Sony DVP-CX875P Service Manual ▷ View online
6-14
6-10. IF CON SELF DIAGNOSTIC FUNCTION
1. FR-189 BOARD (IF CON) TEST MODE
The front board test mode is the IF CON self diagnostic mode.
The IF CON can diagnose the functions of the front panel boards
that the IF CON controls. Normally, the IF CON makes a serial
communication with the SYSTEM CONTROL and operates fol-
lowing the commands from the SYSTEM CONTROL, but in the
Test mode, the IF CON operates independently from the SYS-
TEM CONTROL.
The IF CON can diagnose the functions of the front panel boards
that the IF CON controls. Normally, the IF CON makes a serial
communication with the SYSTEM CONTROL and operates fol-
lowing the commands from the SYSTEM CONTROL, but in the
Test mode, the IF CON operates independently from the SYS-
TEM CONTROL.
In the Test mode, the following functions can be checked.
1. Button function
2. Remote commander receiving function
3. SYSTEM CONTROL-IF CON serial communication
4. Click shuttle function
5. Fluorescent display tube lighting check
1. Button function
2. Remote commander receiving function
3. SYSTEM CONTROL-IF CON serial communication
4. Click shuttle function
5. Fluorescent display tube lighting check
Grid check
Anode check
Anode check
6. LED control function
In the Test mode, the set operates same as usual, except voltage
monitoring, communication monitoring, display of fluorescent
display tube, and LED control.
1. The routine that monitors +3.3 V (P-CONT) of MB-107 board
monitoring, communication monitoring, display of fluorescent
display tube, and LED control.
1. The routine that monitors +3.3 V (P-CONT) of MB-107 board
is not provided.
2. The monitoring timer for serial communication with the SYS-
TEM CONTROL is not provided. The set is not placed in the
Standby mode, even if the communication with SYSTEM
CONTROL is normal.
Standby mode, even if the communication with SYSTEM
CONTROL is normal.
3. Display of fluorescent display tube (normally, display is made
following the commands from SYSTEM CONTROL)
4. LED control (normally, control is made following the com-
mands from SYSTEM CONTROL)
2. OPERATION OF SELF CHECK MODE
The Self Check mode is the function to conduct the basic test to
the FL display and DVD panel section.
the FL display and DVD panel section.
2-1. Self Check Mode Transition Processing
At the AC Power ON after IF CON (IC106) was reset, the input to
10pin (SELF CHECK) is judged and if “Low” is entered, the main
unit transits to the Self Check mode. In this port input judgment,
the result of 3-time attempts must be same (assuming that the MB-
107 board is not connected). While pressing the
10pin (SELF CHECK) is judged and if “Low” is entered, the main
unit transits to the Self Check mode. In this port input judgment,
the result of 3-time attempts must be same (assuming that the MB-
107 board is not connected). While pressing the
x
key on the main
unit with the IF CON in STANDBY mode, enter
[ RETURN]
→
[DISPLAY]
(or
[SET UP]
) on the remote com-
mander, and the unit transits to the Self Check Mode. The Self
Check mode terminates when the IF CON transits to the STANDBY
mode.
Check mode terminates when the IF CON transits to the STANDBY
mode.
O
6-15
2-2. Operation of Auto Self Check
When the Self Check mode becomes active at the AC Power ON
or by key input, the test display of the following steps (1) to (4) is
repeated.
(1) FLD and LED all ON (for 5 seconds)
or by key input, the test display of the following steps (1) to (4) is
repeated.
(1) FLD and LED all ON (for 5 seconds)
(2) MODEL display (for 2 seconds)
(3) Version display (for 2 seconds)
(4) ROM creation date display (for 2 seconds)
SACD
DVD
DVD
VCD
CD
GROUP
TITLE
TRACK
CHAP
MULTI
INDEX
ANGLE
NTSC
DISC
HOUR
MIN
SEC
PR
PROGRESSIVE
OGRESSIVE
ALL DISCS
ALL DISCS
SHUFFLE
SHUFFLE
VIDEO
VIDEO
AUDIO
UDIO
MP 3
MP 3
REPEA
REPEAT 1
PGM A- B
PGM A- B
Digital
Digital
;
GROUP
TITLE
TRACK
CHAP
DISC
MULTI
INDEX
ANGLE
NTSC
HOUR
MIN
SEC
PROGRESSIVE
VCD
ALL DISCS
SHUFFLE
VIDEO
AUDIO
MP 3
REPEAT 1
PGM A- B
Digital
;
DVD
CD
SACD
GROUP
TITLE
TRACK
CHAP
DISC
MULTI
INDEX
ANGLE
NTSC
HOUR
MIN
SEC
PROGRESSIVE
VCD
ALL DISCS
SHUFFLE
VIDEO
AUDIO
MP 3
REPEAT 1
PGM A- B
Digital
;
DVD
CD
SACD
GROUP TITLE
TRACK
CHAP
DISC
MULTI
INDEX
ANGLE
NTSC
HOUR
MIN
SEC
PROGRESSIVE
VCD
ALL DISCS
SHUFFLE
VIDEO
AUDIO
MP 3
REPEAT 1
PGM A- B
Digital
;
DVD
CD
SACD
6-16
2-3. Each Self Check Function
Each Self Check function tests the FLD display, LED display, and
key input.
key input.
