Sony DVP-S525D / DVP-S725D Service Manual ▷ View online
6-13
Digital
MPEG DTS
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VIDEO CD
D V D
C D
Digital
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VIDEO CD
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VIDEO CD
D V D
C D
A N O D E
T E S T
Digital
MPEG DTS
DISC
PBC ANGLE
REPEAT 1
PGM
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TITLE
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INDEX
HOUR
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
VIDEO CD
D V D
C D
Digital
MPEG DTS
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REPEAT 1
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
VIDEO CD
D V D
C D
6
FLD odd grids light up (0.7 sec)
7
FLD even grids light up (0.7 sec)
Note: Displays of 6 and 7 are repeated three times.
8
FLD ANODE TEST display No.1 (1 sec)
9
FLD even anodes light up (0.7 sec)
Note: Also, even anodes of alphanumeric section light up.
0
FLD odd anodes light up (0.7 sec)
Note: Also, odd anodes of alphanumeric section light up.
Note: Displays of 9 and 0 are repeated three times.
Note: Displays of 9 and 0 are repeated three times.
Hence, the operations of 1 through 0 arerepeated.
However, 2 is not displayed after the second and subsequent tests.
However, 2 is not displayed after the second and subsequent tests.
6-14
4. DESCRIPTION OF IF CON FUNCTION CHECK
MODE
1. Button Function
In the Test mode, press any button (except
[POWER]
button) on
the set. This operation terminates the automatic display test mode
of the FL display tube. During the time that the button is pressed,
the function name of the pressed button is displayed on the FL
display tube, and “NOTHING” is displayed if releasing the but-
ton. For the button names displayed, refer to the following table.
For the illuminated button (LED built in), it turns on and off alter-
nately each time it is pressed. For the multi-channel LED (blue
LED), it blinks when the “RETURN” button is pressed because
its dedicated button is not provided.
of the FL display tube. During the time that the button is pressed,
the function name of the pressed button is displayed on the FL
display tube, and “NOTHING” is displayed if releasing the but-
ton. For the button names displayed, refer to the following table.
For the illuminated button (LED built in), it turns on and off alter-
nately each time it is pressed. For the multi-channel LED (blue
LED), it blinks when the “RETURN” button is pressed because
its dedicated button is not provided.
The direction buttons are used to enter special modes.
↑
: FL display tube grid check
↓
: LED check
←
: Direct search dial check
→
: FL display tube anode check
The buttons are all checked with the voltage at the A/D port. The
reference voltage of A/D port is ever 5V. The voltage is calculated
at 10bit accuracy and evaluated whether same voltage can be ob-
tained in two-time operations to eliminate the chattering.
For the button check by the IF CON, a dead zone is provided, and
if voltage in the dead zone is entered, “IGNORE” is displayed.
reference voltage of A/D port is ever 5V. The voltage is calculated
at 10bit accuracy and evaluated whether same voltage can be ob-
tained in two-time operations to eliminate the chattering.
For the button check by the IF CON, a dead zone is provided, and
if voltage in the dead zone is entered, “IGNORE” is displayed.
2. Remocon Receiving Function
Upon reception of a code from the Remocon when “NOTHING”
is displayed, the function name of Remocon code is displayed on
the FL display tube. The codes that can be received are DVD cat-
egory codes only. The “DISPLAY” on Remocon functions to
change over the function name display and the code display. In
the code display mode, “REM NO xx” is displayed. A xx part is
the received code in Hex notation. It is FF when a Remocon code
is not received.
is displayed, the function name of Remocon code is displayed on
the FL display tube. The codes that can be received are DVD cat-
egory codes only. The “DISPLAY” on Remocon functions to
change over the function name display and the code display. In
the code display mode, “REM NO xx” is displayed. A xx part is
the received code in Hex notation. It is FF when a Remocon code
is not received.
3. SYSTEM CONTROL-IF CON Serial Communication
Normally, two-way communication at 24ms interval is made be-
tween IF CON and SYSTEM CONTROL. Whether this commu-
nication is carried out normally can be checked easily. When
“NOTHING” is displayed, OFF display of “VIDEO CD”, “DVD”,
and “CD” characters on the left side of FL display tube indicates
that a serial communication with the SYSTEM CONTROL is car-
ried out normally. ON display of these characters indicates that
the communication with the SYSTEM CONTROL is not made.
