Kenwood NXR-800H Service Manual

NXR-800H60Pin No. Name I/O Function25 K2 O Key Scan26 K3 O Key Scan27 K4 I Key Scan28 K5 I Key Scan29 DC8 I 8V Power supply30 GND - Ground31 50MPU I Switched 5V power supply32 50MPU I Switched 5V power supply33 DC8 I 8V Power supply34 DC8 I 8V Power supply35 GND - Ground36 DC8 I 8V Power supplyCN923 (To X45-386 E/5 CN905)1 VOLUME_IN I Volume control input for AF signal2 33MPU O Switched 3.3V power supply3 GND - Ground4 33AUD O Switched 3.3V power supply5 SB O Power supply output6 SCM_EN - No connection7 GND - Ground8 PTT_TXD_SCM I MIC PTT9 HOOK_RXD_SCM I HOOK detect signal10 MIG - MIC ground11 MIC I MIC signal inputTX Unit (X56-312X-XX) (C/3)Pin No. Name I/O FunctionCN960 (To X56-312 B/3 CN920)1 DC8 I 8V Power supply2 GND - Ground3 50MPU I Switched 5V power supply4 STB I Shift Register Strobe5 SR_OE I Shift Register Output Enable6 SR_CLK I Shift Register Clock7 SR_DATA I Shift Register Data8 LED1 I D960 segment “F” control9 GND - Ground10 LED10 I D961 segment “F” control管脚号名称输入 / 输出功能25 K2 输出键扫描26 K3 输出键扫描27 K4 输入键扫描28 K5 输入键扫描29 DC8 输入 8V 电源30 GND - 接地31 50MPU 输入开关 5V 电源32 50MPU 输入开关 5V 电源33 DC8 输入 8V 电源34 DC8 输入 8V 电源35 GND - 接地36 DC8 输入 8V 电源CN923( 至 X45-386 E/5 CN905)1 VOLUME_IN 输入 AF 信号的音量控制输入2 33MPU 输出开关 3.3V 电源3 GND - 接地4 33AUD 输出开关 3.3V 电源5 SB 输出电源输出6 SCM_EN - 未连接7 GND - 接地8 PTT_TXD_SCM 输入 MIC PTT9 HOOK_RXD_SCM 输入 HOOK 检测信号10 MIG - MIC 接地11 MIC 输入 MIC 信号输入TX 单元 (X56-312X-XX)(C/3)管脚号名称输入 / 输出功能CN960( 至 X56-312 B/3 CN920)1 DC8 输入 8V 电源2 GND - 接地3 50MPU 输入开关 5V 电源4 STB 输入移位寄存器选通脉冲5 SR_OE 输入移位寄存器输出启用6 SR_CLK 输入移位寄存器时钟7 SR_DATA 输入移位寄存器数据8 LED1 输入 D960 段“F”控制9 GND - 接地10 LED10 输入 D961 段“F”控制TERMINAL FUNCTION / 端子功能