Sony DVP-LS500 Service Manual ▷ View online
6-19
6-11. TROUBLESHOOTING
6-11-1. Cannot Enter Test Mode
You cannot enter the Test mode when either button has been pressed
by any reason with the board assembled in the front panel. In this
state, the power does not turn on even under normal condition (the
unit is kept in standby state), and also no button is active and the
remote commander is not accepted. In this case, disconnect the
MB-108 board and AF-98 board, and with the SELF CHECK (pin
0
by any reason with the board assembled in the front panel. In this
state, the power does not turn on even under normal condition (the
unit is kept in standby state), and also no button is active and the
remote commander is not accepted. In this case, disconnect the
MB-108 board and AF-98 board, and with the SELF CHECK (pin
0
) of IF CON (IC404) on the AF-98 board kept in low state, sup-
ply AC, and the IF CON self-diagnosis mode will be forcibly acti-
vated. The IF CON (IC404) checks the SELF CHECK port only
after the power on reset (only at AC supply, not in standby state).
If any button is pressed, its name is displayed on the fluorescent
display tube. But, if other than “NOTHING” is displayed though
no button is pressed, it means that any button has been pressed.
vated. The IF CON (IC404) checks the SELF CHECK port only
after the power on reset (only at AC supply, not in standby state).
If any button is pressed, its name is displayed on the fluorescent
display tube. But, if other than “NOTHING” is displayed though
no button is pressed, it means that any button has been pressed.
6-11-2. Faults in Test Mode (MB-108 board)
1. The test mode menu is not displayed.
1-1. Board visual check
1-1. Board visual check
Check that the ICs of SYSCON (IC104), ROM (IC106 or
IC107), AVD (IC403), ARP & SERVO (IC301) are working
correctly.
Check that outside appearance of the ICs is normal.
Check that IC pins are not short-circuited.
Check that there is no soldering error.
Check that outside appearance of the capacitors and resistors
is normal.
IC107), AVD (IC403), ARP & SERVO (IC301) are working
correctly.
Check that outside appearance of the ICs is normal.
Check that IC pins are not short-circuited.
Check that there is no soldering error.
Check that outside appearance of the capacitors and resistors
is normal.
1-2. Power supply voltage check
Check the power voltage of the power connector (CN102).
Check the power voltage of SYSCON (IC104).
Check the power voltage of ROM (IC106 or IC107).
Check the power voltage of AVD (IC403).
Check the power voltage of ARP & SERVO (IC301).
If the power voltage has any abnormality
Check the power voltage of SYSCON (IC104).
Check the power voltage of ROM (IC106 or IC107).
Check the power voltage of AVD (IC403).
Check the power voltage of ARP & SERVO (IC301).
If the power voltage has any abnormality
t
Check that the power supply lines are not shorted.
Check that there is no soldering error.
Check that there is no soldering error.
If any abnormality cannot be found still
t
Check that each IC is working normally.
1-3. Clock signal check
Measure the clock signal frequency at CPUCK (CL101) of
SYSCON (IC104) with an oscilloscope.
If the 8.25 MHz signal appears.
SYSCON (IC104) with an oscilloscope.
If the 8.25 MHz signal appears.
t Check the machine ac-
cording to section 1-3-1
If the 33 MHz signal appears.
If the 33 MHz signal appears.
t Check the machine accord-
ing to section 1-3-2.
If other frequencies are output.
If other frequencies are output.
R110 and R113 have defective soldering, X101 crystal os-
cillator is defective.
cillator is defective.
If the measurement point is fixed to either “H” or “L”.
t
Observe XFRRST (pin-uh) of SYSCON (IC104) with an
oscilloscope.
If the measurement point is “L”, check the following items.
oscilloscope.
If the measurement point is “L”, check the following items.
If the IC has defective soldering, if the IC is short-circuited.
If the measurement point is “H”,
If the measurement point is “H”,
t Component X101 or SYSCON (IC104) is defective.
1-3-1. When the 8.25 MHz signal appears at CPUCK
• Check the XRD, XWRH and CS0X signal.
• Check the XRD, XWRH and CS0X signal.
Observe XRD (pin-u;), XWRH (pin-ua), and CS0X (pin-tk)
of SYSCON (IC104) with an oscilloscope.
