Take Fanuc robot as an example: 1 can not be turned on to check and repair: check 1: kzq circuit breaker is on and does not trip maintenance: close circuit breaker to check 2: check whether the LED indicator (GREEN) on the power board (PSU) is on. Maintenance: If the LED indicator is not on, it may be that the 200V power supply of PSU is not available or the F1 fuse on PSU is damaged: 1 If the 200V power supply is not available, please check the power supply line. 2 If the 200V power supply has been provided to PSU, please cut off the power supply: A F1 fuse is damaged please refer to maintenance 2 B F1 fuse is not damaged please replace the PSU Maintenance 2: Failure causes of fuse damage and countermeasures A Check whether CP2 and CP3 connectors between the PSU and other circuit boards are in good contact. B If surge absorption VS1 short circuit please replace VS1 Order No. : A50L-2001-0122#G431K C two j tube DB1 Short circuit D Backup power module H1 damaged If B or C is faulty please replace the corresponding spare parts... Check 3: Check EXON1, EXON2, EXOFF1, EXOFF2 signal wiring maintenance on the panel board: if no external switch function is used, please short connect signals EXON1 and EXON2, EXOFF1 and EXOFF2; If the external on-off function is used, check the connecting cable. Check 4: The JRS11 cable on the panel board is in good contact. Check 5: Check 1, 2, and 3 above to ensure that the 200V power supply ON CP1 is properly connected and the ON/OFF switch of the machine is normal. Check the PSU as follows: If the LED (ALM: red) on the PSU is on, check whether the external +24V is grounded or connected to 0V. A F4 fuse is destroyed B Replace the PSU F4 fuse Order No. :... 2. Use the LED indicator of the control BOARD to diagnose and rectify the fault 2.1 MAIN BOARD Step 1 After the startup of the MAIN board, all leds light up.1 Replace the CPU card. 2 Replace the MAIN board BOARD Step 3 Complete DRAM initialization and maintenance when the robot system starts. 1 Replace the CPU card. 2 Replace the MAIN BOARD. Step 4 Complete DRAM and SRAM initialization and maintenance when the robot system starts BOARD 3 Replace the FROM/SRAM card Step 5 Communication IC initialization is completed when the robot system starts. 1 Replace the MAIN BOARD. 2 Replace the FROM/SRAM card BOARD BOARD 2 Replace the FROM/SRAM card Step 7 Repair the MAIN BOARD when the robot starts the basic software 1 Replace the MAIN BOARD board 2 Replace the FROM/SRAM card. Step 8 Repair the main board board when the robot kzq communicates with the TP teacher 1 Replace the main board board 2 Replace the FROM/SRAM card Step 9 Replace the MAIN BOARD when the robot loads the option software. 2 Replace the process I/O BOARD. Step 10 Replace the MAIN BOARD when initializing DI/DO. 1 Replace the FROM/SRAM card When replacing the MAIN BOARD and FROM/SRAM cards, the user programs and system Settings stored in the machine will be lost. Make sure to make a backup before replacing the MAIN BOARD and FROM/SRAM cards. In addition, you should also make a backup before installing the robot system software. Step 11 Repair the SRAM. 1 Replace the shaft control card. 2 Replace the MAIN BOARD. 3 Replace the servo amplifier. Step 12 Initialize the shaft control card Repair 1 Replace the shaft control card 2 Replace the MAIN BOARD 3 Replace the servo amplifier Step 14 Repair the power supply of the robot servo system 1 Replace the MAIN BOARD Step 15 Repair 1 Replace the MAIN BOARD when running the program 2 Replace the process I/O BOARD Step 16 Repair the MAIN BOARD when performing I/O operations 1 Replace the MAIN board. Step 17 The initialization is complete. The maintenance is normal The user programs and system Settings stored in the machine will be lost when the BOARD and FROM/SRAM cards are used. Make sure to make a backup before replacing the MAIN BOARD and FROM/SRAM cards. In addition, you should also make a backup before installing the robot system software. 7 digits Fault Description and countermeasures Fault: The RAM parity check fails on the CPU card Measure 1: Replacing the CPU card Measure 2: Replacing the MAIN BOARD Fault: The RAM parity check fails on the FROM/SRAM card Measure 1: Replace the FROM/SRAM card Measure 2: Replace the MAIN BOARD Fault Description and countermeasures Fault: Communication between kzq and PANEL BOARD Fault Measure 1: Check the cable connecting the MAIN BOARD and PANEL BOARD, if damaged, replace the communication cable Measure 2: Replace the MAIN BOARD Measure 3: replace the PANEL BOARD 7 sections of code digital fault description and countermeasures Fault: servo bj Measure 1: replace the servo control card Measure 2: replace the MAIN BOARD 7 sections of code digital fault description and countermeasures Fault: The system stops abruptly bj Measure 1: Replace the servo control card Measure 2: replace the CPU card Measure 3: Replace the MAIN BOARD with seven digits Fault Description and countermeasures Fault: system error Measure 1: Replace the servo control card Measure 2: replace the CPU card Measure 3: Replacing the MAIN BOARD When replacing the MAIN BOARD and FROM/SRAM cards, the user programs and system Settings stored in the machine will be lost. Before replacing the MAIN BOARD and FROM/SRAM cards, make sure to make a backup. In addition, you should also make a backup before installing the robot system software. 2.2 PSU LED indication Fault Description and Countermeasures Fault: ALM LED (red) on PSUbj Measure 1: Check F4 (+24V) fuse on PSU, if damaged, replace Measure 2: Check the +5V, +15V, +24V voltage on the PSU and the related cables and equipment connected therewith. If damaged, replace the measure 3: Replace the PSU Fault: PIL LED (Green) is not bright, the 200V power supply of the PSU is not on Measure 1: Check the F1 fuse on the PSU, if damaged, replace the measure 2: Replace the PSU 2.3 LED indicator on the PANEL BOARD RDY: Fault: The LED (GREEN) is not on, which means that the communication between the PANEL BOARD and the MAIN BOARD is interrupted. Check the communication cable between the MAIN BOARD and the PANEL BOARD. If it is damaged, replace it. Measure 2: Replace the MAIN BOARD. The LED is not bright, that is, the +24V voltage to +5V voltage failure on the PANEL BOARD Measure 1: check the CRM63 connector, +24V input power measure 2: Procedure Replace the LED indicator on the PANEL BOARD 2.4 Process I/O CA/CB/DA: Fault: The communication between the MAIN BOARD and the PROCESS I/O is incorrect. Measure 1: Replace the I/O board Measure 2: Process I/O CA/CB/DA: Fault: The fuse of the I/O BOARD is damaged Measure 1: Replace the fuse Measure 2: Check the peripheral cable Measure 3: Replace the LED indicator on the I/O board 2.5 servo amplifier

