Sony DVP-NS300 Service Manual ▷ View online
6-15
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2-3-4. Communication Monitoring Display
The communication state is monitored and displayed while the
key name on the main unit and the remote commander is displayed.
When the communication to the System Controller failed, VIDEO
CD, DVD, and CD segments turn on.
key name on the main unit and the remote commander is displayed.
When the communication to the System Controller failed, VIDEO
CD, DVD, and CD segments turn on.
Communication error display (at no key input)
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Communication error display (at code display without input of
the remote commander)
the remote commander)
2-3-5. FLD Anode Test Display and SHUTTLE Click
Operation Test
2-3-5-1. Transition Keys in Self Check Mode
•
[RIGHT]
on the main unit and the remote commander
• SHUTTLE on the remote commander during Anode Test dis-
play
(This model does not provide JOG/SHUTTLE, and therefore
use another DVD remote commander having the JOG/
SHUTTLE)
(This model does not provide JOG/SHUTTLE, and therefore
use another DVD remote commander having the JOG/
SHUTTLE)
2-3-5-2. Operation and Display
The Self Check mode transits to this mode when
[RIGHT]
key is
entered. Only the first segment of each grid of FLD turns on, and
each time the SHUTTLE is entered, the segment of each grid is
switched in order. When SHUTTLE input is clockwise, the seg-
ment switches in 1
each time the SHUTTLE is entered, the segment of each grid is
switched in order. When SHUTTLE input is clockwise, the seg-
ment switches in 1
→
2
→
3 direction, or counterclockwise it
switches in 3
→
2
→
1 direction. This tests whether each segment
turns on individually.
Display at the start of Anode Test
↓
(Input in CW direction)
6-16
2-3-6. FLD Grid Test Display and SHUTTLE Click
Operation Test
2-3-6-1. Transition Keys in Self Check Mode
•
[UP]
on the main unit and the remote commander
• SHUTTLE on the remote commander during Grid Test display
(This model does not provide JOG/SHUTTLE, and therefore
use another DVD remote commander having the JOG/
SHUTTLE)
use another DVD remote commander having the JOG/
SHUTTLE)
2-3-6-2. Operation and Display
The Self Check mode transits to this mode when
[UP]
key is en-
tered. The first grid of FLD all turns on and other grids turn off.
Each time the SHUTTLE is entered, the grid is switched in order.
When SHUTTLE input is clockwise, the grid switches in 1
Each time the SHUTTLE is entered, the grid is switched in order.
When SHUTTLE input is clockwise, the grid switches in 1
→
2
→
3 direction, or counterclockwise it switches in 3
→
2
→
1 direc-
tion. This tests whether each grid turns on individually.
Display at the start of Grid Test
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↓
(Input in CW direction)
2-3-7. LED Test Display
2-3-7-1. Transition Keys in Self Check Mode
2-3-7-1. Transition Keys in Self Check Mode
• [DOWN] on the main unit and the remote commander
• SHUTTLE on the remote commander during LED Test display
• SHUTTLE on the remote commander during LED Test display
(This model does not provide JOG/SHUTTLE, and therefore
use another DVD remote commander having the JOG/
SHUTTLE)
use another DVD remote commander having the JOG/
SHUTTLE)
2-3-7-2. Operation and Display
LED is switched in order by the input of JOG/SHUTTLE. Also,
LED ON/OFF is switched by the input of same key as the function
that turns on the LED concerned.
LED ON/OFF is switched by the input of same key as the function
that turns on the LED concerned.
FLD display during LED Test
2-3-8. Beep Sound Test
2-3-8-1. Transition Keys in Self Check Mode
2-3-8-1. Transition Keys in Self Check Mode
• Input of a key on main unit
2-3-8-2. Operation and Display
In the Self Check mode, each time a key on the main unit is en-
tered, a beep sound of 1kHz (100ms) is generated.
tered, a beep sound of 1kHz (100ms) is generated.
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6-17
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P18
ANODE CONNECTION
( 1G~12G )
1G
5G
6G
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11G
12G
3G
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2G
6-18
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
set is kept in standby state), and also no button is active and the
remote commander is not accepted. In this case, disconnect the
MB-98 board and AV-56 board, and with the SELF CHECK (0
pin) of IF CON (IC404) on the IF-80 board kept in low state, supply
AC, and the Test mode will be forcibly activated. Or, on the board,
short the land printed as “SELF” to enter the Test mode. 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.
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
set is kept in standby state), and also no button is active and the
remote commander is not accepted. In this case, disconnect the
MB-98 board and AV-56 board, and with the SELF CHECK (0
pin) of IF CON (IC404) on the IF-80 board kept in low state, supply
AC, and the Test mode will be forcibly activated. Or, on the board,
short the land printed as “SELF” to enter the Test mode. 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-98 Board)
1. Test mode menu is not displayed
• Board visual check
• Board visual check
Check main IC’s, SYSTEM CONTROL (IC103), ROM (IC107
or IC108), AVD (IC503), and ARP&SERVO (IC302), for mount-
ing condition, direction, or evidence of short between pins, or
soldering failure. Also, compare with good board to check if
there are missing capacitors or resistors.
or IC108), AVD (IC503), and ARP&SERVO (IC302), for mount-
ing condition, direction, or evidence of short between pins, or
soldering failure. Also, compare with good board to check if
there are missing capacitors or resistors.
