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6. Troubleshooting
No Power Detected
(stand by LED OFF)
NO
F1S01 is normal? Change fuse
YES
NO
D1S05~07, ZD1S01~2 Change short circuited or
SHORT and OPEN opened parts
are normal?
YES
NO
Is there voltage at Check 2'st Voltage
Collector of
Q1S01
YES
Operation of NO
Q1S01 is Replace Q1S01
normal?
YES
Check feedback IC1S02
Samsung Electronics 6-1
Troubleshooting
Key Operation or
Remote Control Error
Is the measurement of NO
power with in normal value? Check power and front connector
YES
XT602 8MHz NO
Check the circuity around the clock
oscillation is normal?
YES
Check the circuity NO Check the circuity around
around IC601 reset? IC601 reset
YES
Check the soldering NO Check the soldering around the
around IC601 good? IC601
YES
Check the circuity around the swith.
Key operatious such NO check the condition of commmunication
as STOP,PLAY,OPEN with Main Micom
are normal? (IC601,52,66,11,42,44,RRQ,SRQ,SCLK,
DATA-IN,DATA-OUT)
YES
End repairs STOP,PLAY,OPEN
Key operatious are
normal?
YES
Change IC701
6-2 Samsung Electronics
Troubleshooting
PLAY MODE
(VCR Section)
INOPERATIVE
NO SEE
EE-VIDEO (VIDEO MISSING IN EE MODE)
YES
INSERT THE CASETTE
TAPE RECORDED BY
ANOTHER VCR AND
PRESS PLAY BUTTON
PLAY NO NO
INDICATOR PRESS PLAY KEY CHECK
IN THE DISPLAY IN REMOTE IC601, XT602
CONTROL
YES YES
CHECK PLAY Button
and Pattern
MECHANISM NO SEE
OPERATION (MECHANISM DOES NOT
OPERATE IN PLAY MODE)
YES DOES NOT OPERATE
OR OPERATES
BUT STOP SOON
NO SEE
PB-VIDEO VIDEO MISSING
IN PLAY MODE
YES
SEE (PB VIDEO) AUDIO MISSING
IN PLAY MODE
Samsung Electronics 6-3
Troubleshooting
MECHANISM DOESN'T
OPERATE IN PLAY MODE
(VCR Section)
TURN VCR POWER ON
LOAD A TAPE AND
PRESS PLAY BUTTON
NO (LOAD) NO CHECK
TAPE LOADING IC601 3 HIGH START (S602)
OPERATION IC601 25 LOW IC601
YES YES
CHECK CN604
8pin 12V
NO
CYLINDER CHECK CYLINDER
ROTATION
YES
SW 25Hz NO CYL FG.PG
IC601-24 IC601-97
YES
A
6-4 Samsung Electronics
Troubleshooting
A
CAPSTAN NO SEE
(CAPSTAN DOES NOT
ROTATION ROTATE)
YES
DC TAKE UP REEL SENSOR
(S.T REEL) SUPPLY REEL SENSOR
IC601-99,98 (PT601.PT602)
PULSE
STOP MODE CHECK
PROG.SW STATE LOADING MOTOR
IC601-76,77,78 MECHANISM OR SW603
YES
CHANGE IC601
Samsung Electronics 6-5
Troubleshooting
RECORD MODE
DOESN'T OPERATE (VCR Section)
PLAY NO SEE
(PLAY MODE
OPERATION DOESN'T OPERATE)
YES
LOAD VCR WITH A
BLANK TAPE AND
PRESS RECORD BUTTON
EJECT NO
REC MODE SAFETY TAB CHANGE TAPE
YES YES
CHANGE SW602
NO
D-REC A (H)
IC601-73 CHECK IC601
YES
NO SEE
REC-VIDEO (VIDEO MISSING IN
RECORD MODE)
YES
SEE
(AUDIO MISSING IN
RECORD MODE)
6-6 Samsung Electronics
Troubleshooting
FAST FORWARD
DOESN'T OPERATE (VCR Section)
LOAD TAPE AND
PRESS F.FWD BUTTON
F.FWD NO PRESS FF NO
INDICATOR IN KEY IN REMOTE CHANGE IC601, XT602
THE DISPLAY CONTROL
YES YES
CHECK TIMER
CHECK CN604
2Pin 15V? NO
4Pin 5V? CHECK POWER BLOCK
5,9Pin 3.2V?