If these pins are fixed to either “L” (0V) or “H” (3.3V), or if
these pins stay in the center voltage, check the followings.
of SYSCON (IC104) with an oscilloscope.
If these pins are fixed to either “L” (0V) or “H” (3.3V), or if
these pins stay in the center voltage, check the followings.
Check if the signal line does not have the defective solder-
ing.
Check if the signal line is short-circuited with other signal
lines.
If you cannot find any problem
ing.
Check if the signal line is short-circuited with other signal
lines.
If you cannot find any problem
t SYSCON (IC104) is
defective.
• HA [0 to 21] signal and HD [0 to 15] signal check
Observe HA [0 to 21] (pins-<z/x to <z/. , <zzz to <zz, , <zx/ , 1 to 5)
of SYSCON (IC104) and HD [0 to 15] (pins-ig to <z// ) with
an oscilloscope.
If these pins are fixed to either “L” (0V) or “H” (3.3V), or if
the HA pin stays in the center voltage, check the followings.
(HD stays in the center voltage when it is normal.)
of SYSCON (IC104) and HD [0 to 15] (pins-ig to <z// ) with
an oscilloscope.
If these pins are fixed to either “L” (0V) or “H” (3.3V), or if
the HA pin stays in the center voltage, check the followings.
(HD stays in the center voltage when it is normal.)
t Check if the signal line does not have the defective
soldering, or is short-circuited with other signal line or
SYSCON (IC104) is defective.
soldering, or is short-circuited with other signal line or
SYSCON (IC104) is defective.
• Reset signal check
Check if XFRRST (pin-uh) of SYSCON (IC104) normal or
not.
The signal starts up at the same time as Vcc
not.
The signal starts up at the same time as Vcc
t Defective
soldering.
If the trouble does not apply to any of the above-described phe-
nomenon, SYSCON (IC104) or ROM (IC106 or IC107) is defec-
tive.
nomenon, SYSCON (IC104) or ROM (IC106 or IC107) is defec-
tive.
6-20
1-3-2.
When the 33 MHz signal appears at CPUCK
• WAIT signal check
Observe XWAIT (pin-yj) of SYSCON (IC104) with an os-
cilloscope.
If it is fixed to “L” (0V).
cilloscope.
If it is fixed to “L” (0V).
t Observe CS2X to CS5X (pins-
y;
to yd).
If CS2X or CS3X is “L”.
t AVD (IC403) has defective sol-
dering or AVD is defective.
If CS4X or CS5X is “L”.
If CS4X or CS5X is “L”.
t ARP & SERVO (IC301) has
defective soldering or ARP & SERVO is defective.
If any one of the above is not “L”.
If any one of the above is not “L”.
t XWAIT or CSnX is
short-circuited or has the defective soldering or AVD (IC403)
is defective or ARP & SERVO (IC301) is defective.
Center voltage
is defective or ARP & SERVO (IC301) is defective.
Center voltage
t The XWAIT line has defective soldering
or is short-circuited or AVD (IC403) is defective or ARP &
SERVO (IC301) is defective or SYSCON (IC104) is defec-
tive.
SERVO (IC301) is defective or SYSCON (IC104) is defec-
tive.
• CSnX signal check
Observe CS0X to CS5X (pins-tk to yd) of SYSCON (IC104)
with an oscilloscope.
If they are fixed to “L” (0V) or if to center voltage
with an oscilloscope.
If they are fixed to “L” (0V) or if to center voltage
t Check
that the ICs do not have the defective soldering or is short-
circuited with the other signal lines or SYSCON (IC104) is
defective.
circuited with the other signal lines or SYSCON (IC104) is
defective.
CS0X: ROM (IC106 or IC107)
CS2X, CS3X: AVD (IC403)
CS4X, CS5X: ARP & SERVO (IC301)
CS2X, CS3X: AVD (IC403)
CS4X, CS5X: ARP & SERVO (IC301)
If the trouble symptom does not apply to any of the above phe-
nomenon, SYSCON (IC104) or ROM (IC106 or IC107) is defec-
tive.
nomenon, SYSCON (IC104) or ROM (IC106 or IC107) is defec-
tive.
