(F61 Or F76 Error Code) - Panasonic SA-PT660 Technical Manual

F61 Error Code
A) D Amp Board
1. If the voltage at +
C5133 is 0.6Vdc, one
of the output ICs is
bad.
Check the speaker
terminal voltages to find out
which +/- pair is more than
0.6Vdc at power on. The
terminal that is 0.6V or
more has a bad output IC.
+C5133 = 0Vdc means
the output ICs are all
good.
2. If the voltage at fan
CN5501/pin 3 = 0.6Vdc,
replace the fan. 0V = norm.
3. If this CN5501/pin 3 fan
voltage is normal at 0Vdc
before shutdown, cut
jumper W5002. Reconnect
CN5050 & power On. Unit
stops shutting down?
Replace Q5640 & Q5641.
4. If cutting W5002 does not
stop the shutdown F61
error code, replace SMD
Q5101,Q5102.
Slide # 37
F61 / F76 error code Repair procedure (2/2)
B) SMPS Board
1. Keep CN5802/pin
4 disconnected.
2. Use the layout
diagram to locate
and measure the
+30V and -30V
and fan 18V
.
(CN5500/pin1)
Missing? Trace it
to its source using
the simplified PS
diagrams.
3. If the voltages are
all present,
replace TH5860,
Q5861,2 and
QR5802.
Use the layout diagrams
(slide 25-26) to locate
jumpers and key parts.
F76 Error Code
C) Power Board
1. Resolder
CN2008/pin 21 or
reconnect jumper
w2866 (removed
previously).
2. Unplug 50 pin
ribbon cable at
main board
CN2001 and power
on the unit. No
more F76 error
code? Replace the
DVD module
3. If F76 still appears,
replace Q2921,
Q2922 and R2913.
D) Main or Pwr Board
1. Resolder CN2008/pin 21 or
reconnect jumper w2866
(removed previously).
2. Remove jumper w2753 so
the unit will not shutdown.
a) If the unit still shuts
down with an F76 error
code, - replace the pull
up resistor (R2051) at
IC2001/pin 43 and then
the micro IC2001.
b) If the unit stops shutting
down, Check all the 11
power supply voltages
listed on the layout
diagram.
• If one is missing or
excessive, trace it to its
source.
• If the voltages are all normal,
check the main bd.
protection parts (D2945,
Q2919, Q2909, Q2923,4 and
related zeners.
Outline
Wireless
Mech
Pwr Supply
Protection
Audio
Models:
SA-PT660
SA-PT760
SA-PT960
SA-PT1060
SH-FX67, 85