Read Sharp DV-660H (serv.man2) Service Manual online
DV-660S
DV-660H
DV-660H
No
No
Are the video signals output to the pins of main
unit connector CN801?
CN801 25Pin CVBS
CN801 27Pin C
CN801 29Pin Y
@
CN803 5Pin Cb
CN803 7Pin Y
CN803 9Pin Cr
Yes
Yes
Check the lines between the pins of main unit connector
CN801 and the pins of IC2006.
CN801 25Pin
→
IC2006 4Pin CVBS
CN801 27Pin
→
IC2006 15Pin C
CN801 29Pin
→
IC2006 14Pin Y
FLOW CHART NO.16
Both video and audio do not operate normally
.(2)
Check the main unit. (IC201, Q202-7 periphery circuit)
No
(Make sure that the IC201, Q208-13, and IC2005
peripheral circuit and control signal V-MUTE, RGB CTL
lines are on "L" level.)
Check the main unit.(IC801-3 circuit)
No
No
Check the peripheral circuit of Cb/V DRIVE circuit
IC2003 from the pin 5 of IC2006.
No
No
No
No
No
Set the disc on the disc tray.
<Video system>
Are the audio signals output to the pins of main unit connector CN801?
CN801 1Pin FRONT-L
CN801 6Pin REAR-R
CN801 3Pin FRONT-R
CN801 7Pin CENTER
CN801 5Pin REAR-L
CN801 8Pin SUB WOOFER
Are the video signals shown above input into the
pins of IC2006?
IC2006 4Pin CVBS
IC2006 15Pin C
IC2006 14Pin Y
Yes
Is the video signal output to each pin of IC2006?
IC2006 5Pin CVBS
IC2006 12Pin S-Y
IC2006 2Pin S-C
Make sure that the level of IC2006 pin 6 is "L" level.
Check or replace IC2006.
Check the V-MUTE line.
Yes
No
Yes
Are the audio signals output to the specific output
terminals?
No
Yes
Are the video signals output to the specific
output terminals?
Is the composite video signal output to the
VIDEO OUT terminal(J2001)?
Is the luminance signal output to the S-OUT
terminal (J2002)?
Is the chroma signal output to the S-OUT
terminal (J2002)?
Is theCb signal output to the Cb OUT terminal
(J2001)?
Is the Y signal output to the Y OUT terminal
(J2002)?
Is the Cr signal output to the Cr OUT terminal
(J2002)?
Are the audio signals output to the FRONT-L/R
OUT terminal (J2001)?
Are the audio signals output to the REAR-L/R OUT
terminal (J2001)?
Are the audio signals output to the CENTER/
SUBWOOFER terminal (J2001)?
Check the peripheral circuit of S-YC DRIVE circuit
IC2002 from the pin 12 of IC2006.
Check the peripheral circuit of S-YC DRIVE circuit
IC2002 from the pin 2 of IC2006.
Check the peripheral circuit of Cb/V DRIVE circuit
IC2003 from the pin 5 of CN803.
Check the peripheral circuit of Cr/Y DRIVE circuit
IC2004 from the pin 7 of CN803.
Check the peripheral circuit of Cr/Y DRIVE circuit
IC2004 from the pin 9 of CN803.
No
Check the peripheral circuit of AUDIO AMP. circuit
IC6001 from the pin 1,3 of CN801.
No
No
Check the peripheral circuit of AUDIO AMP. circuit
IC6002 from the pin 5,6 of CN801.
Check the peripheral circuit of AUDIO AMP. circuit
IC6002 from the pin 7,8 of CN801.
FLOW CHART NO.17
Both video and audio do not operate normally
.(3)
Set the disc and play.
<Audio system>
FLOW CHART NO.18
No
No
Are the video signals output to the pins of main unit
connector CN801?
CN803 11Pin B-OUT, CN803 13Pin G-OUT
CN803 15Pin R-OUT
Yes
Check the line between the pin 11 of CN803 and the pin 5
of CN2303.
