Sharp DV-620 (serv.man3) Service Manual ▷ View online
DV-620H
DV-620S
DV-620S
18
Is the signal from the pins(70) and (69) of IC504
input into the pins(1) and (28) of IC702?
Is the loading motor drive voltage applied to the
terminal of loading motor?
Replace IC702.
Check PC 8V line.
FLOW CHART NO.16
Check the LD-RVS/FWD signal line between IC702
and the IC504.
Is loading motor drive voltage output from the
pins(9) and (10) of IC702?
Check for mechanism and gear engagement and breakage.
Is 8V voltage applied to the pin(8) of IC702?
Check the line between the IC702 and the
loading motor.
Does the optical pickup move up and down after
the disc is removed?(Checking of symptom.)
Is FE signal output to the pin(21) of IC302 when
the disc is set?
No
FLOW CHART NO.17
See FLOW CHART NO.18<The [No Disc] indication.
(In case focus servo does not function.)>
Is there input signal on the pins(50,55) and (49,54)
of IC302?
Check the connection of optical pickup cable.
If it is normal, replace the optical pickup.
Replace IC302.
Is FE signal inputted into the pin(8) of IC401.
Check or replace IC401.
Check the line between the IC302 and IC401.
See FLOW CHART NO.16<The disc tray cannot be opened and closed.>
Are the "L" pulse outputted from the pin(10) of
IC8201?
Are the "L" pulse inputted into the pin(11) of
IC8201?
Replace IC8201.
Check the S8102 and OPEN/CLOSE KEY line.
FLOW CHART NO.15
Check the line between the pin(106) of IC504 and the
pin(11) of IC8201. (Check the TRAY ACK line and Q8202.)
Dose the "L" pulse inputted into the pin(13) of
IC8201, when the OPEN/CLOSE button is
activated on the DVD?
FLOW CHART NO.14
Is 5V voltage supplied at pin(1) of IC9004?
Check the secondary circuit, AT 5V line.
Is voltage of 2.5V sent out from the pin(2) of
IC9004?
Check for load circuit short-circuiting or leak.
Check the IC9004 periphery circuit.
Replace IC9004.
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
No
No
PC 2.5V is not output.(PC 3.3V(1), (2) is possib
le
The disc tr
a
y
cannot be opened and closed.
(F
or remote control is possib
le
.)
The disc tr
a
y
cannot be opened and closed.
The [No Disc] indication.
(In case of f
ocus error)
FLOW CHART NO.18
Is the focus control signal output to the pin(14) of
IC401?
Check the IC401 DAC power source periphery
circuit. If it is normal, replace IC401.
Check the focus control signal (DA0) line between
the IC702 and IC401.
Is 8V voltage applied to the pin(8) of IC702?
Check the line between the IC702 and the focus
actuator.
Check PC 8V line.
Is the focus control signal from the pin(14) of IC401
input into the pin(23) of IC702?
Is the focus control drive voltage output from the
pins (17) and (18) of IC702?
Check the connection of optical pickup cable.
If it is normal, replace the optical pickup.
Is the focus control drive voltage applied to the
terminal of focus actuator?
Replace IC702.
Is the Q301(LD POWER ON) drive signal
(VOSCON) output to the pin(150) of IC401?
Is the Q307(LD POWER CTL) drive output to the
pin(45) of IC302? (Checking of symptom.)
Is 5V voltage applied to the emitter of Q301 and
Q307?
Check the line between the pin(150) of IC401 and
the base of Q301 through Q304.
Check the line between the pin(45) of IC302 and
the base of Q307.
Check the A_5V line.
Are the 5V and 2.3V voltage supplied to the pins
(11) and (9) of pickup terminal.
Check the line between the Q301, Q307 and
pickup terminal.
Check the connection of optical pickup cable.
If it is normal, replace the optical pickup.
Is it possible to hold normally the disc with the
check?
FLOW CHART NO.19
Set the disc on the disc tray.
Replace the main PWB unit.
Check the video amplifier unit and the audio amplifier unit.(Q209, Q210, Q211, IC6001)
Check the loading switch.