2. Test mode menu is displayed but the machine stops
when menu is selected
2-1. AVD (IC403) check
when menu is selected
2-1. AVD (IC403) check
Observe SDCLKO (pin-<zxm ) of AVD (IC403) with an oscillo-
scope.
95 MHz
scope.
95 MHz
t No problem
27 MHz
t Observe the XRST, HA, HD, XRD, XWRH, INT
and CS signal waveform at the respective pins of AVDEC,
AVD (IC403) is defective.
If the signal is other than the above frequencies
AVD (IC403) is defective.
If the signal is other than the above frequencies
t AVD
(IC403) 27MHz signal line (CLKI (pin-<zb, ), SCLKIN (pin-
<zn/
<zn/
)) is short-circuited, IC mount is defective, AVD (IC403) is
defective, PLL (IC103) is defective.
2-2. INT signal check
Observe INT0 to 2 (pins-qh to qk) of SYSCON (IC104) with
an oscilloscope.
If they are fixed to “L” (0V) or fixed to the center voltage
an oscilloscope.
If they are fixed to “L” (0V) or fixed to the center voltage
t
Check that the ICs do not have the defective soldering, or are
short-circuited, SYSCON (IC104) is defective, or the follow-
ing ICs are not defective.
short-circuited, SYSCON (IC104) is defective, or the follow-
ing ICs are not defective.
INT0: AVD (IC403)
INT1, INT2: ARP & SERVO (IC301)
INT1, INT2: ARP & SERVO (IC301)
2-3. If any abnormality cannot be confirmed by the
above-described checks, check the CS signal that
is currently output.
is currently output.
The CS signal other than CS0X is being output.
t IC mount
is defective or the IC is defective depending on the moving
CS signal.
CS signal.
CS2X, CS3X: AVD (IC403)
CS4X, CS5X: ARP & SERVO (IC301)
CS4X, CS5X: ARP & SERVO (IC301)
If the trouble is not applicable to any of the above phenomenon,
SYSCON (IC104) or ROM (IC106 or IC107) is defective.
SYSCON (IC104) or ROM (IC106 or IC107) is defective.
3. If the message “SDSP No Ack” appears after the menu
is displayed.
3-1. ARP & SERVO clock signal check
Check frequency of CLKIN (pin-<zb/ )
33 MHz
33 MHz
t Normal
Frequency other than 33 MHz
t CLKIN is short-circuited
or defective soldering or PLL (IC103) is defective or ARP &
SERVO (IC301) is defective
SERVO (IC301) is defective
3-2. ARP & SERVO (IC301) PLL oscillation check
Observe PLCKO (pin-ij) of ARP & SERVO (IC301) with an
oscilloscope.
If the pin is fixed to either “L” (0V) or “H” (3.3V).
oscilloscope.
If the pin is fixed to either “L” (0V) or “H” (3.3V).
If XRST if fixed to “L”. XRST has the defective solder-
ing, In all other cases. ARP & SERVO (IC301) is defec-
tive
ing, In all other cases. ARP & SERVO (IC301) is defec-
tive
If it is oscillating.
HA [0 to 7] are HD [8 to 15] are short-circuited, check
XSDSPIT and XSDSPCS or ARP & SERVO (IC301) is
defective.
XSDSPIT and XSDSPCS or ARP & SERVO (IC301) is
defective.
4. If trouble occurs at the specific item of the “Diag All
Check”.
IC mount of the NG item is defective or IC is defective.
5. Picture and audio are not output.
Check connection of CN601
Check for the defective connection of flat cable and check of
damage of the flat cable.
Check for the defective connection of flat cable and check of
damage of the flat cable.
6. Picture is output but audio is not output.
Check the audio data output (at pins-wf, wk, and wl) of AVD
(IC403)
(IC403)
The audio data is not output.
t AVD (IC403) or audio
DAC (IC601) mount is defective or power supply is de-
fective or AVD (IC403) or audio DAC (IC601) is defec-
tive.
fective or AVD (IC403) or audio DAC (IC601) is defec-
tive.
PLL (IC103) 512fs output check
If the frequency or waveform has abnormality.
t The sig-
nal line has defective soldering or the signal line is short-
circuited with other signal lines or PLL (IC103) is defec-
tive.
circuited with other signal lines or PLL (IC103) is defec-
tive.
