Pioneer BDP-120 Service Manual

Also see for BDP-121: Operating instructions Operating instructions System firmware update instructions

23BDP-1205 6 7 85 6 7 8ABCDEFNo video signal output from the MAIN PWB UnitIs video signal input into each terminal of SC5601?1) S-VIDEO and COMPOSIT OUTPUT TERMINALS2 pins (SUB_YOUT), 4 pins (SUB_COUT)2) CONPONENT-VIDEO TERMINAL6 pins (MAIN_YOUT), 8 pins (MAIN_PBOUT),10 pins (MAIN_PROUT)NOYESIs video signal input into the base of transistor for each buffer?1) S-VIDEO and COMPOSIT OUTPUT TERMINALSQ5604, Q56052) CONPONENT-VIDEO TERMINALQ5601, Q5602, Q5603Check SUB_PC_5V line.Check SC5601.YESNOCheck IC7201.FLOW CHART No.3No audio signal output from the MAIN PWB UnitIs audio signal input into terminal of each connector?1) 2ch analog audio connectionPins (12) (MAIN_L) and (14) (MAIN_R) of SC5606.YESNOIs there output from DAC?1) 2ch analog audio connectionCheck pins (9) and (10) of IC5606.Check the peripheral circuits of SC5602.Check the ANALOG PWB Unit.YESNOIs 5V supplied to pin (13) and -8V to pin (11) of IC5606respectively?Check the peripheral circuits of IC5602.NOReplace IC5606.YESYESIs any digital signal input into pins (1) - (4) of the IC5606?Check the peripheral circuits of IC7201.NOFLOW CHART No.4No video and audio signal output from HDMI terminal.Replace the TV set (cable) and reconfirm.Still no video and audio output?YES Defective TV set or cable. Or, check the contact of solderedconnector of SC4201.NOAre output voltages of IC4204 as 5V, IC4202 as 3.3V OK? Check the IC4204 and IC4202 or peripheral circuits.NOYESIs the data line functioning (Hi/Low)?Check IC7802, IC7803, IC7804, IC7805, IC8502, IC8505 andtheir peripheral circuits.Replace IC7201.Or rewrite the main software.NOYESFLOW CHART No.5www . xiaoyu163. comQQ 376315150 992894298TEL 13942296513 992894298051513673QQTEL 13942296513 QQ 376315150 892498299TEL 13942296513 QQ 376315150 892498299http://www.xiaoyu163.comhttp://www.xiaoyu163.com