Samsung Electronics
12-1
12. Troubleshooting
Charge-LED Malfunction /
INACTIV
abovEnter POWER OFF Mode
Are Pin #1 and #2 of
Charge-LED at 2.9V
when U/D* is inserted
while battery is not
fully charged?
Replace Charge-LED
Check soldering condition of Pin #2 and #49 of IC203
(1) Check soldering condition of Q601 and R625
(2) Replace Q601 if the LED does not work normally even after re-soldering.
Check connection status of 45-Pin FPC into CN601 and
Sub-Board
UPGRADE PROGRAM
Are Pin #1 and #49 of
IC204 at 2.9V when neither USB nor
DCJACK is being
inserted?
Does Q601 work
normally when neither USB nor DC
JACK is being
inserted?
Is connection between
Sub-Board and CN601
using a 45-pin FPC
OK?
Are Pin #2 and #49 of
IC204 at 0V, when U/D* is
inserted and battery is not
fully charged?
Is Pin #51 of IC204 at 0V?
Is Pin 44 of IC204 at 0V?
Or is Pin 45 at 2.9V?
CHECK POWER BLOCK(CHARGE)
CHECK DC JACK OR USB
* Check only with Battery
* Check only with Battery
* Check whether voltage at R625 and R626 is 0V
YES
1
2
Charge-LED
3
NO
YES
YES
YES
NO
NO
NO
NO
YES
A
YES
NO
NO
YES
Troubleshooting
12-2
Samsung Electronics
Are Pin #2 and #49 of
IC204 at 0V when U/D*
is inserted and battery is
fully charged?
IS PIN #2 OF IC204 AT
2.9V AND PIN #49 AT 0V
DURING M/V*?
Is Pin #51 of IC204 at 0V?
CHECK POWER BLOCK(CHARGE)
(1) UPGRADE PROGRAM
(2) CHECK IC204 IF PROGRAM IS UPGRADED
(1) UPGRADE PROGRAM
(2) CHECK IC303 IF PROGRAM IS UPGRADED
Repair Done
ENTER POWER ON MODE
A,
NO NO
YES
YES
YES
NO
YES
Troubleshooting
12-3
Samsung Electronics
IS CONNECTION BETWEEN
MODE DIAL FPC AND
CN102 OK?
DO INPUT PIN #31
AND #32 OF IC204 WORK
NORMALLY?
IS SOLDERING
CONDITION OF PIN #31 AND #32 OF
IC204 OK?
DO INPUT PINS(#1~#11) OF
CN102 WORK NORMALLY?
UPGRADE PROGRAM
CHECK FPC CONNECTION WITH CN102
CHECK SOLDERING CONDITION OF PIN
#31 AND #32 OF IC204
EXAMINE R104~R111
REPLACE MODE DIAL
MODE DIAL INACTIVE
* REFER TO TABLE. 12-1
* REFER TO FIG. 12-1
Table. 12-1
NO MODES CN102 Assigned Pin #s IC204 31Pin Voltage Range[V] IC204 32Pin Voltage Range [V]
1 SET 1 & 2 0 ~ 0.18 2.72 ~ 2.90 (OVER 2.72V)
3 DSC 3 0.425 ~ 0.780 2.72 ~ 2.90 (OVER 2.72V)
5 MPEG 5 0.975 ~ 1.315 2.72 ~ 2.90 (OVER 2.72V)
6 MP3 6 1.553 ~ 1.8936 2.72 ~ 2.90 (OVER 2.72V)
7 VOICE 7 2.72 ~ 2.90 (OVER 2.72V) 0 ~ 0.18
8 PC CAM 8 2.72 ~ 2.90 (OVER 2.72V) 0.425 ~ 0.780
9 Pick Bridge 9 2.72 ~ 2.90 (OVER 2.72V) 0.975 ~ 1.315
10 STORAGE 10 & 11 2.72 ~ 2.90 (OVER 2.72V) 1.553 ~ 1.8936
Fig. 12-1
YES
YES
YES
NO
NO
NO
YES
NO
WAVEFORM DURING MODE SELECTION
2.9V
0V
Troubleshooting
12-4
Samsung Electronics
IS CONNECTION BETWEEN
45-PIN FPC AND CN601 OK
CHECK FPC
CONNECTION WITH CN601
IS CONNECTION
BETWEEN 45-PIN FPC
AND SUB-BOARD OK?