7. Audio is output but picture is not output.
Observe pins-tg, tj, tl, ya, yd and yg of AVD (IC403) with
an oscilloscope.
If the analog signal is not output.
an oscilloscope.
If the analog signal is not output.
t The signal line has the
defective soldering or is short-circuited or parts are defective
or AVD (IC403) is defective.
or AVD (IC403) is defective.
6-21
6-21 E
6-11-3. Drive Auto Adjustment stops due to error.
The ARP & SERVO (IC301) analog circuit of MB-108 board is
defective or RF-Amp (IC201) or M-Driver (IC202) peripheral cir-
cuit is defective or optical pickup block is defective or flat cable
connection is defective
defective or RF-Amp (IC201) or M-Driver (IC202) peripheral cir-
cuit is defective or optical pickup block is defective or flat cable
connection is defective
6-11-4. The product itself is defective.
• If MB-108 does not have any problem,
• If MB-108 does not have any problem,
The board other than MB-108 board is defective or connec-
tion is defective or optical pickup block is defective or mecha-
nism deck is defective
tion is defective or optical pickup block is defective or mecha-
nism deck is defective
1. FL display does not light when the POWER button is
pressed.
1-1. Check the EVER -15.5V (pin-
2
), EVER+5.0V (pin-
qa
), EVER+11V (pin-
qd
) voltage at CN201 of the
power supply block
If voltage is abnormal.
t The power supply block is defec-
tive.
1-2. Check if the fuse on the AF-98 board has blown of
not.
If the fuse has blown
t Replace the fuse.
1-3. Check the P.CONT (pin-
9
) at CN471 of the AF-98
board when the POWER button is pressed.
If it remains at “L”,
t The signal line has the defective soldering or it is short-
circuited with other signal lines or capacitor or resistor is de-
fective or IFCON is defective or connection between the power
supply block and the AF-98 board is defective, or connector
installation is defective, or the power supply block is defec-
tive.
t The signal line has the defective soldering or it is short-
circuited with other signal lines or capacitor or resistor is de-
fective or IFCON is defective or connection between the power
supply block and the AF-98 board is defective, or connector
installation is defective, or the power supply block is defec-
tive.
1-4. Check if the button is kept depressed in the IFCON
self mode.
If the button is kept depressed.
t The front panel is defec-
tive, or AF-98 board is defective.
1-5. Check PONCHK (pin-
e;
) of IFCON (IC404) on the AF-
98 board.
If it is 0.5 V or more.
t The power supply is defective, or
AF-98 board is defective.
1-6. Check ND401 (pin-
1
& pin-
ek
) on the AF-98 board.
If no voltage supply
t Voltage driver (IC407) defective, or
the AF-98 board is defective.
2. FL display light once and becomes not light when
POWER button is pressed.
2-1. Check CN201 voltage of the power supply block
when the FL display light on.
If voltage is abnormal.
t The power supply block is defec-
tive, or the AF-98 board is defective, or MB-108 board is de-
fective
fective
2-2. Check XFRRST (pin-
8
) at CN101 on the MB-108
board.
If it is fixed to “L”.
t The signal line has defective solder-
ing, or is short-circuited with other signal lines, or parts are
defective.
defective.
2-3. Check XIFBSY (pin-
5
), XIFCS (pin-
6
), SI0 (pin-
4
),
SO0 (pin-
1
) and SC0 (pin-
3
) at CN101
If they are fixed to “H” or “L”.
t The signal line has defective soldering, or is short-cir-
cuited with other signal line, or parts are defective, or
SYSCON (IC104) is defective
If they change between “L/H”.
Connector installation is defective, or the AF-98 board is de-
fective, or SYSCON (IC104) is defective.
If they stay in the center voltage.
Poor connection of flexible wiring board such as it is inserted
in an angle diagonally, or defective soldering, or is short-cir-
cuited with other signal line.
t The signal line has defective soldering, or is short-cir-
cuited with other signal line, or parts are defective, or
SYSCON (IC104) is defective
If they change between “L/H”.
Connector installation is defective, or the AF-98 board is de-
fective, or SYSCON (IC104) is defective.
If they stay in the center voltage.
Poor connection of flexible wiring board such as it is inserted
in an angle diagonally, or defective soldering, or is short-cir-
cuited with other signal line.
