Test Mode; Af Mode - Sony CDP-XA20ES Service Manual

Compact disc player
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4-1. AF MODE

Connect the TP19 (AFADJ) on the BD board to the ground and
turn on the power supply.
The AF mode is then activated and the following check can be
made.
4-1-1. Fluorescent Indicator Tube Check
After confirming display of all on, keep pressing the following
button, and the following display is attained.
" (PLAY) button
P (PAUSE) button
2
6
12
16
A track number on FL display tube increases if = AMS +
knob is rotated in + direction, or decreases in = direction.
Keep pressing the §OPEN/CLOSE button, and all on display is
attained again.
4-1-2. Key Check
All buttons are assigned with numbers respectively, and when each
button is pressed, it is counted and its number is displayed. Up to
"16" can be counted.
A button pressed once is not further counted but the number is
displayed. (Table 4-1)
count display
SECTION 4

TEST MODE

(Display: 01)
4
8
10
14
18
20
(Display: 02)
button number
display
Button
Display
TIME
PLAY
MODE
AUTO
SPACE
CHECK
CLEAR
FADER
0
)
4-1-3. Remote Commander Check
All buttons are assigned with numbers respectively.
If a button is kept pressed, its button number is displayed on the
FL display tube of main unit. (Table 4-2)
– 11 –
Table 4-1.
Button
PUSH
09
ENTER
EDIT/
10
TIME FADE
18
REPEAT
PEAK
19
SEARCH
20
p
21
(
22
P
§
23
OPEN/CLOSE
button number
display
Display
24
27
28
29
33
01
02
all light
up

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