CHECK FPC CONNECTION
WITH SUB-BOARD
DO OUTPUT PIN #4
AND #5 OF 45-PIN CONNECTOR ON
SUB-BOARD WORK
NORMALLY
CHECK SIDE CIRCUITS OF
KEY FUNCTION ON SUB BOARD
DO INPUT PIN #27 AND
#28 OF IC204 WORK NORMALLY?
CHECK SOLDERING CONDITION OF
IC204'S PIN #27 AND #28
UPGRADE PROGRAM
KEY INACTIVE
Fig. 12-2
IC204 PIN #27 IC204 PIN #28
NO Sub BOARD'S 45-PIN Connector PIN #4 Sub BOARD'S 45-PIN Connector PIN #5
Voltage Range [V] Voltage Range [V]
None 2.72 ~ 2.90 (OVER 2.72V) °ÿ DEFAULT 0 ~ 0.18 °ÿ DEFAULT
1 2.72 ~ 2.90 (OVER 2.72V) 2.72 ~ 2.90 (OVER 2.72V)
2 2.72 ~ 2.90 (OVER 2.72V) 2.245 ~ 2.585
3 2.72 ~ 2.90 (OVER 2.72V) 1.757 ~ 2.097
4 2.72 ~ 2.90 (OVER 2.72V) 1.281 ~ 1.621
5 2.72 ~ 2.90 (OVER 2.72V) 0.793 ~ 1.133
6 2.72 ~ 2.90 (OVER 2.72V) 0.317 ~ 0.657
7 2.154 ~ 2.494 0 ~ 0.18
8 0.425 ~ 0.780 0 ~ 0.18
9 1.553 ~ 1.893 0 ~ 0.18
10 0.975 ~ 1.315 0 ~ 0.18
* REFER TO FIG. 12-2
* REFER TO FIG. 12-2
Sub Board
YES
YES
YES
NO
NO
NO
NO
YES
!
@
#
$
%
&
*
)
^
(
Troubleshooting
12-5
Samsung Electronics
Fig. 12-3
IS VOLTAGE AT C405
OF IC410 5V?
UPGRADE PROGRAM, THEN
CHECK POWER BLOCK(DC/DC)
DO OUTPUT PIN #8
AND #9 OF CN103
WORK NORMALLY?
REPAIR/REPLACE ASS’Y POWER
DO INPUT PIN #54
AND #55 OF IC204
WORK NORMALLY?
CHECK SOLDERING CONDITION OF PIN
#54 AND #55 OF IC204
IS CONNECTION BETWEEN
FPC AND CN402 OK?
CHECK FPC CONNECTION WITH CN402
IS FPC CONNECTED
TO CN402 OK?
REPLACE FPC
IS FPC CONNECTION TO
CN601 AND SUB-BOARD OK?
CHECK 45-PIN FPC CONNECTION WITH
CN601AND SUB-BOARD
DOES BARRIER
WORK NORMALLY?
(1) UPGRADE PROGRAM
(2) REPAIR OR REPLACE MAIN BOARD IF BARRIER DOES NOT WORK NORMALLY,
AFTER PROGRAM UPGRADE
EXAMINE LENS
ZOOM INACTIVE
YES
YES
YES
YES
NO
ZOOM STARS ZOOM STOPS
2.9V
NO
0V
ZOOM RECOGNITION
NO
NO
NO
YES
YES
YES
NO
NO
Troubleshooting
12-6
Samsung Electronics
IS VOLTAGE AT C405
OF IC410 5V?
UPGRADE PROGRAM, THEN
CHECK POWER BLOCK(DC/DC)
DO OUTPUT PIN
#10 AND #15 OF CN103 WORK
NORMALLY?
REPAIR/REPLACE ASS’Y POWER
DO INPUT PIN #8
AND #64 OF IC204
WORK NORMALLY?