YES
NO SEE CAPSTAN DOESNOT
IC601 68Pin
FG Pulse ROTATE
ROTATE GF
CHECK
MECHANISM
Samsung Electronics 6-7
Troubleshooting
FWD SEARCH DOESN'T
OPERATE
(VCR Section)
PLAY NO SEE
OPERATION (PLAY DOESN'T OPERATE)
YES
PRESS F.FWD FOR
FORWARD SEARCH
IS CAPSTAN NO SEARCH NO
SPEED CHANGED? CHANGE DECK CHANGE IC601
OPERATION
YES YES
END
NOISE BAR NO NO ADJUST
(CONTROL PULSE)
LOCKING IC601-89 A/CE HEAD
YES YES Control
CHECK IC601 CHECK CAPSTAN
MOTOR
6-8 Samsung Electronics
Troubleshooting
CASSETTE LOADING
MECHANISM
DOES NOT OPERATE (VCR Section)
TURN THE VCR
POWER ON AND
INSERT A TAPE
NO CST IN MODE NO CHECK
TAPE DETECTED START SENSOR (S602)
IC601-75:HIGH(5V)
IC601
YES YES
NO CHECK
PRESS EJECT BUTTON CN604 8pin 12V? DM B+ LINE
YES
IC601-38:HIGH(5V) YES
CHANGE IC601
IC601-39:LOW(0V)
NO
YES CHECK
IC601-3:LOW(0V) CASSETT LOADING
IC601-25:HIGH(5V) MECHANISM
NO
CHANGE IC601
Samsung Electronics 6-9
Troubleshooting
VIDEO MISSING IN
(VCR Section)
EE MODE
PLACE VCR IN STOP MODE
TUNER MODE OPERATION
NO IC801-2,3 NO CHECK
IC801-1
VIDEO IN VIDEO DATA/ IC601
CLOCK
YES YES
CHANGE IC801
IC301-50 NO IC801-4 NO
CHANGE IC801
VIDEO IN VIDEO OUT
YES YES
CHECK IC301
IC301-65 NO
CHECK IC301
VIDEO OUT
YES
CHECK YES
C808, C902, R301, R806, R900
IC801-22
NO
CHANGE IC801
6-10 Samsung Electronics
Troubleshooting
VIDEO MISSING IN
RECORD MODE (VCR Section)
IC301-50 NO E-E mode and IC801
VIDEO signal out? CHECK VIDEO signal out
YES
IC301-78 NO
CHECK REC FM signal? CHECK C392
YES
IC301-94 (SP) NO
IC301-88 (SLP) CHECK CN301
CHECK REC FM signal?
YES
NO DEFECT RECORD MODE
Samsung Electronics 6-11
Troubleshooting
VIDEO MISSING IN
(VCR Section)
PLAY MODE
NO SEE PAGE 9-5
VIDEO EE MODE
(VIDEO MISSING IN EE MODE)
OPERATION
YES
PLACE THE VCR PLAY MODE
NO NO CHECK
VIDEO FM H'D SW
IC301-21 IC301-70 IC601-24
YES
CHECK
YES VIDEO HEAD
VIDEO NO CHECK
IC301-78 C392
YES
YES YES
VIDEO VIDEO IN VIDEO OUT
IC301-65 IC801-10 IC801-18
NO NO NO
CHANGE IC301 CHECK IC801 CHECK Q810, R900, L901
6-12 Samsung Electronics
Troubleshooting
COLOR MISSING IN (VCR Section)
RECORD MODE NOTE: XT301 - Always (3.579545MHz)
(VIDEO IN) NO SEE PAGE 9-6
(VIDEO MISSING IN RECORD
RECORD MODE MODE)
YES
NO NO
COLOR signal CHECK XT301 CHANGE XT301
IC301-58
NO
NO CHANGE IC301
NO
COLOR KILLER CHECK THE REC LINE
IC301-33 (2V)
YES
CHANGE
IC301
Samsung Electronics 6-13
Troubleshooting
COLOR MISSING IN
(VCR Section) NOTE: XT301 - Always (3.579545MHz)
PLAY MODE
FM-ENV NO SEE PAGE 9-7
IC301-25 (VIDEO MISSING IN PLAY MODE)
YES
COLOR-MONITOR NO COLOR-KILLER YES
IC301-58 IC301-33(2V)
NO
NO
COLOR ROTERY CHECK IC601-29
IC301-57
CHECK
IC801-10
YES
CHECK IC301-27, 34,
XT301
YES
YES
CHANGE CHANGE
IC801 IC301
6-14 Samsung Electronics
