Sony HT-MT500, Service Manual

Page: 28 / 66

HT-MT500/MT501
28
TOUCH-SENSOR DEBUG
It can inspect the sensitivity of the touch key.
If the operation in the touch key at the “PANEL TEST” (on page
27) was insecure, check the sensitivity of the touch key in this
mode.
Procedure:
1. Touch the [
1
] button to turn the power on.
2. Press the buttons on the remote commander in the order of [
x
]
→ [DISPLAY] → [OPTION] → [
V
].
3. The message “STT” blinks on the front panel display and enter
the touch-sensor debug mode.
STT
Blinks
4. Change the display by pressing the [
v
] button three times on
the remote commander, and check the blinking of character of
“DIFF”.
Not used for the servicing
Not used for the servicing
Not used for the servicing
Blinks
CRC
DEV
STT
DIFF
5. In the state of step 4, press the [ ] button on the remote com-
mander and enter the DIFF mode, and display the “----” on the
front panel display.
– – – –
6. In the state of step 5, while each touch key is touching, the
displayed the numeral near “255” on the front panel display.
Note: If the 2 digits numeral such as “80” is displayed on the front panel
display, the sensitivity of the touch key lacks.
Disassembled the main unit, and check whether there is no space
between the TOUCH board and the top cabinet.
Releasing method:
Press the [
1
] button on the remote commander and return to the
normal mode.
AMP TEST
It can perform the AMP setting and measurement.
Procedure:
1. Touch the [
1
] button to turn the power on.
2. Press the buttons on the remote commander in the order of [
x
]
→ [DISPLAY] → [
2
–] → [
V
].
3. The message “MSURE” is displayed on the front panel display
and enter the AMP setting and measurement mode.
MSURE
4. Each time the [DIMMER] button on the remote commander is
pressed, the swap mode changes from FULL → THRU → F2S
→ F2SB → F2CW in this order, and returns to the “FULL”
setting.
Display Output speaker
FULL The front L/R input is output to all speakers.
THRU
The front L/R input is output to front L/R
speaker.
F2S Not output to the speaker in this unit.
F2SB Not output to the speaker in this unit.
F2CW
The front L/R input is output to subwoofer
speaker.
5. Each time the [
%
] button on the remote commander is pressed,
volume setting is changed.
V. MSM
V. N
The setting “V.MSM”, touch the [VOL +]/[VOL –] buttons,
the message is changed with “MIN”
↔ “VOL 1” ↔ “VOL18”
↔ “MAX” on the front panel display and volume setting is
changed.
Note:
The setting “V.N” is normal volume mode.
VOL 1
VOL18
MIN
MAX
6. Each time the [CLEAR AUDIO+] button on the remote com-
mander is pressed, VACS on/off setting is changed.
VAON
VAOFF
Releasing method:
Touch the [
1
] button and return to the normal mode.