SONY MULTI CHANNEL AV RECEIVER - STR-DA4300ES – Test modes – XM factory test mode – Special menu mode – Amplifier bias adjustment – Audio system repair and service

                                                Category: Audio System repair and Service 

Contents of this article 

• Special mode Access
• How to access Test modes 
• Amplifier bias setting 

SONY STR-DA4300ES 

TEST MODE

MEMORY CLEARING MODE
All preset contents are cleared when this mode is activated. Use this mode before returning the product to clients upon completion of repair.
Procedure:
1. While pressing the [TONE MODE] and [DMPORT] buttons, press the [POWER] button to turn on the main power.
2. The message “MEMORY CLEARING***” appears and the memories are reset to the default values.
3. When done, the message “MEMORY CLEARED*” appears.
FLUORESCENT INDICATOR TUBE PATTERN CHECK MODE
All fluorescent segments are tested. When this test is activated, all segments turn on at the same time, then each segment turns on one after another.
Procedure:
1. While pressing the [MOVIE] and [DMPORT] buttons, press the [POWER] button to turn on the main power.
2. All segments and all LEDs turn on.
SOUND FIELD CLEAR MODE
The preset sound field is cleared when this mode is activated. Use this mode before returning the product to clients upon completion of repair.
Procedure:
1. While pressing the [MUSIC] button, press the [POWER] button to turn on the main power.
2. The message “S. F. Initialize” appears and initialization is performed.
TUNER AM STEP CHANGE (9 kHz/10 kHz) MODE
Either the 9 kHz step or 10 kHz step can be selected for the AM channel step.
Procedure:
1. Press the [POWER] button to turn on the main power.
2. Turn the [INPUT SELECTOR] dial to select the “AM”.
3. Press the [POWER] button to turn off the main power.
4. While pressing the [TUNING MODE] button, press the [POWER] button to turn on the main power.
5. Either the message “AM 9kHz Step” or “AM 10kHz Step” appears, select the desired step.
COMMAND MODE CHANGE MODE
The command mode of the remote-commander which this set receives can be changed.
Procedure:
1. While pressing the [2CH/A. DIRECT] button, press the [POWER] button to turn on the main power.
2. Either the message “COMMAND MODE [AV1]” or “COMMAND MODE [AV2]” appears. Select the desired mode.
SF LOCK ON/OFF CHANGE MODE
Procedure:
1. While pressing the [MUSIC] and [DMPORT] buttons, press the [POWER] button to turn on the main power.
2. Either the message “SF LOCK [OFF]” or “SF LOCK [ON]” appears.

XM FACTORY TEST MODE
Mode to confirm operation of XM. Doing display of ID of XM antenna and output of audio signal that XM antenna generates, it is confirmed that there are no probrems in the communication of the XM antenna and the tranmission of the audio signal.
Procedure:
1. The XM antenna was connected, while pressing the [TUNING MODE] and [MOVIE] buttons, press the [POWER] button to turn on the main power.
2. Whenever the [DISPLAY] button is pressed, the output of the audio signal of 1 kHz L/R, 20 Hz L/R, 5 kHz L/R, muting, 1 kHz L and 1kHz R are switched.
SIRIUS FACTORY TEST MODE
Mode to confirm operation of SIRIUS. Doing display of ID of SIRIUS antenna and output of audio signal that SIRIUS antenna generates, it is confirmed that there are no probrems in the communication of the SIRIUS antenna and the tranmission of the audio signal.
Procedure:
1. The SIRIUS antenna was connected, while pressing the [TUNING MODE] and [A.F.D.] buttons, press the [POWER] button to turn on the main power.
2. Whenever the [DISPLAY] button is pressed, the output of the audio signal of 1 kHz L/R, 20 Hz L/R, 5 kHz L/R, muting, 1 kHz L and 1 kHz R are switched.

DIGITAL MEIDA PORT TEST
Procedure:
1. Connect the DMPORT check jig (P/N: J-2501-309-A) with the DMPORT jack (CN8003) on the TUNER board.
2. While pressing the [A.F.D.] and [DMPORT] buttons, press the [POWER] button to turn on the main power.
3. The message “DMPORT OK.” appears on the fluorescent indicator tube and enter the digital media port test mode. (Confirmation of communication line)
When “NO DETECT”, “UART NG” and “UART TO” are displayed on the fluorescent indicator tube, confirm the connection of the DMPORT check jig, and enter the mode again.
Each time the NEXT  button on the remote commander is pressed, the connect check and adaptor version check are switched.
Press the PREVIOUS button on the remote commander, connected confirmation of the DMPORT check jig is done again.
4. To a pinjack of the DMPORT check jig input information relevant to audio signal (sine-wave 1.0V rms) and composite video signal (white 100% 1.0Vp-p, color bar, etc.).
5. Confirm the output of speakers and monitor TV. (Confirmation of analog signal)
6. To exit from this mode, press the STOP  button on the remote.

HISTORY MODE
The state that the set is used is memorized.
Procedure:
1. While pressing the [MUSIC] and [MEMORY/ENTER] buttons, press the [POWER] button to turn on the power and “HISTORY MODE” is displayed.
2. Each time the UP/DOWN key of remote commander is pressed, the item is switched in order.

SPECIAL MENU MODE
Procedure:
1. Press the [POWER] button to turn on the main power, then while pressing the [TONE MODE] button, press the [A.F.D.], [2CH/A. DIRECT], [MUSIC], [MOVIE] button in order, the message “MENU SPECIALIZED!” appears.
2. Press the UP/DOWN  button of the remote commander, the message “<<< SPECIAL >>>” appears.
3. Press the RIGHT  button of the remote commander, the item is appears.
4. Each time the UP/DOWN  button of the remote commander is pressed, the item is switched in order as follows. Some items can change the content. Display the cursor by pressing the RIGHT  button of the remote commander, and changing the content by pressing the UP/DOWN  button of the remote commander, and fix the content by pressing the LEFT  button of the remote commander when you want to change the content of the item.
5. To release from this mode, while pressing the [TONE MODE] button, press the [A.F.D.], [2CH/A. DIRECT], [MUSIC], [MOVIE] button in order again, the message “MENU SPECIALIZED OFF” appears.

BIAS ALIGNMENT ADJUSTMENT
Note: Afer 10 minutes or more have passed since the power supply was turned on, this adjustment is done.
Connection:

CN1561 (CN1611, CN1761, CN1861) pin 1, CN1561 (CN1761, CN1861) pin 3
CN1561 (CN1611, CN1761, CN1861) pin 2, CN1561 (CN1761, CN1861) pin 4

Procedure:
1. Connect a digital voltmeter to the CN1561 (CN1611, CN1761,
CN1861).
2. Press the [POWER] button to turn on the main power.
3. Adjust the RV1501 (RV1551, RV1601, RV1701, RV1751, RV1801, RV1851) so that the digital voltmeter reading is 5 Mv to 20 mV.