SA-AK640P, SA-AK640PC, SA-AK640PL, SA-AK640E, SA-AK640EB, SA-AK640EG, SA-AK640EE - Panasonic Audio Service Manual Supplement (repair manual)

sa-ak640p, sa-ak640pc, sa-ak640pl, sa-ak640e, sa-ak640eb, sa-ak640eg, sa-ak640ee service manual supplement
Model
SA-AK640P SA-AK640PC SA-AK640PL SA-AK640E SA-AK640EB SA-AK640EG SA-AK640EE
Pages
4 Few pages! See other manuals at the bottom of the first or last page.
Size
585.07 KB
Type
PDF
Document
Service Manual Supplement
Brand
Device
Audio / CD STEREO SYSTEM
File
sa-ak640p-sa-ak640pc-sa-ak640pl-sa-ak640e-sa-ak640.pdf
Date

Read Panasonic SA-AK640P / SA-AK640PC / SA-AK640PL / SA-AK640E / SA-AK640EB / SA-AK640EG / SA-AK640EE Service Manual Supplement online

SA-AK640P
SA-AK640PC
SA-AK640PL
SA-AK640E
SA-AK640EB
SA-AK640EG
SA-AK640EE
Colour
(S)... Silver Type
CD Stereo System
Subject :  Additional Contents (F61 troubleshooting)
Please use this manual together with the service manual for Model No. [SA-AK640P/PC-S, Order No.
MD0512479C1],
[SA-AK640PL-S,
Order
No.
MD0601011C3],
[SA-AK640E/EB/EG-S,
Order
No.
MD0601012C2] & [SA-AK640EE-S, Order No. MD0602049C3].
ORDER NO. MD0609329SE
A6
1 Background
This technical document illustrates 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.
Symptom
Checking Items
Repair Items
Remarks
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
immediate 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 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 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
volume 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.
 • 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:
 − For AK640 change to 270kΩ (Part No.
D0GB274JA007)
1.2. Location of replacement parts
This section includes the location of the parts for changes of improvement.
2
SA-AK640P / SA-AK640PC / SA-AK640PL / SA-AK640E / SA-AK640EB / SA-AK640EG / SA-AK640EE
1.2.1. Location of Resistors (R5112, R5113 & R5114), Transistors (Q5110, Q5111 &
Q5112) & Diode (D5102)
Fig. 1
3
SA-AK640P / SA-AK640PC / SA-AK640PL / SA-AK640E / SA-AK640EB / SA-AK640EG / SA-AK640EE
Fig. 2
Note:
Refer to Power P.C.B. diagram (page 82) for SA-AK640P/PC-S, SA-AK640PL-S & SA-AK640E/EB/EG-S.
Refer to Power P.C.B. diagram (page 76) for SA-AK240PL-S & SA-AK640EE-S.
4
SA-AK640P / SA-AK640PC / SA-AK640PL / SA-AK640E / SA-AK640EB / SA-AK640EG / SA-AK640EE
M0609 S/N
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Here you can read online and download Panasonic SA-AK640P / SA-AK640PC / SA-AK640PL / SA-AK640E / SA-AK640EB / SA-AK640EG / SA-AK640EE Service Manual Supplement in PDF. SA-AK640P / SA-AK640PC / SA-AK640PL / SA-AK640E / SA-AK640EB / SA-AK640EG / SA-AK640EE service manual supplement will guide through the process and help you recover, restore, fix, disassemble and repair Panasonic SA-AK640P / SA-AK640PC / SA-AK640PL / SA-AK640E / SA-AK640EB / SA-AK640EG / SA-AK640EE Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.