Troubleshooting
OSD PICTURE
MISSING (VCR Section)
2FSC-IN NO
CHECK IC6P01
IC6P01-2
2FSC
YES
OSC IN NO
CHECK L6P05, C6P04, C6P05
IC6P01-6
YES
STB, CLK, DATA
IC6P01-9, 10, 11
NO
CHANGE IC6P01
Samsung Electronics 6-15
Troubleshooting
BLUE MISSING IN
(VCR Section)
STOP MODE
SELECT LINE MODE
WITHOUT INPUT SIGNAL
NO
IC301-66 "H" CHECK IC301
YES
NO
IC601-59 "H" CHECK IC301-66 TO IC601-59
YES
NO
IC6P01-9, 10, 11 CHECK IC601 - 6, 7, 8
(STB, CLK, DATA)
YES
CHANGE IC601
6-16 Samsung Electronics
Troubleshooting
AUDIO MISSING IN
(VCR Section)
(VCRMODE
EE Section)
VCR STOP MODE
AV1/AV2/AVX IC801-5,6,13,14,17, NO
INPUT CHOICE CHECK C820B, C826, C819B
MODE 18Pin Audio
Signal Input C825A, C825B, C826B
TUNER YES
NO IC4N01-43
CHECK Tuner
Audio Signal
AND C4N25 Input
YES
NO CHECK CLK,
CHECK
IC601 DATA IC4N01-12,
13Pin
YES
IC4N01-31, 30 NO
Audio Signal CHECK IC4N01, XT4N01
YES
NO IC801-27, 28
CHECK
IC801 AUDIO SIGNAL
YES
CHECK
L808, L807
R814, R813
Samsung Electronics 6-17
Troubleshooting
AUDIO MISSING IN (VCR Section)
REC MODE
CHECK
AUDIO MISSING
IN EE MODE
MONO
MISSING AUDIO MONO
HIFI
IC501-7, 69 NO CHECK
AUDIO SIGNAL R510, R509, R518, R517
YES
IC501-38, 39 NO CHECK
CLK, DATA IC601, R570, R571
YES
IC501-24, 27 NO CHANGE
Audio Signal IC501
YES
IC501-26 NO CHANGE
AUDIO FM IC501, R503, C513
YES
CHECK CYLINDER
6-18 Samsung Electronics
Troubleshooting
MONO
CHECK AUDIO MISSING NO CHECK
IN PB MODE PB MODE
YES
IC301-15 NO IC501-6 YES CHECK
AUDIO SIGNAL AUDIO SIGNAL R3A28, R3A60, C3A24
NO
YES CHANGE IC501
IC301-11 NO CHECK
AUDIO SIGNAL IC301-58 AND CHANGE IC301
YES
IC301-100 NO CHANGE
AUDIO FM SIGNAL IC301
YES
IC301-5
MIX SIGNAL NO CHECK NO IC301-68, 69
(AUDIO+70KHz) R3A04 CHECK (CLOCK, DATA)
YES
CN3A01-4 NO CHECK
OSCILLATION Q3A02, Q3A03, Q3A06
YES
CHECK
A/CE HEAD
Samsung Electronics 6-19
Troubleshooting
AUDIO MISSING
(VCR Section)
IN PB MODE
CHECK "AUDIO
MISSING IN EE MODE"
PLACE THE VCR IN PB MODE
MONO
AUDIO SELECT
HIFI
CHECK
IC501-78, 80 NO IC501-40(A.H D SW)
AUDIO FM(MIXED) CHANGE CYLINDER OR
IC501
YES
CHANGE
IC501
IC301-5 NO CHECK ACE HEAD
AUDIO SIGNAL C3A16 AND CHANGE IC301
YES
CHECK L3A01, R3A25
CHANG IC301
6-20 Samsung Electronics
Troubleshooting
NO SERVO LOCK (VCR Section)
PLAY
NO CHECK
IC601-93
C-FG CN604-1
YES
IC601-87 NO
CTL PULSE
YES
CHECK
CTL PULSE AC NO CHECK
LEVEL (SP. SLP: A/CE HEAD
OVER 1Vp-p)
YES
CHANGE
IC601
Samsung Electronics 6-21
Troubleshooting
CAPSTAN DOES
NOT ROTATE (VCR Section)
NO CHECK
CN604-2
15V B+ IN THE POWER BLOCK
YES
NO CHECK
CN604-3 5V AT AL5V LINE
AL 5V IN THE POWER BLOCK
YES
PLACE THE VCR
IN PLAY MODE
CN604-9 NO IC601-10 NO
CHANGE
3.2V OUTPUT(PWM) IC601
YES YES
CHECK R609
NO IC601-3 NO CHECK
CN604-5
