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External DC 13.2V Power Source applied to the NXR-700H Terminal / 将外部 DC 13.2V 电源施加于 NXR-700H 端子
■
Refer to the power supply diagram sequence below. / 请参见以下电源图顺序。
+B
DC/DC converter
(IC10, Q2)
DC/DC converter
(IC11, Q3)
■
Initialization of the Modem control MPU (IC325) (normal oscillation of X301 and normal reset-unlock of IC303)
调制解调器控制 MPU(IC325)(X301 的正常振荡和 IC303 的复位解锁 ) 的初始化
■
Refer to Traceability procedure for IC325. / 请参见 IC325 的追溯步骤。
■
Unlocking "SYS_RST" Signal on the Modem control MPU (IC325) starts Up all Hardware Blocks
解锁调制解调器控制 MPU(IC325) 上的"SYS_RST"信号时，将启动所有的硬件区块
■
Refer to the Reset circuit below. / 请参见以下复位电路。
33MPU
IC303
33MPU
TROUBLE SHOOTING /
DC8
5V_AVR (IC16)
Switched by
Modem Control
MPU (IC325)
DC50
3.3V_AVR (IC329)
Switched by
Modem Control
MPU (IC325)
3.3V_AVR (IC15)
3.3V_AVR (IC6)
33SH
D16C_RST
33SH
33SH
IC703
Main MPU
33SH
IC708
33MPU
SYS_RST
IC325
33MPU
Modem
Control
MPU
33MPU
IC314
RESET_D
33MPU
33MPU
IC324
IC323
TX
Vocoder
DSP
DSP
DSP_RST
Reset circuit / 复位电路
故障排除
50MPU
33SH
18DSP
1.8V_AVR (IC18)
33BU
Switch (Q302)
Rechargeable battery (BA300)
15SH
1.5V_AVR (IC306)
33MPU
Modem Control MPU (IC325)
15DSP
1.5V_AVR (IC307)
33AUD
33BU
33SH
IC700
SRAM
50MPU
from RTE
50MPU
WP
33SH
50MPU
WP
IC17
RX
NXR-700H
Audio AMP (IC29)
LED, Option
RF_Control_MPU I/O (IC34)
LAN_IC (IC719)
RF_Control_MPU I/O (IC34)
DSP_I/O (IC37)
DSP_Core (IC37)
SRAM (IC700), RTC (IC701)
Main MPU I/O (IC703)
Main MPU_Core (IC703)
TX_Vocoder/RX_DSP_I/O
(IC323/324)
TX_Vocoder/RX_DSP_Core
(IC323/324)
Audio_circuit
33SH
33SH
IC719
IC702
LAN
Flash
50MPU
33SH
IC34
RF Control MPU
50MPU
IC35
50MPU
33SH
EEPROM
IC37
each
DSP
RF unit
105
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