以發(fā)那科機器人為例： 

1 無(wú)法開(kāi)機 檢查及維修：

 檢查1：kzq斷路器開(kāi)且沒(méi)有跳閘 維修： 合上斷路器 檢查 2：查看電源板（PSU）上的LED指示燈（GREEN）是否亮。 維修： 

如果 LED指示燈沒(méi)亮可能是PSU的200V供電電源沒(méi)有或PSU上的F1保險絲毀壞： 1如果200V電源沒(méi)有請檢查供電線(xiàn)路 

2 如果200V電源已提供給PSU請切斷電源： A F1保險絲毀壞請參照維修2 B F1保險絲沒(méi)有毀壞請更換PSU 

維修2：保險絲毀壞故障原因及應對措施 A 查看PSU與其他電路板間的CP2、CP3連接件是否接觸良好。 

B 如果浪涌吸收VS1短路請更換VS1定貨號：A50L-2001-0122#G431K C 二j管DB1短路 D 后備電源模塊H1毀壞 

如果B或C有故障請更換相應備件 … 檢查3：查看panel board板上的EXON1、EXON2，EXOFF1、EXOFF2信號接線(xiàn) 維修： 

如果沒(méi)有使用外部開(kāi)關(guān)機功能請短接信號EXON1與EXON2，EXOFF1與EXOFF2；如果使用了外部開(kāi)關(guān)機功能請查看連接電纜。 

檢查 4：panel board板上的JRS11的連接電纜是否接觸良好。 檢查 5：查看上面的1、2、3確定CP1上的200V電源已接好且機器ON/OFF開(kāi)關(guān)正常請按以下步驟檢查PSU： 

如果PSU上的LED (ALM: red)亮請查看外部+24V是否被接地或接0V。 A F4保險絲毀壞 B 更換PSU F4保險絲定貨號： … 

2、利用控制板LED指示燈診斷排除故障 2.1 MAIN BOARD 步驟 1 開(kāi)機后所有的LED都亮 維修 1 更換CPU卡 2 

更換MAIN BOARD板 步驟 2 機器人系統軟件啟動(dòng)時(shí) 維修 1 更換CPU卡 2 更換MAIN BOARD板 步

驟 3 機器人系統啟動(dòng)時(shí)CPU卡 DRAM初始化完成 維修 1 更換CPU卡 2 更換MAIN BOARD板 

步驟 4 機器人系統啟動(dòng)時(shí)DRAM、SRAM初始化完成 維修 1 更換CPU卡 2 更換MAIN BOARD板 

3 更換FROM/SRAM卡 步驟 5 機器人系統啟動(dòng)時(shí)通信IC初始化完成 維修 1 更換MAIN BOARD板 

2 更換FROM/SRAM卡 步驟 6 機器人系統啟動(dòng)時(shí)基本軟件載入完成 維修 1 更換MAIN BOARD板 

2 更換FROM/SRAM卡 步驟 7 機器人開(kāi)機啟動(dòng)基本軟件時(shí) 維修 1 更換MAIN BOARD板 2 更換FROM/SRAM卡 