OUTPUT(PWM) IC601
2.6V
YES YES
CHECK
CAPSTAN MOTOR CHECK R660
6-22 Samsung Electronics
Troubleshooting
DRUM DOES
(VCR Section)
NOT ROTATE
NO CHECK
CN604-6 12V AT AL12V LINE
12V IN THE POWER BLOCK
YES
NO
CN604-3 CHECK 5V LINE
5V
YES
CN604-12 NO NO
IC601-5,9 DRUM_CTL_L CHANGE IC601
2.5V
YES
CHECK CHECK
CYLINDER MOTOR R608, R617, C661
Samsung Electronics 6-23
Troubleshooting
Tray repeating open/close operation
Is (key PCB) mounted No
Check the soldering of Key PCB
correctly?
Yes
Is the connection right No Check the connection
between MCON1 and CN02 between MCON1 and CN02
(VCR MAIN PCB)?
Yes
Check the short between KEY1
and SEG7
6-24 Samsung Electronics
Troubleshooting
Disc loading error
Are main and deck No
Check the power
power OK?
Yes
Is the 40pin No
FFC cable (between main & deck) Reinsert FFC cable correctly
inserted correctly?
Yes
Is the wavefrom No
of DIC3 pin26 normal? Change the deck
(main PCB)
DIC3-Pin26
Yes
Change the main board
Samsung Electronics 6-25
Troubleshooting
No Analog Audio Output
Voltage of AR17 No
and AR31 is lower than 0.6V Check mute block
(jack PCB)
Yes
Proper vcc and vdd No
of AIC1 (main PCB) and Check SMPS board
AIC4 (jack PCB)
Yes
Output from pin7 and pin8 No Proper data between AIC1 No
Replace main board
of AIC1 of main PCB and DIC1 (main PCB)
Yes Yes
Proper output on pin1 Check the board to board connector
and pin7 of AIC4 between jack PCB and main PCB
Yes
Check the passive components
ardund jack pin
6-26 Samsung Electronics
Troubleshooting
No digital audio out
Check the digital audio Checking
Refer to user manual
setting
Skip setting check (hardware problem)
No
5V vcc of DOIC2-2Pin (jack PCB) Check DOL3 or Vcc Line
Yes
Proper signal input on pin1 No No
Proper signal on pin 10 of CN1 Replace main PCB
of DOIC2 of main PCB
Yes Yes
Check the signal on pin 10 of
CN4 of jack PCB
Proper signal output on Yes
Replace JACK1
DOL2
No
Check optical and coaxial output terminal
and passive components aroud them
Samsung Electronics 6-27
Troubleshooting
No audio on line input mode or
recorded disc playback
Check select signal of No
pin26, 27, 28, 29 in IC802 check pin13, 14 (input select)of IC802
(jack board)
Yes
Check pin19 of IC802,pin18 No
of MCON2,and pin16 of MCON2 Check SMPS board
in jack board
Yes
Check all the vcc of No
AIC9,AIC81,AIC82 Replace main PCB
(main board)
Yes
Check digital clock of No
pin10,11,12,15
Yes
Check passive components
around jack-pin and IC802
6-28 Samsung Electronics
Troubleshooting
CVBS output error
Is there No After DVDR is stop state,
NO 'PSO' Mark on FLT? push the progressive scan Key
on the Front panel.
Yes
12pin in CN3 of jack PCB or No
CN2 of main PCB has Check main PCB
normal level?
