual.
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There was no problem at all.After paying i had to wait only a few hours,than i could
download the manual in best pdf-quality.
Thank You !
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I found this service manual to be complete in every detail except for troubleshooting charts. It would be helpful if it had a set of troubleshooting charts; however it is a very good manual otherwise and for the price it is very well worth it.
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Complete manual included schematics layouts and alignment procedure, clear to read and magnify, extremely pleased with manual and owner manual . com's service
Block Diagrams 3-2
SYSTEM CLOCK
GSM/DCS VOCODER
3-2 Main Base Band
+3V SIM Card SIM Card Serial Data Interface +5V SIM Card I/O Interface
Memory
SYSTEM RAM 4M
B.B Interface A/D Interface
Battery Voltage
FLASH ROM 16M
Battery Temperature
GSM/DCS
EEPROM 128K
I/O BB Filter GSM/DCS RF interface GSM PLL PLL DCS PLL 3V Tx Multi Switch Array
KERNEL 5
8M ROM (Voice Recognition)
GSM Tx
DCS Tx Charging Circuit KeyPad POWER Circuit AVCC Graphic LCD (115*60) Li_lon Battery (3.6V) VCC RF PSU
GSM PSU
DCS PSU
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