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SAVA-57
SERVICE MANUAL
US Model Canadian Model AEP Model UK Model E Model Australian Model Chinese Model
· TRANSMITTER
· REAR SPEAKER
· FRONT SPEAKER SYSTEM
SPECIFICATIONS
HOME THEATER ACTIVE SPEAKER SYSTEM
MICROFILM
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SECTION 4 TEST MODE
MODE ALL FLUORESCENT INDICATOR TUBES LIGHT When the AC plug is inserted to the power outlet with pressing the MASTER VOL + button, the all fluorescent indicator tubes light. KEY CHECK, LED LIGHTING MODE Setting: 1. Pull out the AC plug from the power outlet and turn the power OFF. 2. Connect the lead wire to TP3 on the KEY board. 3. Insert the AC plug to the power outlet and set to STANDBY mode. 4. Let the lead wire connected in step 1 contact to the ground. 5. All fluorescent indicator tubes light, and enter the key check mode. 6. Pressing any buttons, the number of button will be displayed on the fluorescent indicator tube. 7. After all buttons are pressed, it will be in the STANDBY mode. Button POWER MASTER VOL MASTER VOL + INPUT SURROUND CTR MODE S.WOOFER Button Number 2 3 4 5 6 7 8 LED Color Red Green Red Green Red Green Red
SECTION 5 ELECTRICAL ADJUSTMENT
CARRIER FREQUENCY Adjustment Note: Set the transmitter to the user's environment, connect it to the front speaker, and supply the power. (Refer to Service Note.)
TP5 frequency counter Transmitter board R226 TP6
Procedure: 1. Connect the frequency counter to TP5 and TP6 of the two ends of the resistor (R226) of the TRANSMITTER board. 2. Turn ON the power of the front speaker. 3. Adjust L201 of the TRANSMITTER board, and adjust so that the reading of the frequency counter is 4.3 MHz ± 0.01 MHz. RECEIVING FREQUENCY, MUTING LEVEL adjustment Note: Perform procedure 1 if using FM RF SSG and procedure 2 if not. However, as procedure 2 is a simple procedure, adjustment is not accurate. · Procedure 1 Setting:
FM RF SSG level meter TP7 Receiver board TP102
Note: 1. The LED (D505) lights while pressing each button. The LED lights in red when even number of buttons are pressed, and it lights in green when odd number of buttons are pressed. 2. The LED lights even when the pressed button is pressed again. · Parts Location [KEY BOARD] -- Conductor side --
Receiver board L1
Carrier frequency : 4.3MHz TP8 Modulation : no moduration Output level : 40dB (at 75 open)
CN552 IC503
S506 TP3
R557
Procedure: 1. Connect SSG to TP7 and TP8 of the two ends of the coil (L1) of the RECEIVER board. 2. Set the output level of SSG to 40 dB. 3. Insert the AC plug of the unit to the power outlet and supply the power. 4. Adjust IFT103 of the RECEIVER board, and adjust so that the voltage of both ends of TP102 becomes 0V. (RECEIVING FREQUENCY adjustment) 5. Adjust the output level of SSG to 22 dB. 6. Adjust RV102 until D109 turns green from red. (MUTING LEVEL adjustment)
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· Procedure 2 Note: The adjustment results of this procedure differs according to the distance between the transmitter and rear speaker. Leave ample distance between the transmitter and rear speaker according to the user's using environment when performing the adjustment. Procedure: 1. Connect the transmitter to the front speaker and turn the power supply on. 2. Adjust IFT103 of the RECEIVER board, and adjust so that the voltage of the two ends of TP102 becomes 0V. (RECEIVING FREQUENCY adjustment) 3. Adjust RV102 of the RECEIVER board of the rear speaker until D109 turns green. (MUTING LEVEL adjustment) 4. Turn OFF the power turned on at STEP 1. 5. Check that D109 of the RECEIVER board of the rear speaker becomes red. If green, adjust RV102 so that it turns red, turn ON the power again, and repeat from step 3. 6. After adjusting, check that D109 becomes red when the power of the front speaker is turned OFF and it becomes green when the power is turned ON.
Reference Information: For this adjustment, the reaching distance of the infrared rays increases when the MUTING LEVEL (sensitivity) is raised, but if the power of the front speaker is turned OFF, pop noises are produced from the rear speaker. If the MUTING LEVEL (sensitivity) is dropped on the other hand, pop noises are reduced, but the reaching distance of the infrared rays decreases. Adjust according to the user's using environment.
[RECEIVER BOARD] -- Component side --
JW107 JW108 JW132 JW109 JW110 RECEIVING FREQUENCY & IC104 MUTING LEVEL RV102 MUTING LEVEL TP102 JW111 JW112 JW133 JW113 JW114
TP8 L1 TP7 D1
SCN101
IFT103
RECEIVING FREQUENCY
JW115 JW116 JW117 JW118
JW119 JW120 JW121 JW122
[TRANSMITTER BOARD] -- Component side --
IC202
CN201
L201 R226 TP5 TP6 CARRIER FREQUENCY
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