However, the communication is not made for several seconds af-
ter the Test mode became active (until MB-85 board is initial-
ized), and these characters may turn on. This status is normal.
tween IF CON and SYSTEM CONTROL. Whether this commu-
nication is carried out normally can be checked easily. When
“NOTHING” is displayed, OFF display of “VIDEO CD”, “DVD”,
and “CD” characters on the left side of FL display tube indicates
that a serial communication with the SYSTEM CONTROL is car-
ried out normally. ON display of these characters indicates that
the communication with the SYSTEM CONTROL is not made.
However, the communication is not made for several seconds af-
ter the Test mode became active (until MB-85 board is initial-
ized), and these characters may turn on. This status is normal.
4. Direct Search Dial
The grid X part displays images that rotate. At the same time, the
numbers on music calendar shift toward the direction in which the
direct search dial was rotated.
(Though this is displayed on the models which do not have the
dial, it does not function because of no dial.)
numbers on music calendar shift toward the direction in which the
direct search dial was rotated.
(Though this is displayed on the models which do not have the
dial, it does not function because of no dial.)
5. Click Shuttle
Whether the IF CON can judge the rotation of click shuttle is
checked.In the following grid check and anode check, if the part
that lights up is shifted as the click shuttle rotates, the function is
normal.
checked.In the following grid check and anode check, if the part
that lights up is shifted as the click shuttle rotates, the function is
normal.
6. Display of Fluorescent Display Tube
Use this mode when checking the FL display tube precisely, though
the FL display tube is roughly checked in the auto display mode.
Press simultaneously the
the FL display tube is roughly checked in the auto display mode.
Press simultaneously the
[STOP]
and
[PLAY]
buttons on the set,
so that the FL display tube can all be lighted up.
DVP-S525D:
IC201: Pin No. (Signal)
Pin 6 (AN0) Pin 5 (AN1) Pin 4 (AN2)
1
0
STOP
POWER
REPEAT
2
0.65
PAUSE
OPEN/CLOSE
CLEAR
3
1.24
←
PLAY
PROGRAM
4
1.88
↓
TITLE
SHUFFLE
5
2.41
ENTER
DVD MENU
SURROUND
6
2.92
↑
RETURN
7
3.45
→
PREVIOUS
8
3.94
JOG
NEXT
DVP-S725D:
IC201: Pin No. (Signal)
Pin 6 (AN0) Pin 5 (AN1) Pin 4 (AN2)
1
0
STOP
POWER
REPEAT
2
0.65
PAUSE
OPEN/CLOSE
CLEAR
3
1.24
←
PLAY
PROGRAM
4
1.88
↓
TITLE
SHUFFLE
5
2.41
ENTER
DVD MENU
SURROUND
6
2.92
↑
RETURN
7
3.45
→
SEARCH-REV
8
3.94
JOG
SEARCH-FWD
9
4.52 ACS ENTER
Input
Voltage [V]
Input
Voltage [V]
6-15
1G
2G
5G
6G
7G
8G
9G
10G
11G
12G
3G
4G
13G
a
f
h
g
e
r
p
n
s
c
m
d
j
k
b
13G
12G
11G
10G
9G
8G
7G
6G
5G
4G
3G
2G
1G
a
a
a
a
a
a
a
a
a
a
a
h
h
h
h
h
h
h
h
h
h
h
j
j
j
j
j
j
j
j
j
j
j
k
k
k
k
k
k
k
k
k
k
k
b
b
b
b
b
b
b
b
b
b
b
f
f
f
f
f
f
f
f
f
f
f
m
m
m
m
m
m
m
m
m
m
m
s
s
s
s
s
s
s
s
s
s
s
g
g
g
g
g
g
g
g
g
g
g
c
c
c
c
c
c
c
c
c
c
c
e
e
e
e
e
e
e
e
e
e
e
n
n
n
n
n
n
n
n
n
n
n
p
p
p
p
p
p
p
p
p
p
p
r
r
r
r
r
r
r
r
r
r
r
d
d
d
d
d
d
d
d
d
d
d
-
-
Dp
-
Dp
-
-
-
-
-
-
-
-
-
-
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P13
P14
P15
P16
P17
ANODE CONNECTION
( 2G~12G )
Dp
Dp
(Grid)
(Anode)
6-16
7. Grid Check (
↑
button: Grid Check Mode)
In this mode, arbitrary one grid of FL display tube lights up. (The
anodes of the grid concerned all light up.) To shift the grids, use
the click shuttle on the set. For the models not having the click
shuttle, the DVD Remocon having the click shuttle can be used
instead.
anodes of the grid concerned all light up.) To shift the grids, use
the click shuttle on the set. For the models not having the click
shuttle, the DVD Remocon having the click shuttle can be used
instead.
