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Very good detail, all pages clear, exactly what I needed
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Excellent service, and just what I needed to service my TU-7700. All pages of the manual are clear and easily readable.
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Excellent printing quality.
A complete and very usefull service manual with all details.
GREAT SERVICE AT VERY LOW PRICE!
A+++++++++++++++++++++++++
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We received the manual in a timely manner and it was exactly what we were expecting. Excellent replacement for original Service Manual.
All schematics are very legible. We are really satisfied.
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We received the manual in a timely manner and it was exactly what we were expecting. Excellent replacement for original Service Manual.
All schematics are very legible. We are really satisfied.
3-2
SIM Card CLOCK Serial Data GSM/DCS Interface
VOCODER
SYSTEM +3V SIM Card
Memory +5V SIM Card
I/O Interface B.B Interface Battery Voltage A/D Interface
3-2 Main Base Band
SYSTEM RAM 4M
FLASH Battery Temperature ROM 16M I/O BB Filter GSM/DCS GSM/DCS PLL GSM PLL
EEPROM 128K RF interface
KERNEL 5
DCS PLL 3V Tx Multi GSM Tx Recognition) DCS Tx
8M ROM (Voice Switch Array
Charging Circuit
RF PSU
GSM PSU KeyPad POWER Circuit DCS PSU AVCC
Graphic LCD Li_lon Battery (3.6V) (115*60) VCC
Block Diagrams
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