2-4. Check PONCHK (pin-
e;
) of IFCON (IC404) on the
AF-98 board.
If rise-up time from 0.5 V to 1.5 V or more takes longer time,
or it does not exceed 1.5 V or more.
or it does not exceed 1.5 V or more.
t The AF-98 board is
defective.
3. Both picture and audio are not output.
Connection between the power supply block and the AF-98
board is defective, or connection between the AF-98 board
and the MB-108 board is defective, or connector installation
is defective, or AF-98 board is defective.
board is defective, or connection between the AF-98 board
and the MB-108 board is defective, or connector installation
is defective, or AF-98 board is defective.
4. Picture is not normal. (Block noise or others appear.)
The MB-108 board AVD (IC403) or SDRAM (IC404, IC405)
is defective, or ARP & SERVO (IC301) is defective.
is defective, or ARP & SERVO (IC301) is defective.
7-1
7-1. POWER SUPPLY CHECK
1. ETXNY410E0F Board
Mode
E-E
Instrument
Digital voltmeter
EVER +5.0 V Check
Test point
CN201 pin qa
Specification
5.0
± 0.3 Vdc
SW +3.5 V Check
Test point
CN201 pin 0
Specification
3.5
± 0.2 Vdc
SW +5 V Check
Test point
CN201 pin qs
Specification
5.0
± 0.3 Vdc
SW +11 V Check
Test point
CN201 pin 5, 6
Specification
11.0
± 1.0 Vdc
EVER +11 V Check
Test point
CN201 pin qd
Specification
11.2
± 1.0 Vdc
EVER –15.5 V Check
Test point
CN201 pin 2
Specification
–15.5
± 1.0 Vdc
Checking method:
1) Confirm that each voltage satisfies the specification.
1) Confirm that each voltage satisfies the specification.
Note
Because the heatsink installed on the power supply board is a
part of the primary side, never touch it to avoid electrical shock.
part of the primary side, never touch it to avoid electrical shock.
SECTION 7
ELECTRICAL ADJUSTMENT
DVP-LS500
In making adjustment, refer to 7-6. Adjustment
Related Parts Arrangement.
Related Parts Arrangement.
Note:
During diagnostic check, the characters and color bars can
be seen only with the NTSC monitor. Therefore, for diag-
nostic check, use the monitor that supports both NTSC and
PAL modes.
Use the reference disc for PAL for check, and use the refer-
ence disc for NTSC for adjustment.
be seen only with the NTSC monitor. Therefore, for diag-
nostic check, use the monitor that supports both NTSC and
PAL modes.
Use the reference disc for PAL for check, and use the refer-
ence disc for NTSC for adjustment.
This section describes procedures and instructions necessary for
adjusting electrical circuits in this set.
adjusting electrical circuits in this set.
Instruments required:
1) Color monitor TV
2) Oscilloscope 1 or 2 phenomena, band width over 100 MHz,
2) Oscilloscope 1 or 2 phenomena, band width over 100 MHz,
with delay mode
3) Frequency counter (over 8 digits)
4) Digital voltmeter
5) Standard commander (RMT-D162P)
6) DVD reference disc
4) Digital voltmeter
5) Standard commander (RMT-D162P)
6) DVD reference disc
HLX-501 (J-6090-071-A) (dual layer) (NTSC)
HLX-503 (J-6090-069-A) (single layer) (NTSC)
HLX-504 (J-6090-088-A) (single layer) (NTSC)
HLX-505 (J-6090-089-A) (dual layer) (NTSC)
HLX-506 (J-6090-077-A) (single layer) (PAL)
HLX-507 (J-6090-078-A)(dual layer) (PAL)
HLX-503 (J-6090-069-A) (single layer) (NTSC)
HLX-504 (J-6090-088-A) (single layer) (NTSC)
HLX-505 (J-6090-089-A) (dual layer) (NTSC)
HLX-506 (J-6090-077-A) (single layer) (PAL)
HLX-507 (J-6090-078-A)(dual layer) (PAL)
7) SACD reference disc
HLXA-509 (J-6090-090-A)
8) Extention Cable (J-6090-107-A)
Click on the first or last page to see other DVP-LS500 service manuals if exist.