Sony HKDV-900, Руководство по обслуживанию

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2-6 (E)
HKDV-900
8. Rotary encoder test
Set the test item number to “
08
” using the
[+]
/
[_]
button,
and then press the “STORE” button to activate a test.
Check the following operations of each rotary encoder.
(1) LEVEL LED indication test
1. Check to see that the LEVEL LED (U) at the
center of the left side of the rotary encoder lights.
2. Slightly rotate the rotary encoder clockwise to
check that the light is shifted to the upper LEVEL
LED.
3. Rotate the rotary encoder clockwise by 180 d or
more to check that the uppermost (maximum)
LEVEL LED lights.
4. Rotate the rotary encoder counterclockwise by
180
d or more to check that the lowermost (mini-
mum) LEVEL LED lights.
(2) 7SEG LEDs indication test
Rotate each rotary encoder to check to see that the
following values of the rotary encoder are displayed in
hexadecimal on the 7SEG LEDs.
n
The display of the 7SEG LEDs is automatically
switched to the corresponded value of rotating the
rotary encoder by rotating either its knob.
. 7SEG LEDs indication when rotating clockwise:
01
(when rotation starts)
→
FF
(when the knob is
rotated by 180
d
)
→
00
(when the knob is rotated by
180
d
or more)
→
FF
(immediately before the knob
is rotated by 360 d )
. 7SEG LEDs indication when rotating counterclock-
wise:
FF
(when rotation starts)
→
00
(when the knob is
rotated by 180 d )
→
FF
(when the knob is rotated by
180 d or more)
→
00
(immediately before the knob
is rotated by 360
d
)
Check all rotary encoders for the above operation.
n
If the above tests are not operated properly, see Section
2-3-10. “Troubleshooting for Rotary Encoder Test Error”
to clarify the cause.
To quit the test, press the “CANCEL” button. The 7SEG
LEDs display returns to the test item number.
ON
1
S101
2 3 4 5 6 7 8
: Switch position
2-2. Self Diagnostic Mode
7. Switch test
Set the test item number to “
07
” using the
[+]
/
[_]
button,
and then press the “STORE” button to activate a test.
(1) LED built-in pushbutton switch test
Press the LED built-in pushbotton switches on the
front panel to check to see that the LED of each button
lights.
Press the switches again and check to see that the
LEDs goes off.
(2) Pushbutton switch test
Press the pushbotton switches on the front panel (not
including with “CANCEL”) which no LED is built in.
Check to see that the numeric character corresponding
to the pressed switch is displayed on the left 7SEG
LED. (Refer to the following table.)
The pushbotton switches and 7SEG LED display:
Switch Display on left digit
+
0
_
1
STORE
2
LOAD 3
(3) Slide switch test
Remove the top panel, and then set the switches S101-
7 and S101-8 (J-3) on the CP-364 board to ON.
Check to see that a numeric character corresponding to
the switch settings is displayed on the right 7SEG
LED. (Refer to the table below.)
Slide switch settings and 7SEG LED display:
S101-7 S101-8 Display on right digit
ON ON 3
OFF ON
2
ON OFF
1
OFF OFF
0
n
If the above tests are not operated properly, see Section 2-3-
9, “Troubleshooting for Switch Test Error” to clarify the
cause.
To quit the test, press the “CANCEL” button. The 7SEG
LEDs display returns to the test item number.