Check the line between the pin 13 of CN803 and the pin 3
of CN2303.
Check the line between the pin 15 of CN803 and the pin 1
of CN2303.
Check the line between the pin 12 of IC2006 and the pin 7
of CN2303.
Check the line between the pin 2 of IC2006 and the pin 9
of CN2303.
Check the line between the pin 5 of IC2006 and the pin 11
of CN2303.
The signal is not output to 21PIN SCAR
T
. (The line output is OK.)
Check the main unit.
(Make sure that the IC201, Q208-13, and IC2005
peripheral circuit and control signal V-MUTE, RGB CTL
lines are on "L" level.)
No
No
<Video system>
Is specific signal input into the following terminals?
Is the B-OUT signal input into the pin 5 of CN2303?
Is the G-OUT signal input into the pin 3 of CN2303?
Is the R-OUT signal input into the pin 1 of CN2303?
Is the 21P-Y signal input into the pin 7 of CN2303?
Is the 21P-C signal input into the pin 9 of CN2303?
Is the 21P-CVBS signal input into the pin 11 of
CN2303?
Yes
Is the video signal output to each pin of IC2006?
(1) Is the B-OUTPUT signal output to the pin 7 of
21PIN SCART terminal (SC2201)?
(2) Is the G-OUTPUT signal output to the pin 11 of
21PIN SCART terminal (SC2201)?
Yes
Yes
When "RGB" is selected with the signal selection
switch (SW2301)
(1) Is the R-OUTPUT signal output to the pin 15 of
21PIN SCART terminal (SC2201)?
(2) Is the VIDEO-OUTPUT signal output to the
pin 19 of 21PIN SCART terminal (SC2201)?
Yes
When "S-VIDEO" is selected with the signal
selection switch (SW2301)
(1) Is the C-OUTPUT signal output to the pin 15 of
21PIN SCART terminal (SC2201)?
(2) Is the Y-OUTPUT signal output to the pin 19 of
21PIN SCART terminal (SC2201)?
Yes
Is the VIDEO-OUTPUT signal output to the pin 19
of 21PIN SCART terminal (SC2201) when "VIDEO"
is selected with the signal selection switch
(SW2301)?
Are the pins 7 and
12 of IC2302 on "L"
level?
Check the peripheral circuit of B/G DRIVE circuit IC2303,
Q2306 from the pin 5 of CN2303.
Check the peripheral circuit of B/G DRIVE circuit IC2303,
Q2304 from the pin 3 of CN2303.
Is the R-OUT signal output to the pin 5 of SCART R/V
DRIVE circuit IC2304?
Yes
No
Is the C-OUT signal output toQ2301,Q2303 of emitter?
No
Is the VIDEO OUT signal output to the pin 4 of SCART
R/V DRIVE circuit IC2304?
Yes
Is the Y-OUT signal output to the pin 4 of SCART R/V
DRIVE circuit IC2304?
Yes
Is the VIDEO OUT signal output to the pin 4 of SCART
R/V DRIVE circuit IC2304?
Yes
No
Check the periphery of Q2305, Q2307, and Q2308.
Check the periphery of Q2301, Q2302, and Q2303.
Check the periphery of SCART R/V DRIVE circuit IC2304.
No
Check the periphery of SCART R/V DRIVE circuit IC2304.
No
Check the periphery of SCART R/V DRIVE circuit IC2304.
No
No
No
No
Is the R-OUTPUT signal output to the pin 6 of IC2302?
Is the CVBS signal output to the pin 5 of IC2302?
No
No
Is the C-OUTPUT signal output to the pin 6 of IC2302?
Is the 21P-Y signal output to the pin 5 of IC2302?
No
Is the 21P VIDEO-OUTPUT signal output to the pin 5 of
IC2302?
Are the pins 7 and
12 of IC2302 on "H"
level?
No
Are the pins 7 and 12 of IC2302 on "L level?
10-3
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