Kenwood TK-5810 Service Manual

Also see for FleetSync TK-5810(H): Instruction manual Specifications Service manual Instruction manual

TK-5810 (BG) /5810H (BG)55TROUBLE SHOOTING● Checking the signal output fromthe ASIC by software controlPoints to be checked Normal voltageSBC R822 3.3VWhen an abnormalvalue is confirmed.When a normalvalue is confirmed.When a normalvalue is confirmed.● Panel control (Control unit)Points to be checked Normal voltageSB D506 13.2VPoints to be checked Normal voltage/DRST TP992 3.3VChecking voltagePoints to be checked Normal voltageVCC IC1 (2 pin) 5.0VIf the SBC is 3.3V and SB Q3 (pin 2) side is 13.2V ormore, the BGA parts are not broken.If the /DRST is 0V, the ASIC/FLASH/SRAM are broken.Remove R822. If the ASIC side is 0V,the ASIC/FLASH/SRAM may be broken.Points to be checked Normal voltage/PRST Q203 (Gate) 3.3V● Panel control (KCH-14 or 15)Remove Q203. If the ASIC side is 0V,the ASIC/FLASH/SRAM may be broken.When a normalvalue is confirmed.When a normalvalue is confirmed.When a normalvalue is confirmed.When a normalvalue is confirmed.Checking the clock/resetPoints to be checked Normal voltageXout R25 14.7456MHz (5.0V)/PRST L2 5.0VWhen a normalvalue is confirmed.Checking the Control signalPoints to be checked Normal voltageDISP C40 (Signal side) 0VCE R47 (Signal side) 5.0V−0V−5.0VWhen a normalvalue is confirmed.It is unlikely that the BGA parts are broken.When an abnormalvalue is confirmed.When an abnormalvalue is confirmed.The BGA parts are not broken.IC1 may be broken.When an abnormalvalue is confirmed.When an abnormalvalue is confirmed.When an abnormalvalue is confirmed.If nothing is displayed even after replacing theKCH-14 or 15, the BGA may be broken.The panel microcomputer receives a request of LCDdisplay from the ASIC. Then, the LCD displays.The DISP and CE signal become abnormal ifcommunication is disabled due to a trouble inthe ASIC.When an abnormalvalue is confirmed.● When an error display appears on the LCD.The LCD displays “INIT ERROR1”. An error occurs when the ASIC internal RAM readsor writes. The ASIC may be broken.The LCD displays “INIT ERROR2”. An error occurs when the DSP internal RAM readsor writes. The DSP may be broken.The LCD displays “INIT ERROR3”. An error occurs when the SRAM internal RAMreads or writes. The SRAM may be broken.Replacing Control Unit■ Control unit InformationModel Name Original Controlunit NumberFor Service Controlunit NumberTK-5810(BG) K,K2TK-5810H(BG) K,K2 X53-4400-10 X53-4400-11