• Clock signal check
Measure the clock frequency at CPUCK (uj pin) of the SYS-
TEM CONTROL (IC103) using an oscilloscope.
If 33 MHz is outputted, an access to the ROM is normal, and
then check the items in 1-2.
In the case of 8.25 MHz output, check the items in 1-1.
If it is fixed to “H” or “L”, the X101 or SYSTEM CONTROL
(IC103) will be faulty.
TEM CONTROL (IC103) using an oscilloscope.
If 33 MHz is outputted, an access to the ROM is normal, and
then check the items in 1-2.
In the case of 8.25 MHz output, check the items in 1-1.
If it is fixed to “H” or “L”, the X101 or SYSTEM CONTROL
(IC103) will be faulty.
1-1. CPUCK (33 MHz) is not outputted
• Power supply voltage check
• Power supply voltage check
Check the power connectors of the boards or power input pins
of the IC’s for voltage. Check the IC’s in order of SYSTEM
CONTROL (IC103), ROM (IC107 or IC108), AVD (IC503), and
ARP&SERVO (IC302). If correct voltage is not outputted, the
power line will be shorted, or soldering or IC will be faulty.
of the IC’s for voltage. Check the IC’s in order of SYSTEM
CONTROL (IC103), ROM (IC107 or IC108), AVD (IC503), and
ARP&SERVO (IC302). If correct voltage is not outputted, the
power line will be shorted, or soldering or IC will be faulty.
• Reset signal check
Check that the XFRRST (uh pin) of SYSTEM CONTROL
(IC103) is “H” (3.3 V). If not “H”, a soldering failure of that
line, a shot with other line, or faulty SYSTEM CONTROL
(IC103) is doubtful.
(IC103) is “H” (3.3 V). If not “H”, a soldering failure of that
line, a shot with other line, or faulty SYSTEM CONTROL
(IC103) is doubtful.
• XRD, XWRH, and CS0X signals check
Using an oscilloscope, measure the XRD (u; pin), XWRH (ua
pin), and CS0X (tk pin) of the SYSTEM CONTROL (IC103)
to check if they are fixed to “L” (0 V) or “H” (3.3 V), or if they
are on the intermediate potential between “L” and “H”. If they
are fixed to “L” or “H”, or on the intermediate potential, a sol-
dering failure of that line, a shot with other line, or faulty SYS-
TEM CONTROL (IC103) is doubtful.
pin), and CS0X (tk pin) of the SYSTEM CONTROL (IC103)
to check if they are fixed to “L” (0 V) or “H” (3.3 V), or if they
are on the intermediate potential between “L” and “H”. If they
are fixed to “L” or “H”, or on the intermediate potential, a sol-
dering failure of that line, a shot with other line, or faulty SYS-
TEM CONTROL (IC103) is doubtful.
• HA [0 – 21] and HD [0 – 15] signals check
Using an oscilloscope, measure the HA [0
–
21] (<z/x> – <z/.>, <zzz> –
<zz,>
, <zx/>, 1 – 5 pins) and HD [0
–
15] (ig – <z//> pins) of the
SYSTEM CONTROL (IC103) to check if they are fixed to “L”
(0 V) or “H” (3.3 V), or if HA is on the intermediate potential
between “L” and “H” (HD is on intermediate potential in nor-
mal state), or if same waveform as that of adjacent pins is mea-
sured. In case of “L” or “H”, intermediate potential, or same
waveform, a soldering failure of that line, a shot with other line,
or faulty SYSTEM CONTROL (IC103) is doubtful.
(0 V) or “H” (3.3 V), or if HA is on the intermediate potential
between “L” and “H” (HD is on intermediate potential in nor-
mal state), or if same waveform as that of adjacent pins is mea-
sured. In case of “L” or “H”, intermediate potential, or same
waveform, a soldering failure of that line, a shot with other line,
or faulty SYSTEM CONTROL (IC103) is doubtful.
1-2. CPUCK (33 MHz) is outputted
(communication with ROM is normal)
• AVD (IC503) check
Using an oscilloscope, measure the SDCLKO (<zv.> pin) of the
AVD (IC503) to check that 95 MHz is outputted. If not output-
ted, a short of 27 MHz line across CLKI (<z,/> pin) and SCLKIN
(<z,x> pin), IC mounting failure, or faulty AVD (IC503) is doubt-
ful. If 27 MHz is outputted, the communication between SYS-
TEM CONTROL (IC103) and AVD (IC503) is disabled, and
therefore check the following items, particularly the AVD
(IC503).