CHECK SOLDERING CONDITION OF PIN
#8 AND #62 OF IC204
CHECK IC303
SHUTTER INACTIVE
* REFER TO FIG. 12-4
* REFER TO FIG. 12-4
Fig. 12-4
YES
YES
YES
NO
NO
NO
2.9V
0V
SHUTTER
RECOGNITION
BEGINS
SHUTTER RECOGNITION
SHUTTER
RECOGNITION
STOPS
Troubleshooting
12-7
Samsung Electronics
NORMAL Diode
MEASURMENT
(USE MULTIMETER)
WHEN POWER IS SUPPLIED, CH8
OUTPUTS VCC_VCH8(3.6~5V)
IS THE POWER
INPUT(E101) OPENED TO
GND?
POWER OUTPUT : 17 LOCATIONS
(L114, L317, C153, L502, L503, C154, C155, C119,
C111, C102, C106, C107, C105, C148, C225,
C157,C171) ARE THEY
OPEN TO GND?
REPAIR/REPLACE MAIN BOARD
REMOVE ALL POWER SOURCES
REPAIR/REPLACE MAIN BOARD
ARE DIODE (D103, D105,
D101)POLARITY AND
MEASUREMENT OK?
REPLACE INFERIOR DIODE (REPLACE
IC105 IF CORRECT VOLTAGE(S) IS/ARE
NOT OUTPUTTED)
DO FUSES(E101, E103)
WORK NORMALLY?
REPLACE FUSE
INPUT POWER
NO POWER 1
CONSIDER RESISTANCE VALUE LESS
THAN 100 Ohm AS A FAILURE WHEN
CHECKING FOR SHORT CIRCUIT
WHEN MEASURING DIODE, CONSIDER
IT AS A FAILURE WHEN MEASURED
VALUE IS ABOVE 0.19
YES
NO
NO
YES
YES
YES
NO
NO
B,
Troubleshooting
12-8
Samsung Electronics
IS VCC_VCH8(3.6~5V)
BEING OUTPUTTED AT
(+) SIDE OF C102?
EXAMINE L101 REPAIR/REPLACE
MAIN BOARD
PRESS Power On
BUTTON
NO POWER 2
IS VSTANDBY(2.9V) BEING
OUTPUTTED AT (+) SIDE OF C107?
REPAIR/REPLACE MAIN BOARD
IS PIN #48 OF IC204 AT
HIGH(2.9V)?
REPLACE C105 OR IC204 AFTER EXAMINE
B
NO
YES
YES
YES
NO
NO
Troubleshooting
12-9
Samsung Electronics
WHEN POWER IS SUPPLIED, CH8
OUTPUTS VCC_VCH8(3.6~5V)
IS P5V(5V) BEING
OUTPUTTED AT (+)
SIDE OF C153?
REPAIR/REPLACE MAIN BOARD
OK
ARE VOLTAGE OUTPUTS
NORMAL AT5 LOCATIONS?
1.CH1 OUTPUT(L114) 3.0V
2.CH2 OUTPUT(L317):1.8V
3.CH4 OUTPUT(C154):15V
4.CH5 OUTPUT(C155): -7.5V
5.CH7 OUTPUT(C111):2.5V
NO POWER 2
YES
YES
NO
C,
NO
Troubleshooting
12-10
Samsung Electronics
DOES CURRENT
CONSUMPTION INCREASE
MORE THAN 1A?
DOES PIN #6 OF IC204
GO HIGH?
REPAIR/REPLACE MAIN BOARD
WRITE FIRMWARE ONTO
IC204 OR REPLACE
REPLACE FPC AFTER CHECKING
RESISTANCE VALUE OF R103
SUPPLY POWER / Power on
IS P5V(5V) BEING
OUTPUTTED AT (+)
SIDE OF C153?
REPLACE IC105
TURN OFF SOFT START FOR CH1~7
EXCEPT CH3 ==> CONNECT C127,
C130, C122 AND C113 TO GND WITH
JUMPER WIRES
REMOVE JUMPER WIRES, USED FOR
TURNING SOFT START OFF, ONE AT A
TIME TO LOCATE SOURCE OF PROBLEM
THEN REPAIR. IF SURROUNDING
CIRCUITS ARE OK, THEN REPLACE IC105
WHEN PRESSING
POWER ON BUTTON,
DOES PIN #43 OF
IC204 GO LOW?
