The Samsung SCH-A302 service manual lists specifications for the CDMA cellular phone, including TX and RX frequency ranges, channel bandwidth and spacing, duplex separation, intermediate frequencies, operating temperature, supply voltage, and size/weight options. Its contents include specification, troubleshooting, tune-up procedure and test procedure list, frequency synthesizer circuit and spurious radiation suppression circuit, NAM programming, electrical parts list, exploded views and parts list, block diagram, PCB diagrams, and circuit description and circuit diagrams.
The troubleshooting section covers no power, abnormal initial operation, abnormal backlight operation, and abnormal key data input. Later pages contain RF circuit diagrams, and the specification pages state a +3.8 V supply and an operating temperature of -30 °C to +60 °C.
| TX Frequency Range | 824 ~ 849 MHz |
|---|---|
| RX Frequency Range | 869 ~ 894 MHz |
| Channel Bandwidth | 1.23 MHz |
| Channel Spacing | 30 kHz |
| Duplex Separation | 45 MHz |
| Number of Channels | 20 FA |
| Supply Voltage | +3.8V |
| Operating Temperature | -30 °C ~ +60 °C |
| Size and Weight (SMALL) | 81 x 42 x 21 mm, 84 g |
The TX frequency range is 824 ~ 849 MHz.
The channel spacing is 30 kHz.
The specified supply voltage is +3.8V.
The manual has a section titled NAM Programming.