Panasonic-SAAK340P-cs-sup2 电路图 维修手册.pdf

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1、 2006 Matsushita Electric Industrial Co. Ltd. All rightsreserved.Unauthorizedcopyingand distribution is a violation of law. SA-AK340P SA-AK340PC SA-AK340PL SA-AK340E SA-AK340EB SA-AK340EG SA-AK340EE Colour (S). Silver Type CD Stereo System Subject : Additional Contents (F61 troubleshooting) Please u

2、se this manual together with the service manual for Model No. SA-AK340P/PC-S, Order No. MD0510381C1,SA-AK340PL-S,OrderNo.MD0512469C3,SA-AK340E/EB/EG-S,OrderNo. MD0512471C2 & SA-AK340EE-S, Order No. MD0512483C3. ORDER NO. MD0609327SE A6 RadioFans.CN 收音机爱 好者资料库 1 Background This technical document ill

3、ustrates the checking procedures when upon detecting the error code of “F61” after power up. This is to troubleshoot the Power P.C.B. upon detecting the error code. 1.1. Troubleshooting Guide The table below shows the symptoms and checking items for troubleshooting the error code. SymptomChecking It

4、emsRepair ItemsRemarks FL display blinking with abnormal segment when power ON the set or F61 Check the solderbility condition of the Power P.C.B. Is there any solder crack at transistor area? (Q5101, Q5102, Q5111 & Q5112) Touch-up the solder crack area.Refer to Fig 2. First power ON display immedia

5、te show “F61”. Check all the supply line +/- VCC if more than +/- 29V, check clamper circuit components especially Q5110, R5114 & D5102. Check 15V, MOT12V, CD8V, SW5V supply line. Change the defective parts. Q5110 = B1GACFGA0002 R5114 = ERJ3GEYJ1R8V D5102 = B0BA02600018 Refer to Fig 1. Check speaker

6、 output by using multimeter If there is a DC voltage around +/- 29V, check on the pcb, +/- VCC point with every channel output of D-Amp IC, if shorted, that means D-Amp damage already. Change the defective D-Amp IC. point 1 or 2 short to +/- VCC = change IC5301 point 3 or 4 short to +/- VCC = change

7、 IC5401 point 5 or 6 short to +/- VCC = change IC5501 IC part no.:C1AA00000755. +VCC = C5101 (+ve leg) - VCC = C5104 (-ve leg) Power ON for a while then only trigger F61. (Symptom always happen) Check the fan connection to the Main P.C.B. If the fan not proper connected, F61 will trigger when the vo

8、lume increase. Re-connect the fan to CN2810.Refer to Fig 1. Check +/- VCC supply balance The +/- VCC supply should be balance. + VCC = +29V and - VCC = - 29V. If the supply is balance, try to reduce the AC supply by 10%. If the symptom does not appear, that means the DC Det line mis-trigger the F61.

9、 It is due to the resistor tolerance and the DC Det circuit setting is too sensitive to trigger F61. Countermeasure: Change R5112 & R5113 value as below: ForAK340changeto390k(PartNo. ERJ3GEYJ394V) 1.2. Location of replacement parts This section includes the location of the parts for changes of impro

10、vement. 2 SA-AK340P / SA-AK340PC / SA-AK340PL / SA-AK340E / SA-AK340EB / SA-AK340EG / SA-AK340EE RadioFans.CN 收音机爱 好者资料库 1.2.1. Location of Resistors (R5112, R5113 & R5114), Transistors (Q5110, Q5111 & Q5112) & Diode (D5102) Fig. 1 3 SA-AK340P / SA-AK340PC / SA-AK340PL / SA-AK340E / SA-AK340EB / SA-

11、AK340EG / SA-AK340EE RadioFans.CN 收音机爱 好者资料库 Fig. 2 Note: Refer to Power P.C.B. diagram (page 78) for SA-AK340P/PC-S & SA-AK340EE-S. Refer to Power P.C.B. diagram (page 80) for SA-AK340E/EB/EG-S & SA-AK340PL-S. 4 SA-AK340P / SA-AK340PC / SA-AK340PL / SA-AK340E / SA-AK340EB / SA-AK340EG / SA-AK340EE M0609 S/N