Check for contamination of objective lens of
optical pickup.
Replace the optical pickup unit.
Is the level of RF signal which is output from
pin(28) of IC302, normal?
FLOW CHART NO.20
No
No
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
The [No Disc] indication.
(In case f
ocus ser
v
o
does
not function.)
The [No Disc] indication.
(When the laser beam
does not light.)
Both picture and sound do not oper
ate nor
mally
.
DV-620H
DV-620S
DV-620S
19
FLOW CHART NO.21
Set the disc on the disc tray.
Check the main unit.
(IC201, Q209, Q210, Q211 periphery circuit.)
Make sure that the level of pins(9), (10) and (11)
of IC2002 is "L" level.
Check the V-MUTE line. (Collector of Q2014)
Check or replace IC2002.
Yes
Are the video signals outputted to the pins of main
unit connector CN802?
CN802 1PIN CVBS
CN802 3PIN S-Y
CN802 5PIN S-C
Are the video signals shown above input into
the pins of IC2002?
IC2002 12PIN CVBS
IC2002 5PIN S-Y
IC2002 2PIN S-C
Are the video signal outputted to each pins of
IC2002?
IC2002 14PIN CVBS
IC2002 4PIN S-Y
IC2002 15PIN S-C
Check the line between the pins of main unit
connector CN802 and the pins of IC2002.
CN802 1PIN
→
IC2002 12PIN CVBS
CN802 3PIN
→
IC2002 5PIN S-Y
CN802 5PIN
→
IC2002 2PIN S-C
Check the peripheral circuit of S-C/V DRIVE circuit
IC2003 from the pin(14) of IC2002.
Check the peripheral circuit of S-Y DRIVE circuit
IC2005 from the pin(4) of IC2002.
Check the peripheral circuit of S-C/V DRIVE circuit
IC2003 from the pin(15) of IC2002.
Are the video signals outputted to the specific
output terminal?
Are the composite video signals outputted to the
VIDEO OUT terminal(J2002)?
Are the luminance signals outputted to the
S-OUT terminal(J2003)?
Are the chroma signals outputted to the S-OUT
terminal(J2003)?
No
No
No
No
No
No
Yes
Yes
Yes
Yes
No
Picture do not oper
ate nor
mally
.
FLOW CHART NO.22
Check the main unit.(IC601)
Check or replace IC6001.
Check the main unit.(IC504)
Check or replace IC6001.
Check the peripheral circuit of AUDIO DAC
(IC6001), AUDIO AMP.(IC6004) and AUDIO MUTE
(Q6007-8) circuit.
Set the disc on the disc tray.
Check the line between the pins of main unit
connector CN801 and the pins of IC6001.
CN801 3PIN
→
IC6001 5PIN AMCLK
CN801 4PIN
→
IC6001 3PIN ABCLK
CN801 5PIN
→
IC6001 1PIN ALRCLK
CN801 6PIN
→
IC6001 2PIN AOUT0
Check the line between the pins of main unit
connector CN801 and the pins of IC6001.
CN801 10PIN
→
IC6001 26PIN ADAC DA
CN801 11PIN
→
IC6001 27PIN ADAC CK
CN801 12PIN
→
IC6001 28PIN ADAC L
CN801 16PIN
→
IC6001 22PIN RSTO I
Are the digital audio interface signals outputted
to the pins of main unit connector CN801?
CN801 3PIN AMCLK
CN801 4PIN ABCLK
CN801 5PIN ALRCLK
CN801 6PIN AOUT0
Are the digital audio interface signals inputted
to the pins of IC6001?
IC6001 5PIN AMCLK
IC6001 3PIN ABCLK
IC6001 1PIN ALRCLK
IC6001 2PIN AOUT0
to the pins of main unit connector CN801?
CN801 10PIN ADAC DA
CN801 11PIN ADAC CK
CN801 12PIN ADAC L
CN801 16PIN RSTO I
to the pins of IC6001?
