Akai-ACL-701-Schematic电路图 维修手册.pdf

《Akai-ACL-701-Schematic电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《Akai-ACL-701-Schematic电路图 维修手册.pdf（6页珍藏版）》请在收音机爱好者资料库上搜索。

1、? ? ? ? RadioFans.CN 收音机爱 好者资料库 AKAI ACL-701 servicing map 1. No picture. No sound. Backlight not light. Power on to check Power supply audion B 1204 E pole +12V(Yes/No) Yes No Press Power to check C pole 12V output(Yes / No) Check fuse +12 V output (Yes / No) Yes No Yes No Check high voltage Surge

2、circuit and signal manage circuit Check IC 37160 29 footsie +5V (Yes/No) Check and change Power polarity diode and power on Check Power Jack, fuse and unit current more than 1.5 A Check 1204 front controll audion periphery parts Change fuse Check Power regularly(Yes/No) Check and change Power supply

3、 parts such as transformer and every POWER supply No No No Yes Yes Yes Check and change IC 37160 and IC 24C08 etc periphery parts ? ? ? RadioFans.CN 收音机爱 好者资料库 2 Backlight not light. Picture regular Check high voltage surge circuit Power supply pipe 1202 C pole 12V(Yes/ No) Yes No Check and change h

4、igh voltage surge audion AB2C184 high voltage bag etc Check high voltage Power supply pipe 1202 E pole +12V (Yes/ No) Yes No Check and Change IC5001 and correlative periphery parts Check and change 1? resistance RadioFans.CN 收音机爱 好者资料库 3. Whole light (No picture. No sound. Backlight regular) Yes Che

5、ck Power transformer HD-30534 commutate voltage output regular(+5V?+16V?-16V?+24V or 0.5V-0.7V NO 0.8V above No Yes Check Screen arrange 1 footsie +16V 12 footsie -16V 29,30,31,32 footsie +5V regular(Yes/No) Check Transformercommutae diode regular Check and change current Power 3518 Check 31585Foots

6、ie +12V regular (Yes/No) Checkmainboard 3 footsie complex inphase regular Checking Power supply parts Check and change commutate output loading Change parts Check and change 3518 and periphery parts Check and change Power supply current Resistance 10? Check 3Y26A 48 footsie complex insphase regular(

7、Yes/No) Check and change screen and arrange 16,20 screen scanning to control circuit parts Check and change 12101 Resistance Check 3Y26A 2 footsie complex inphase 4.8V(Yes/No) Check and change 3Y26A Check IC4011 13 footsie complex insphase regular(Yes/No) Check and change 13 footsie buck parts Check

8、 ICM61260 11 footse 5 footsie ,in phase signal output (Yes/ No) Check and change IC 4011 Check ICM61260 12,44 12V 3.4.39.40 footsie 5V(Yes/No) Check Power supply circuit Check and change ICM61260 Yes NoYes NoYes No No Yes Yes No Yes No Yes No Yes No 4. No sound, picture regular Using disturb way tou

9、ch ICLM386 3 footsie has souffle (Yes /No) Yes No Check ICLM386 6 footsie power supply regular(Yes/ No) Touch IC61260 51 footse souffle(Yes/No) Check IC61260 53 foots audio frequency signal input(Yes/No) Check and change resistance 12? Check speaker, Earphone jack regular ( Yes/No) Change parts Chec

10、k and change LM386 and periphery parts Check and change C1uf/50V?4.7? Change IC61260 Check and change output parts Check IC61260 4 foots +5V, 50 foots ,52 foots 3.4V regular(Yes/No) No Yes Yes No Check IC 61260 51 foots and correlative periphery Parts ,resistance 10K capacitance etc NoYes No Yes NoYes