Staring from G1, rotate the click shuttle clockwise, and the grids
shift such as G2, G3 .... G16. The grids return to G1 following
G16.
shift such as G2, G3 .... G16. The grids return to G1 following
G16.
During this mode, any one grid always lights up.
8. Anode Check (
→
button: Anode Check Mode)
In this mode, arbitrary one anode of FL display tube lights up.
(All grids of the anode concerned all light up.)
Staring from P1, rotate the click shuttle clockwise, and the anodes
shift such as P2, P3 .... The anodes return to P1 following the last
anode. During this mode, one anode of all grids always lights up.
For the models not having the click shuttle, the DVD Remocon
having the click shuttle can be used instead.
(All grids of the anode concerned all light up.)
Staring from P1, rotate the click shuttle clockwise, and the anodes
shift such as P2, P3 .... The anodes return to P1 following the last
anode. During this mode, one anode of all grids always lights up.
For the models not having the click shuttle, the DVD Remocon
having the click shuttle can be used instead.
9. LED Control
In this mode, LEDs, one by one, light up by pressing the
↓
button.
Rotating the click shuttle causes the LED that lights up to be shifted.
For the illuminated buttons, the built-in LEDs turn on and off each
time the buttons are pressed, independently from this mode.
For the illuminated buttons, the built-in LEDs turn on and off each
time the buttons are pressed, independently from this mode.
5. TROUBLESHOOTING
1. Test Mode is not activated
With the set assembled in the front panel, the Test mode does not
become active if any button was pressed by any reason.Under this
condition, the power is not turned on even in the normal status.
(The set is kept in Standby status = Red LED is kept on) Not only
the buttons are inactive, but also a signal from Remocon is not
accepted. To check this condition, with the self check port (pin yl
of IF CON) kept in “Low” status, supply the AC power, so that the
Test mode is forcibly activated. On the board, short the lands where
SELF is printed. The IF CON checks the self check port only after
the power on reset (only when AC is supplied; not in Standby
status). If any button was pressed, the button name should be dis-
played on the FL display tube. Though no button is pressed this
time, display of other than NOTHING implies that the button was
pressed. However, the set will go in Standby status immediately
unless the FFC (pin qj) connected to the MB-85 board is discon-
nected in advance.
With the set assembled in the front panel, the Test mode does not
become active if any button was pressed by any reason.Under this
condition, the power is not turned on even in the normal status.
(The set is kept in Standby status = Red LED is kept on) Not only
the buttons are inactive, but also a signal from Remocon is not
accepted. To check this condition, with the self check port (pin yl
of IF CON) kept in “Low” status, supply the AC power, so that the
Test mode is forcibly activated. On the board, short the lands where
SELF is printed. The IF CON checks the self check port only after
the power on reset (only when AC is supplied; not in Standby
status). If any button was pressed, the button name should be dis-
played on the FL display tube. Though no button is pressed this
time, display of other than NOTHING implies that the button was
pressed. However, the set will go in Standby status immediately
unless the FFC (pin qj) connected to the MB-85 board is discon-
nected in advance.
2. Power is not turned on
1
1
Red (STANDBY) LED does not light up when AC was sup-
plied. The power (EVER 5V) is not supplied.
X201 is oscillating.
Loose connection of the connector between FL board and FR
board.
plied. The power (EVER 5V) is not supplied.
X201 is oscillating.
Loose connection of the connector between FL board and FR
board.
2
Red (STANDBY) LED is kept on though POWER button was
pressed. Any button is kept pressed.
PCHECK (IF CON pin uj) is over 0.1V.
pressed. Any button is kept pressed.
PCHECK (IF CON pin uj) is over 0.1V.
3
Green LED lights up when POWER button was pressed, but
red LED lights up again after several seconds. PCHECK (IF
CON pin uj) is abnormal. (Slow rise time from 0.1V to 1.5V.
Voltage must be less than 1.5V)
SYSTEM CONTROL does not operate normally.
red LED lights up again after several seconds. PCHECK (IF
CON pin uj) is abnormal. (Slow rise time from 0.1V to 1.5V.
Voltage must be less than 1.5V)
SYSTEM CONTROL does not operate normally.
6-16 E
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