Test Mode - Sony CDP-XB720 Service Manual

4-1. AF MODE
The following checks can be performed in the AF mode, which is
set by connecting the JW004 (AFADJ) terminal on MAIN
board to the Ground and turning on the power.
• FL tube check
After all segments light up, when the · button is pressed, the
following will be displayed. (Partial lighting 1)
A B C D E F
When the p button is pressed, the following will be displayed.
(partial lighting 2)
2 4
8 10
6
12 14
18 20
16
(Partial lighting 2)
The display will light up as follows (partial lighting 3) when the
≠ AMS ± knob is rotated to the right, and as follows (par-
tial lighting 4) when rotated to the left.
JOG RIGHT
JOG LEFT
When the OPEN/CLOSE § button is pressed, all will light up
again.
• Key check
All buttons have corresponding button numbers. When a button
is pressed, the counter will count up and display the button's num-
ber. However, the counter will only count to "16". It will not count
for buttons already pressed once, but will display the button's
number.
88 TOTAL= 88
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Display of button number
SECTION 4

TEST MODE

(Partial lighting 1)
(Partial lighting 3)
(Partial lighting 4)
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Display of counting
Button No.
Button
Displayed
LANGUAGE
MUSIC SCAN
AUTO SPACE
PEAK SEARCH
PLAY MODE
REPEAT
FADER
TIME EDIT
CLEAR
CHECK
• Remote commander check
When buttons other than the · button are pressed when the
whole display is lit, the display will change to partial lighting 2.
When the "·" button is pressed, the display will light up as
follows.
REMOCON PLAY
4-2. ADJ MODE
The following operations are performed in the ADJ mode, which
is set by connecting the JW003 (ADJ) terminal to the Ground and
turning on the power.
Table of Button Operations in ADJ Mode
The functions of the number buttons are shown in the following
table.
Function of Number Buttons
(With the General Remote Commander)
Button
4 Tracking servo, sled servo off
Tracking servo, sled servo on
9
S curve continuous output check mode
11
* NOTE : Other buttons are not used for servicing and should not
be pressed without a reason.
– 8 –
Button No.
Button
Displayed
0 EDIT/
1 TIME FADE
2 0
3 )
4 P
5
ENTER (AMS)
6 OPEN/
CLOSE §
7
PLAY ·
8 Partial lighting 1
STOP p
9 Partial lighting 2
(Partial lighting 5)
Function
10
11
12
18
20
All lit