Yes
Analog signals are No Check the connection between
inputed normally 12pin in CN2 OF main PCB and VIC1
VIC1
Yes
Power is No Check the connection between
normal at VIC1-1,24, 34? VIC1-1 and power
(jack PCB)
Yes
No Check the connection between
Pin5 in VIC1 is
VIC1-13 and VCR Micom.
in LOW state?
check VIC1 peripheral circuit
Yes
Video signal of No Check the connection between
about 1V appears at
VIC1 and output jack
output jack?
CVBS
Yes
Check the RCA cable
Samsung Electronics 6-29
Troubleshooting
S-Video output error
Is there No After DVDR is stop state,
NO 'P480' Mark on FLT? push the progressive scan Key
on the Front panel.
Yes
10pin and 8pin in CN3 of No
jack PCB or CN2 of main PCB Check main PCB.
has normal level?
Yes
Analong signals are No Check the connection between 10pin
inputted nirmally and 8 pin in CN2 of main PCB and VIC1
VIC1 (Jack PCB)
Yes
No Check the connection between
Power is normal at VIC1-1,24, 34?
VIC1-1 and power
Yes
Pin5 in VIC1 is No Check the connection betweenVIC1-13
in LOW state? and VCR Micom. check VIC1 peripheral circuit
Yes
Video signals of No Check the connection between
about 1V appears at
VIC1 and output jack.
output jack?
Y(Color-bar) C(Color-bar)
Yes
Check the RCA cable
6-30 Samsung Electronics
Troubleshooting
Component output error
2,4 and 6pin in CN3 of No
jack PCB or CN2 of main Check main PCB
PCB has normal level?
Yes
Analog signals are No Check the connection between2,4 and
inputted normally 6pin in CN2 of main PCB and VIC1
VIC1
Yes
Power is normal No Check the connection between
at VIC1-1,24, 34? VIC1-1 and power
Yes
Video signals of No Check the connection between
about 1V appears at
VIC1 and output jack
output jack?
Yes Y(Color-bar) Pb(Color-bar) Pr(Color-bar)
Check the RCA cable
Samsung Electronics 6-31
Troubleshooting
Progressive output error
Is there No After DVDR is stop state,
'PSO' Mark on FLT?
push the progressive scan Key
on the Front panel.
Yes
Check the RCA cable
6-32 Samsung Electronics
Troubleshooting
AV1 CVBS Video Input Error
Pin6 in IC801 No Check the connection between
has nomal level?
(jack PCB) pin4 in IC801 and AV1 pin-jack
Yes
Pin16 in IC801 No
has nomal level? Check pin 9, 20 in IC801 of input power
CVBS(Color-bar)
Yes
Pin80 in TIC1 of main PCB No Check the connection between pin80
has nomal level? in TIC1 of main PCB and pin 13 in IC201
Yes
Pin40 and pin 54~43 in
No
TIC1 of main PCB has clock and Check TIC1 peripheral circuit
digital video signal
nomal level?
Yes
Check feed back
Samsung Electronics 6-33
Troubleshooting
AV2 CVBS Video Input Error
Pin 5 in IC801 No Check the connection between
has nomal level? pin 5 in IC801 and AV2 pin-jack
(jack PCB)
Yes
Pin 16 in IC801 No
Check pin 9, 20 in IC801 of input power
has nomal level?
Yes
Pin80 in TIC1 of main PCB No Check the connection between pin80
has nomal level? in TIC1 of main PCB and pin13 in IC201
Yes
Pin 40 and pin54~43 in
No
TIC1of main PCB has clock and Check TIC1 peripheral circuit
digital video signal nomal
level?
Yes
Change main PCB
6-34 Samsung Electronics
Troubleshooting
Line2 S-Video Video Input Error
Pin 15, 17 in CN3 No Check the connection between pin 15
has nomal level? and 17 in CN3 and L2 S- videojack
(jack PCB)
Yes
Pin9 and 18 in TIC1 No
Check the connection between pin9 and
of main PCB has
18 in TIC1 of main PCB and pin13 in IC202
nomal level?
Yes
Pin 40 and pin54~43
No
in TIC1 of main PCB has clock and Check TIC1 peripheral circuit
digital video signal
nomal level?
Yes
Change main PCB
Samsung Electronics 6-35
Troubleshooting
MEMO
6-36 Samsung Electronics