Panasonic SA-VK480EE / SC-VK480EE Service Manual ▷ View online
37
6.5.6.
Deck Mechanism Error Code Table
6.6.
Sales Demonstration Lock Function
This function prevents discs from being lost when the unit is used for sales demonstrations by disabling the disc eject function.
"LOCKED" is displayed on the unit, and ordinary operation is disabled.
"LOCKED" is displayed on the unit, and ordinary operation is disabled.
6.6.1.
Setting
• Prohibiting removal of disc
1. Select the DVD/CD function.
2. At POWER ON condition, press and hold down the
button and the power button on the main unit for at least three sec-
onds. (The message, “LOCKED” appears when the function is activated.)
Note:
OPEN/CLOSE
button is invalid and the main unit displays “LOCKED” while the lock function mode is entered.
• Prohibiting operation of selector and disc
1. Select the DVD/CD function.
2. At POWER ON condition, press and hold down the button and the power button on the main unit for at least three sec-
onds. (The message, “LOCKED” appears when the function is activated.)
Note:
The following buttons are invalid and the main unit displays “LOCKED” while the lock function mode is entered.
6.6.2.
Cancellation
The lock can be cancelled by the same procedure as used in setting. ("UNLOCKED" is displayed on cancellation. Disconnecting the
power cable from power outlet does not cancel the lock.)
Main unit
OPEN/CLOSE,
/-TUNE MODE/—FM MODE, SELECTOR,
/
/
,
/
/
Remote con-
troller unit
troller unit
iPod/USB, FM/EXT-IN, NUMERIC KEYS 0~9,
,
,
,
,
,
, , RETURN, FUNCTIONS, FL DIS-
PLAY/SLEEP, MUTING
38
7 Troubleshooting Guide
7.1.
Troubleshooting Guide for F61 and/or F76
This section illustrates the checking procedures when upon detecting the error of “F61” and/or “F76” after power up of the unit. It is
for purpose of troubleshooting and checking in SMPS, D-Amp & Main P.C.B.
for purpose of troubleshooting and checking in SMPS, D-Amp & Main P.C.B.
7.1.1.
Block Diagram
Figure 1
Speaker Out
DC Detect
FRONT -
R
FRONT -
L
30V Detect
( 30V_SENSE )
SYS6V
D -AMP P.C.B.
SMPS P.C.B.
Main P.C.B.
(MICRO-P)
DCDET 2
DCDE
T1/2
(F61)
SYS6V
Temperature
Detect
DCDET 1
39
7.1.2.
Troubleshooting Guide
Symptom
Checking Items
Repair Items
Remarks
FL display blinking with
abnormal segment when
power ON the set or "F61"
abnormal segment when
power ON the set or "F61"
Check the soldering of the SMPS
P. C.B.
P. C.B.
x Is there any solder crack at area
(Q5860,Q5861, Q5862,TH5860)
x Check all the supply line 30V
x Is there any solderability at area
of feedback circuit
x Check feedback circuit (IC5801,
Q5802, D5806, PC5720, D5725)
Tou ch-up the solder crack area/
Change the defective parts.
Change the defective parts.
x Q5860,Q5861,Q5862,TH5860
(Tem perature Detect)
x QR5801 & QR5802 ( 30V
Detect)
x Tou ch-up
the
necessary
areas
x I
PC5720, D5725
C5801, Q5802, D5806,
SMPS
P. C.B.
P. C.B.
Refer to
Figure 2
Figure 2
First Power ON Display
immediate show "F61".
immediate show "F61".
Check Speaker output by using
multi-meter,
x If there is a DC Voltage around
multi-meter,
x If there is a DC Voltage around
30V
x Check Output IC (Pin 10 &
14) which have DC Voltage at
Speaker output short to
Vdd/Vss
Speaker output short to
Vdd/Vss
x If shorted that means D-Amp
damage already.
Change the defective parts.
D-AMP IC:
IC5000
P/N = C1BA00000492
IC5000
P/N = C1BA00000492
For Configuration
Refer to Figure 5
Refer to Figure 5
D-AMP
P. C.B.
P. C.B.
Refer to
Figure 3
Figure 3
Power ON for a while then
only trigger "F61".
(Symptom always happen)
only trigger "F61".
(Symptom always happen)
Check the soldering of the SMPS
P. C.B.
P. C.B.
x Is there any solder crack at area
(Q5860,Q5861, Q5862,TH5860)
x C
x +18V at ZJ2701 (Pin 8 & 9)
heck all the supply line
30V
Touch-up the solder crack area/
Change the defective parts.
Change the defective parts.
x Q5860,Q5861,Q5862,TH5860
(Tem perature Detect)
x QR5801 & QR5802 ( 30V
Detect)
Feedback Circuit: IC5801, Q5802
PC5720, D5725, D5806
PC5720, D5725, D5806
Main
P. C.B.
P. C.B.
D-Amp
P. C.B.
P. C.B.
Refer to
Figure 4
Figure 4
Refer to
Figure 3
Figure 3
Power ON for a while and
then trigger "F76"
then trigger "F76"
Check all supply voltages as
follows:
follows:
Step 1: Check for supply voltages
from SMPS P. C.B to Main
P. C.B at pin 2,5,8,9 of CN5802.
If there are supply voltages,
proceed to Step 2.
If no voltages detected, check wire
connection and circuitry connection
from SMPS P. C.B.
from SMPS P. C.B to Main
P. C.B at pin 2,5,8,9 of CN5802.
If there are supply voltages,
proceed to Step 2.
If no voltages detected, check wire
connection and circuitry connection
from SMPS P. C.B.
Step 2: Check if there is supply
voltages for Vp, FL1 & FL2
CN2807
x If there is supply voltages of
voltages for Vp, FL1 & FL2
CN2807
x If there is supply voltages of
+2.7V at CN2801, Pin 19 & 17
+5V at CN2801, Pin 26
+5V at CN2801, Pin 26
+5V at CN2807, Pin 5
x If there is supply voltages of
9V at CN6001
Check and change the possible
defective parts.
defective parts.
x FP2901 (Fuse Protector),
T2900, D2901, D2906, D2908,
D2909
D2909
x IC4000 (Switching Regulator IC)
& related regulator circuit
components
components
Refer to
Figure 4
Figure 4
Main
P. C.B.
P. C.B.
40
7.1.3.
Part Location
7.1.3.1.
SMPS P.C.B.
Figure 2 SMPS P.C.B.
Feedback circuit:
PC5720, D5725
PC5720, D5725
SMPS P.C.B.
+30V Detect:
QR5801, QR5802,
QR5801, QR5802,
Feedback Circuit:
IC5801, Q5802, D5806
IC5801, Q5802, D5806
Temperature Detect:
Q5860, Q5681, Q5862
Q5860, Q5681, Q5862
Temperature Detect:
TH5860
TH5860
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