IC6001 26PIN ADAC DA
IC6001 27PIN ADAC CK
IC6001 28PIN ADAC L
IC6001 22PIN RSTO I
Are the audio signals output to the specific
outputted terminals?
Are the audio signals outputted to the FRONT
-L/R OUT terminal(J2002)?
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Sound do not oper
ate nor
mally
.
DV-620H
DV-620S
DV-620S
19
FLOW CHART NO.21
Set the disc on the disc tray.
Check the main unit.
(IC201, Q209, Q210, Q211 periphery circuit.)
Make sure that the level of pins(9), (10) and (11)
of IC2002 is "L" level.
Check the V-MUTE line. (Collector of Q2014)
Check or replace IC2002.
Yes
Are the video signals outputted to the pins of main
unit connector CN802?
CN802 1PIN CVBS
CN802 3PIN S-Y
CN802 5PIN S-C
Are the video signals shown above input into
the pins of IC2002?
IC2002 12PIN CVBS
IC2002 5PIN S-Y
IC2002 2PIN S-C
Are the video signal outputted to each pins of
IC2002?
IC2002 14PIN CVBS
IC2002 4PIN S-Y
IC2002 15PIN S-C
Check the line between the pins of main unit
connector CN802 and the pins of IC2002.
CN802 1PIN
→
IC2002 12PIN CVBS
CN802 3PIN
→
IC2002 5PIN S-Y
CN802 5PIN
→
IC2002 2PIN S-C
Check the peripheral circuit of S-C/V DRIVE circuit
IC2003 from the pin(14) of IC2002.
Check the peripheral circuit of S-Y DRIVE circuit
IC2005 from the pin(4) of IC2002.
Check the peripheral circuit of S-C/V DRIVE circuit
IC2003 from the pin(15) of IC2002.
Are the video signals outputted to the specific
output terminal?
Are the composite video signals outputted to the
VIDEO OUT terminal(J2002)?
Are the luminance signals outputted to the
S-OUT terminal(J2003)?
Are the chroma signals outputted to the S-OUT
terminal(J2003)?
No
No
No
No
No
No
Yes
Yes
Yes
Yes
No
Picture do not oper
ate nor
mally
.
FLOW CHART NO.22
Check the main unit.(IC601)
Check or replace IC6001.
Check the main unit.(IC504)
Check or replace IC6001.
Check the peripheral circuit of AUDIO DAC
(IC6001), AUDIO AMP.(IC6004) and AUDIO MUTE
(Q6007-8) circuit.
Set the disc on the disc tray.
Check the line between the pins of main unit
connector CN801 and the pins of IC6001.
CN801 3PIN
→
IC6001 5PIN AMCLK
CN801 4PIN
→
IC6001 3PIN ABCLK
CN801 5PIN
→
IC6001 1PIN ALRCLK
CN801 6PIN
→
IC6001 2PIN AOUT0
Check the line between the pins of main unit
connector CN801 and the pins of IC6001.
CN801 10PIN
→
IC6001 26PIN ADAC DA
CN801 11PIN
→
IC6001 27PIN ADAC CK
CN801 12PIN
→
IC6001 28PIN ADAC L
CN801 16PIN
→
IC6001 22PIN RSTO I
Are the digital audio interface signals outputted
to the pins of main unit connector CN801?
CN801 3PIN AMCLK
CN801 4PIN ABCLK
CN801 5PIN ALRCLK
CN801 6PIN AOUT0
Are the digital audio interface signals inputted
to the pins of IC6001?
IC6001 5PIN AMCLK
IC6001 3PIN ABCLK
IC6001 1PIN ALRCLK
IC6001 2PIN AOUT0
to the pins of main unit connector CN801?
CN801 10PIN ADAC DA
CN801 11PIN ADAC CK
CN801 12PIN ADAC L
CN801 16PIN RSTO I
to the pins of IC6001?
IC6001 26PIN ADAC DA
IC6001 27PIN ADAC CK
IC6001 28PIN ADAC L
IC6001 22PIN RSTO I
Are the audio signals output to the specific
outputted terminals?