AVD (IC503) to check that 95 MHz is outputted. If not output-
ted, a short of 27 MHz line across CLKI (<z,/> pin) and SCLKIN
(<z,x> pin), IC mounting failure, or faulty AVD (IC503) is doubt-
ful. If 27 MHz is outputted, the communication between SYS-
TEM CONTROL (IC103) and AVD (IC503) is disabled, and
therefore check the following items, particularly the AVD
(IC503).
• WAIT signal check
Using an oscilloscope, measure the XWAIT (yj pin) of the SYS-
TEM CONTROL (IC103) to check if it is fixed to “L” (0 V) or
on the intermediate potential. In case of “L” or intermediate
potential, examine CS2X
TEM CONTROL (IC103) to check if it is fixed to “L” (0 V) or
on the intermediate potential. In case of “L” or intermediate
potential, examine CS2X
–
CS5X (y; – yd pins) to check if any
pin is fixed to “L”.
For the CS2X and CS3X, AVD (IC503) mounting failure or faulty
IC is doubtful.
For the CS4X and CS5X, ARP&SERVO (IC302) mounting fail-
ure or faulty IC is doubtful.
If CS2X
For the CS2X and CS3X, AVD (IC503) mounting failure or faulty
IC is doubtful.
For the CS4X and CS5X, ARP&SERVO (IC302) mounting fail-
ure or faulty IC is doubtful.
If CS2X
–
CS5X are not “L”, or they are sometimes on interme-
diate potential, a soldering failure of XWAIT line, a short with
other line, or faulty SYSTEM CONTROL (IC103) is doubtful.
other line, or faulty SYSTEM CONTROL (IC103) is doubtful.
• INT signal check
Using an oscilloscope, measure the INT0
–
2, 4
–
6 (qh – qk
pins, w; – ws pins) of the SYSTEM CONTROL (IC103) to check
if INT0
if INT0
–
2, and 6 are fixed to “L” (0 V) and INT5 is fixed to
“H” (3.3 V), or they are on intermediate potential. In case of
“L”, “H”, or intermediate potential, a soldering failure of IC’s
connected to that line, a short with other line, faulty SYSTEM
CONTROL (IC103), or faulty each IC is doubtful.
INT0
“L”, “H”, or intermediate potential, a soldering failure of IC’s
connected to that line, a short with other line, faulty SYSTEM
CONTROL (IC103), or faulty each IC is doubtful.
INT0
: AVD (IC503)
INT1, INT2 : ARP&SERVO (IC302)
INT5, INT6 : AUDIO DSP (IC701)
INT5, INT6 : AUDIO DSP (IC701)
• CSnX signals check
Using an oscilloscope, measure the CX0X
–
CX7X (tk – yd,
yg
, yh pins) of the SYSTEM CONTROL (IC103) to check if
they are fixed to “L” (0 V), or two or more CS’s sometime go
“L”, or on intermediate potential. In case of fixed “L”, two or
more CS’s on “L” or intermediate potential, a soldering failure
of IC’s connected to that line, a short with other line, faulty
SYSTEM CONTROL (IC103), or faulty each IC is doubtful.
CS0X
“L”, or on intermediate potential. In case of fixed “L”, two or
more CS’s on “L” or intermediate potential, a soldering failure
of IC’s connected to that line, a short with other line, faulty
SYSTEM CONTROL (IC103), or faulty each IC is doubtful.
CS0X
: ROM (IC107 or IC108)
CS2X, CS3X: AVD (IC503)
CS4X, CS5X: ARP&SERVO (IC302)
CS4X, CS5X: ARP&SERVO (IC302)
• Other CS signals check
Using an oscilloscope, measure the VESCS/X39CS (i; pin) and
XDACS (ul pin) of the SYSTEM CONTROL (IC103) to check
if they are fixed to “L”. If fixed, a soldering failure of that line,
a short with other line, or faulty SYSTEM CONTROL (IC103)
is doubtful.
XDACS (ul pin) of the SYSTEM CONTROL (IC103) to check
if they are fixed to “L”. If fixed, a soldering failure of that line,
a short with other line, or faulty SYSTEM CONTROL (IC103)
is doubtful.
If the above checking could not find a fault, check the outputted
CS signal. If CS signal other than CS0X is outputted, a mounting
failure of each IC or faulty IC that corresponds to active CS signal
is doubtful.
CS signal. If CS signal other than CS0X is outputted, a mounting
failure of each IC or faulty IC that corresponds to active CS signal
is doubtful.
CS2X, CS3X: AVD (IC503)
CS4X, CS5X: ARP&SERVO (IC302)
CS4X, CS5X: ARP&SERVO (IC302)
2. Test mode menu is displayed, but operation stops
when a menu is selected
Using an oscilloscope, measure the PLCKO (og pin) of the ARP&
SERVO (IC302) to check if it is fixed to “L” (0 V) or “H” (3.3 V).
If fixed to “L” or “H”, the ARP&SERVO (IC302) is faulty. If not
fixed, check the items in 1-2. in order.
SERVO (IC302) to check if it is fixed to “L” (0 V) or “H” (3.3 V).
If fixed to “L” or “H”, the ARP&SERVO (IC302) is faulty. If not
fixed, check the items in 1-2. in order.
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