2-3-1. FLD and LED All ON
2-3-1-1. Transition Keys in Self Check Mode
2-3-1-1. Transition Keys in Self Check Mode
•
x
key and
A
key on the main unit
•
← key on the main unit and the remote commander
2-3-1-2. Operation and Display
In this mode, all LEDs except STANDBY LED and all segments
of FLD turn ON.
Example of FLD all ON
of FLD turn ON.
Example of FLD all ON
2-3-2. Main Unit Key Name Display and Key Code Display
2-3-2-1. Transition Keys in Self Check Mode
2-3-2-1. Transition Keys in Self Check Mode
• Keys on main unit except keys transited in self check
2-3-2-2. Operation and Display
When a key on the main unit is pressed in the Self Check mode,
the name of that key is displayed on the FLD. Also, the key name
display and the key code display can be switched with the
the name of that key is displayed on the FLD. Also, the key name
display and the key code display can be switched with the
[DISPLAY]
key on the remote commander. “NOTHING” is dis-
played when nothing is entered. Also, VIDEO CD, DVD, and CD
segments turn on when a communication error occurred.
segments turn on when a communication error occurred.
FLD display (at input of
H
key on the main unit)
Input
IC106: Pin No. (Signal)
Voltage [V]
Pin ea (AD2)
Pin es (AD3)
Pin ed (AD4)
Pin ef (AD5)
Pin eg (AD6)
Pin eh (AD7)
Pin ej (AD8)
0 – 0.2
TOP MENU
PICTURE
LEFT
EJECT
LOAD
PLAY
POWER
MODE
0.6 – 0.82
DISPLAY
SURROUND
DOWN
OPEN/CLOSE
REPEAT
STOP
FILE
1.16 – 1.47
MENU
FLIP
ENTER
PROGRAM
TIME/TEXT
PAUSE
EDIT
1.8 – 2.12
RETURN
DISC
UP
EASY PLAY
SHUFFLE
JOG
SORT
CHANGE
2.48 – 2.7
–
DIRECT
RIGHT
–
ONE/ALL DISCS
ACS ENTER
FOLDER
SEARCH
3.3
–
–
–
–
–
–
–
SACD
DVD
DVD
VCD
CD
GROUP
TITLE
TRACK
CHAP
MULTI
INDEX
ANGLE
NTSC
DISC
HOUR
MIN
SEC
PR
PROGRESSIVE
OGRESSIVE
ALL DISCS
ALL DISCS
SHUFFLE
SHUFFLE
VIDEO
VIDEO
AUDIO
UDIO
MP 3
MP 3
REPEA
REPEAT 1
PGM A- B
PGM A- B
Digital
Digital
;
GROUP TITLE
TRACK
CHAP
DISC
MULTI
INDEX
ANGLE
NTSC
HOUR
MIN
SEC
PROGRESSIVE
VCD
ALL DISCS
SHUFFLE
VIDEO
AUDIO
MP 3
REPEAT 1
PGM A- B
Digital
;
DVD
CD
SACD
6-17
TITLE
GROUP
TRACK
CHAP
DISC
MULTI
INDEX
ANGLE
NTSC
HOUR
MIN
SEC
PROGRESSIVE
VCD
ALL DISCS
SHUFFLE
VIDEO
AUDIO
MP 3
REPEAT 1
PGM A- B
Digital
;
DVD
CD
SACD
GROUP
TITLE
TRACK
CHAP
DISC
MULTI
INDEX
ANGLE
NTSC
HOUR
MIN
SEC
PROGRESSIVE
VCD
ALL DISCS
SHUFFLE
VIDEO
AUDIO
MP 3
REPEAT 1
PGM A- B
Digital
;
DVD
CD
SACD
Key code display (at input of
H
key, Key code: 0Ah)
At input of faulty voltage
When two keys are pressed
2-3-3. Remote Commander Key Name Display and Key
Code Display
2-3-3-1. Transition Keys in Self Check Mode
• Remote commander keys except keys transited in self check
2-3-3-2. Operation and Display
When a key on the remote commander is pressed in the Self Check
mode, the name of that key is displayed on the FLD. Also, the key
name display and the key code display can be switched with the
mode, the name of that key is displayed on the FLD. Also, the key
name display and the key code display can be switched with the
[DISPLAY]
key on the remote commander. “NOTHING” is dis-
played when nothing is entered. Also, VIDEO CD, DVD, and CD
segments turn on when a communication error occurred.
segments turn on when a communication error occurred.
Remote commander key name display (at input of
X
key)
GROUP
TITLE
TRACK
CHAP
DISC
MULTI
INDEX
ANGLE
NTSC
HOUR
MIN
SEC
PROGRESSIVE
VCD
ALL DISCS
SHUFFLE
VIDEO
AUDIO
MP 3
REPEAT 1
PGM A- B
Digital
;
DVD
CD
SACD
GROUP
TITLE
TRACK
CHAP
DISC
MULTI
INDEX
ANGLE
NTSC
HOUR
MIN
SEC
PROGRESSIVE
ALL DISCS
SHUFFLE
VIDEO
AUDIO
MP 3
REPEAT 1
PGM A- B
Digital
;
VCD
DVD
CD
SACD
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