步驟 8 機器人kzq與TP示教器通信時(shí) 維修 1 更換MAIN BOARD板 2 更換FROM/SRAM卡 步驟 9 機器人載入選項軟件時(shí) 維修

 1 更換MAIN BOARD板 2 更換process I/O 板 步驟 10 初始化DI/DO時(shí) 維修 1 更換FROM/SRAM卡 2 更換MAIN BOARD板 

更換MAIN BOARD和FROM/SRAM卡時(shí)機器中存儲的用戶(hù)程序及系統設置都會(huì )丟失，在更換MAIN BOARD和FROM/SRAM卡前一定要作好備份；

另外在安裝機器人系統軟件前也要作好備份。 步驟 11 SRAM準備完成 維修 1 更換軸控制卡 2 更換MAIN BOARD板 3 更換伺服放大器 

步驟 12 軸控制卡初始化完成 維修 1 更換軸控制卡 2 更換MAIN BOARD板 3 更換伺服放大器 步驟 13 校對完成 維修 1 更換軸控制卡 

2 更換MAIN BOARD板 3 更換伺服放大器 步驟 14 機器人伺服系統得電 維修 1 更換MAIN BOARD板 步驟 15 執行程序時(shí) 維修

 1 更換MAIN BOARD板 2 更換process I/O 板 步驟 16 執行I/O操作時(shí) 維修 1 更換MAIN BOARD板 步驟 17 初始化完成 維修 初始化正常結束

 步驟 18 機器人正常 維修 機器人正常時(shí)LED1、LED2會(huì )不停閃爍 更換MAIN BOARD和FROM/SRAM卡時(shí)機器中存儲的用戶(hù)程序及系統設置都會(huì )丟失，

在更換MAIN BOARD和FROM/SRAM卡前一定要作好備份；另外在安裝機器人系統軟件前也要作好備份。 7段碼數字 故障描述及應對措施 

故障：CPU卡上的RAM奇偶校驗出錯 措施1：更換CPU卡 措施2：更換MAIN BOARD板 故障描述及應對措施 故障：FROM/SRAM卡上的RAM奇偶校驗出錯 

措施1：更換FROM/SRAM卡 措施2：更換MAIN BOARD板 故障描述及應對措施 故障：kzq與PANEL BOARD板間通信出錯 

措施1：查看MAIN BOARD與PANEL BOARD間連接電纜，如損壞就更換該通信電纜 措施2：更換MAIN BOARD板 措施3：

更換PANEL BOARD 7段碼數字 故障描述及應對措施 故障：伺服bj 措施1：更換伺服控制卡 措施2：更換MAIN BOARD板

 7段碼數字 故障描述及應對措施 故障：系統緊急停止bj 措施1：更換伺服控制卡 措施2：更換CPU卡 措施3：更換MAIN BOARD板 7段碼數字 

故障描述及應對措施 故障：系統出錯 措施1：更換伺服控制卡 措施2：更換CPU卡 措施3：更換MAIN BOARD板

 更換MAIN BOARD和FROM/SRAM卡時(shí)機器中存儲的用戶(hù)程序及系統設置都會(huì )丟失，在更換MAIN BOARD和FROM/SRAM卡前一定要作好備份；

另外在安裝機器人系統軟件前也要作好備份。 2.2 PSU LED指示 故障描述及應對措施 故障：ALM LED (red)亮PSUbj 

措施1：查看PSU上的F4（+24V）保險絲，毀壞則更換 措施2：檢查PSU上的+5V、+15V、+24V電壓和與其連接的相關(guān)電纜、設備，

如有毀壞則更換 措施3：更換PSU 故障：PIL LED (Green)不亮，PSU的200V電源沒(méi)有 措施1：檢查PSU上的F1保險絲，毀壞則更換 

措施2：更換PSU 2.3 PANEL BOARD板上LED指示 RDY： 故障：該LED（GREEN）不亮即PANEL BOARD板與MAIN BOARD板間通信中斷 

措施1：檢查MAIN BOARD板與PANEL BOARD板間的通信電纜，毀壞則更換 措施2：更換MAIN BOARD板 措施3：

更換PANEL BOARD板 PON： 故障：該LED不亮即PANEL BOARD板上+24V電壓轉+5V電壓失敗 

措施1：檢查CRM63接頭，+24V輸入電源 措施2：更換PANEL BOARD 2.4 PROCESS I/O板上的LED指示 Process I/O CA/CB/DA：

 故障：MAIN BOARD與PROCESS I/O板間通信錯誤 措施1：更換I/O板 措施2：更換MAIN BOARD 措施3：

更換I/O通信電纜 Process I/O CA/CB/DA： 故障：I/O板保險絲毀壞 措施1：更換保險絲 措施2：檢查外設電纜

措施3：更換I/O板 2.5 伺服放大器上LED指示