C,
YES
YES
NO
NO NO
YES
NO
YES
Troubleshooting
12-11
Samsung Electronics
REPLACE A/V CABLE
REPLACE A/V JACK
REPLACE A/V JACK
CHECK Q801 OPERATION
CHECK IC703 PIN1 IS AT HIGH, AND
V_AMP_PS
EXAMINE C809, C810, R811, L803
IS A/V CABLE OK?
DOES PIN #4 OF ASS'Y POWER
WORK NORMALLY?
Power Ass’y of
OUTPUT JACK SIGNALS NORMALLY?
DOES COLLECTOR SIDE OF Q801
DETECT JACK_EAR_DET SIGNAL
PROPERLY?
DO PIN #2 AND #3 OF IC803
OUTPUT VIDEO SIGNALS?
NO A/V OUTPUT
JACK_EAR_DET
H P : High (2.8V)
A/V : Low (0V)
YES
NO
NO
YES
YES
YES
YES
NO
NO
NO
Troubleshooting
12-12
Samsung Electronics
IS A/V CABLE OK?
GO TO SETUP MODE AND TURN ON THE BEEP
IS EITHER A/V CABLE OR
EARPHONE INSERTED?
REMOVE A/V CABLE OR EARPHONE
ARE THERE ANY CRACKS ON SPEAKER
OR WIRE?
REPLACE ASS'Y-SPEAKER
DO PIN #19 AND #20 OF
IC706(AK4642) OUTPUT AUDIO
SIGNALS NORMALLY?
CHECK VOLTAGE SUPPLIED TO IC706
( #4, #15, #21)
DOES 27MHZ CLOCK ENTER INTO
PIN #17 OF IC706?
CHECK PIN #17(MCKI) OF IC706
ARE CONNECTIONS
AMONGST PIN #11, #13 AND #14 OF IC706
WITH G2, J3 AND F5 OF IC303,
RESPECTIVELY, OK?
CHECK CONNECTION BETWEEN CN601
AND 45-PIN FPC
CHECK DSC_ADO, DSC_ALRCK, DSC_ASCLK
NO BEEP SOUND
YES
NO
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
Troubleshooting
12-13
Samsung Electronics
IS A/V CABLE OK?
CHECK FPC CONNECTION WITH CN601,
AND CHECK MAIN POWER SOURCE
IS LCD BACKLIGHT WIRE OK?
REPLACE LCD Power Ass'y
ARE INPUT SIGNALS GO INTO PIN #9~#11
OF CN302 OK?
CHECK CIRCUITS AROUND BD301 ~ BD303
ARE INPUT DATA SIGNALS GO INTO
PIN #12~#19 OF CN302 OK?
CHECK CIRCUITS AROUND L309 ~ L316
REPLACE LCD Ass'y
LCD MALFUNCTION
(WHITEOUT, NO DISPLAY)
NO
YES
NO
YES
NO
YES
NO
YES
Troubleshooting
12-14
Samsung Electronics
IS A/V CABLE OK?
FORMAT INTERNAL MEMORY AFTER
CONNECT TO PC
DO PIN #1 OF Q404 AND Q405 GO
LOW AFTER BOOTING?
EXAMINE LENS
PROGRAM UP GRADE
REPAIR DONE
DELAYED DISPLAY DURING
POWER ON
NO
YES
YES
NO
Troubleshooting
12-15
Samsung Electronics
IS A/V CABLE OK?
REPLACE USB Cable
ARE PIN #9, #10 AND #11 OF
CN101 AT 5V?
CHECK CONNECTION STATUS OF
CN101 , AND CHECK USB FPC FOR
DISCONNECTION
IS PIN #45 OF IC204 AT 3V?
RE-SOLDER PIN #45 OF IC204, AND
REPLACE R112, R102
IS 3V DETECTED ON BOTH ENDS
OF L307?
RE-SOLDER OR REPLACE L307
IS 1.8V DETECTED ON BOTH
ENDS OF L308?
RE-SOLDER OR REPLACE L308
REPLACE IC303
USB MALFUNCTION
YES
YES
YES
YES
NO
NO
NO
NO
NO
YES
Troubleshooting
12-16
Samsung Electronics
MEMO
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