Are the audio signals outputted to the FRONT
-L/R OUT terminal(J2002)?
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Sound do not oper
ate nor
mally
.
DV-620H
DV-620S
DV-620S
19
FLOW CHART NO.21
Set the disc on the disc tray.
Check the main unit.
(IC201, Q209, Q210, Q211 periphery circuit.)
Make sure that the level of pins(9), (10) and (11)
of IC2002 is "L" level.
Check the V-MUTE line. (Collector of Q2014)
Check or replace IC2002.
Yes
Are the video signals outputted to the pins of main
unit connector CN802?
CN802 1PIN CVBS
CN802 3PIN S-Y
CN802 5PIN S-C
Are the video signals shown above input into
the pins of IC2002?
IC2002 12PIN CVBS
IC2002 5PIN S-Y
IC2002 2PIN S-C
Are the video signal outputted to each pins of
IC2002?
IC2002 14PIN CVBS
IC2002 4PIN S-Y
IC2002 15PIN S-C
Check the line between the pins of main unit
connector CN802 and the pins of IC2002.
CN802 1PIN
→
IC2002 12PIN CVBS
CN802 3PIN
→
IC2002 5PIN S-Y
CN802 5PIN
→
IC2002 2PIN S-C
Check the peripheral circuit of S-C/V DRIVE circuit
IC2003 from the pin(14) of IC2002.
Check the peripheral circuit of S-Y DRIVE circuit
IC2005 from the pin(4) of IC2002.
Check the peripheral circuit of S-C/V DRIVE circuit
IC2003 from the pin(15) of IC2002.
Are the video signals outputted to the specific
output terminal?
Are the composite video signals outputted to the
VIDEO OUT terminal(J2002)?
Are the luminance signals outputted to the
S-OUT terminal(J2003)?
Are the chroma signals outputted to the S-OUT
terminal(J2003)?
No
No
No
No
No
No
Yes
Yes
Yes
Yes
No
Picture do not oper
ate nor
mally
.
FLOW CHART NO.22
Check the main unit.(IC601)
Check or replace IC6001.
Check the main unit.(IC504)
Check or replace IC6001.
Check the peripheral circuit of AUDIO DAC
(IC6001), AUDIO AMP.(IC6004) and AUDIO MUTE
(Q6007-8) circuit.
Set the disc on the disc tray.
Check the line between the pins of main unit
connector CN801 and the pins of IC6001.
CN801 3PIN
→
IC6001 5PIN AMCLK
CN801 4PIN
→
IC6001 3PIN ABCLK
CN801 5PIN
→
IC6001 1PIN ALRCLK
CN801 6PIN
→
IC6001 2PIN AOUT0
Check the line between the pins of main unit
connector CN801 and the pins of IC6001.
CN801 10PIN
→
IC6001 26PIN ADAC DA
CN801 11PIN
→
IC6001 27PIN ADAC CK
CN801 12PIN
→
IC6001 28PIN ADAC L
CN801 16PIN
→
IC6001 22PIN RSTO I
Are the digital audio interface signals outputted
to the pins of main unit connector CN801?
CN801 3PIN AMCLK
CN801 4PIN ABCLK
CN801 5PIN ALRCLK
CN801 6PIN AOUT0
Are the digital audio interface signals inputted
to the pins of IC6001?
IC6001 5PIN AMCLK
IC6001 3PIN ABCLK
IC6001 1PIN ALRCLK
IC6001 2PIN AOUT0
to the pins of main unit connector CN801?
CN801 10PIN ADAC DA
CN801 11PIN ADAC CK
CN801 12PIN ADAC L
CN801 16PIN RSTO I
to the pins of IC6001?
IC6001 26PIN ADAC DA
IC6001 27PIN ADAC CK
IC6001 28PIN ADAC L
IC6001 22PIN RSTO I
Are the audio signals output to the specific
outputted terminals?
Are the audio signals outputted to the FRONT
-L/R OUT terminal(J2002)?
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Sound do not oper
ate nor
mally
.
Display
