Sony HCD-HDX277WC Service Manual page 24

HCD-HDX275/HDX277WC/HDX279W/HDX475/HDX576WF/HDX675
Ver. 1.1
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AUTOMATIC ACOUSTIC FIELD CALIBRATION MICRO-
PHONE TEST MODE
Procedure:
1. Press the [ / ] button to turn the power on.
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2. Insert ECM-AC2 supplied as an accessory into the AUDIO IN/
A.CAL MIC jack.
3. While pressing the [ ] and [
S
the [VOLUME] dial in the direction of (+).
4. Confi rm that the following are shown on the display panel.
1 The JACK inserted/non-inserted detection display and the
STEREO/MONO detection display.
2 Presence of DIGITAL voice input to the microcomputer.
(OK: input, NG: no input)
3 The value of the MIC input to the microcomputer. (shouwn
"255h")
* * * * *
1 2
1 "NON" : Not detected
"ST" : STEREO
"MN" : MIN
2 OK : input
NG : no input
3 0-255 (Changes in real time)
5. To exit this mode, press two buttons [
TE
L 13942296513
ously, turn the [VOLUME] dial in the direction of (+).
DEMO PLAY OUT
It is a mode to release the demonstration reproduct by the dedi-
cated demonstration disc.
Procedure:
1. During playback the DEMO disc, press the [
tons for fi ve seconds simultaneously.
2. The message "DEMO OFF" is displayed, a mode to reproduct
the demonstration is released.
VOLUME TEST MODE
Procedure:
1. Press the [ / ] button to turn the power on.
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2. Press three buttons [ ], [
l
3. The message "VOLUME MAX" is displayed, when the [VOL-
UME] dial is turned in the direction of (+).
The message "VOLUME MIN" is displayed, when the [VOL-
UME] dial is turned in the direction of (–).
4. To exit from this mode, press the [
off.
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] buttons simultaneously, turn
A
* * *
3
] and [ ] simultane-
S A
] and [ ] but-
s H
] and [ ] simultaneously.
H L
/ ] button to turn the set
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8
PROTECTION FACTOR (SD DETECTION/DC DETEC-
TION) IDENTIFICATION TEST MODE
When an error is detected, the fl orescent indicator tube alternately
displays
"PROTECTOR" h "PUSH POWER".
Press the [ / ] button.
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* Buttons other than the [
"STANDBY" blinks three times on the fl orescent indicator tube.
The protection release state (POWER OFF) is established.
(No fl orescent indicator tube display)
Press the [ / ] button twice.
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The power to the system turns on, and the normal operation is es-
tablished. (Restore)
During the protection state:
1. If the AC plug is connected or disconnected during the protec-
tion state, the protection state is released, and the normal op-
eration is established. (The protection state is not maintained)
2. The protection factor is displayed by pressing the [FUNC-
TION], [ ] and [
A L
protection state. (during the "PROTECTOR" h "PUSH
POWER" display)
When SD is detected: Repeats
"SD DETECT" h "PROTECTOR".
When DC is detected: Repeats
"DC DETECT" h "PROTECTOR".
SD detection:
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3 6 7 1 3
When the "L" output from the SD (shutdown) port on the
S-MASTER POWER Driver Shutdown and voltage descent
(15V or less) of 30V power supply (PVDD) are detected.
DC detection:
When the "L" output from the power/speaker error detection
circuit (DC detection port) is detected for two seconds continu-
ally, the power system other than that of the fl orescent indica-
tor tube is turned off, and the protection state is established.
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2 9 9 4 2 8
/ ] button are invalid.
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] buttons at the same time during the
1 5 0 5 8 2 9 9 4
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