Onkyo-HTR320-avr-sm维修电路原理图.pdf
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1、HT-R320 SERVICE MANUALSERVICE MANUAL AV RECEIVER Silver model MODEL HT-R320 Ref. No. 3819 082004 SMDD120V AC, 60Hz RC-479S SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK ON THE SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK. REPLACE THESE CO
2、MPONENTS WITH ONKYO PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL. MAKE LEAKAGE-CURRENT OR RESISTANCE MEASUREMENTS TO DETERMINE THAT EXPOSED PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER. RadioFans.CN 收音机爱 好者资料库 HT-R320 SPECIFICATIONS
3、 Amplifier Section THD(Total Harmonic Distortion): Damping Factor: Input Sensitivity and Impedance: Output Level and Impedance: Frequency Response: Tone Control: SN Ratio: Speaker Impedance: Video Section Input Sensitivity /Output Level and Impedance: Tuner Section AM Tuning Frequency Range: Usable
4、Sensitivity: S/N Ratio: THD: DVD, VIDEO 1, VIDEO 2, VIDEO 3 Video Outputs A/V Output:MONITOR OUT, VIDEO 1 1 (Optical), 1 (Coaxial) DVD, MULTICHANNEL, CD, TAPE, VIDEO 1, VIDEO 2, VIDEO 3 5.1 Specifications and features are subject to change without notice. Power Output: Front L/R: Center Surround L/R
5、 Dynamic Power: 100 W + 100 W 100 W 100 W + 100 W (8 , 20 Hz20 kHz, FTC) 230 W + 230 W (3 , Front) 170 W + 170 W (4 , Front) 115 W + 115 W (8 , Front) 0.08 % (Power Rated) 60 (Front, 1 kHz, 8 ) 200 mV/ 47 k (LINE) 200 mV/ 2.2 k (REC OUT) 10 Hz100 kHz / +0 dB -3 dB (Direct mode) +12 dB, -12 dB, 50 Hz
6、 (BASS) +12 dB, -12 dB, 20 kHz (TREBLE) 100 dB (CD, IHF-A) 8 16 1 Vp-p /75 (Composite) TAPE, VIDEO 1 1 5 + 2 1 530 kHz1710 kHz 30 V 40 dB 0.70 % General Power Supply: Power Consumption: Stand-by Power Consumption: Dimensions (W H D): Weight: AC 120 V, 60 Hz 4.7 A 1.6 W 17-1/8 5-7/8 14-3/4 inches 435
7、 150 374 mm 8.8 kg (19.4 lbs ) FM Tuning Frequency Range: Usable Sensitivity: S/N Ratio: THD: Stereo Separation: Video Inputs A/V Input: Audio Inputs Digital Inputs: Analog Inputs: Multichannel Inputs: Audio Outputs Analog Outputs: Subwoofer Pre Outputs: Speaker Outputs: Phones: 87.5 MHz108.0 MHz St
8、ereo 17.2 dBf 2 V (75 IHF) Mono 11.2 dBf 1 V (75 IHF) Stereo 70 dB (IHF-A) Mono 76 dB (IHF-A) Stereo 0.3 % (1 kHz) Mono 0.2 % (1 kHz) 45 dB ( 1 kHz ) RadioFans.CN 收音机爱 好者资料库 SERVICE PROCEDURES HT-R320 1. Replacing the fuses 2. Safety-check out (Only U.S.A. model) After correcting the original servic
9、e problem perform the following safety check before releasing the set to the customer Connect the insulating-resistance tester between the plug of power supply cord and terminal GND on the back panel. Specifications: More than 10Mohm at 500V This symbol located near the fuse indicates that the fuse
10、used is show operating type, For continued protection against fire hazard, replace with same type fuse, For fuse rating, refer to the marking adjacent to the symbol. Ce symbole indique que le fusible utilise est e lent. Pour une protection permanente, nutiliser que des fusibles de meme type. Ce demi
11、er est indique la qu le present symbol est apposre. 3. To initialize the unit This unit does not require memory preservation batteries. A built-in memory power backup system preserves the contents of memory during power failures and even when the power cord is unplugged. The power cord must be plugg
12、ed in order to charge the backup system. The memory preservation period after the unit has been turned off varies depending on climate and placement of the unit. On average, memory contents are protected over a period of a few weeks after the time the unit has been turned off. This period is shorter
13、 when the unit is exposed to a very humid climate. This device employs a microprocessor to perform various functions and operations. If interference generated by an external power supply, radio wave, or other electrical sauce results in accident which causes the specified operations and functions to
14、 operate abnormally. To perform a result, please follow the procedure below. 1. Press and the hold down the VIDEO 1 button , then press the STANDBY/ON button when the unit is Power ON. 2. After Clear is displayed, the preset memory and each mode stored in the memory, are initialized and will return
15、to the factory settings. 5. Memory Preservation Main microprocessor Q7008. 1. Press and the hold down the DISPLAY button , then press the STANDBY/ON button when the unit is Power ON. Version is displayed on FL display only for 3 seconds. 2. Press the STANDBY/ON button to Power Off. 4. How to check v
16、ersion of microprocessor? Version 04212a ex. REF. NO. F6901 F6901 or F6902 F6902 or F901 F901 or F903 F903 or DESCRIPTION 8A-UL 8A-T/UL-ST2 8A-UL 8A-T/UL-ST2 8A-UL 8A-T/UL-ST2 5A-UL/T-237 5A-T/UL-ST2 PART NO. 252198 252261 252198 252261 252198 252261 252164 252258 REMARKS ! ! ! ! ! ! ! ! OPERATION C
17、HECK-1 DC VOLTAGE DETECTION PROTECTORS CURRENT DETECTION PROTECTORS HT-R320 Test - _ Test - 1-00 FL display Clear Disappears 0.5 sec. FL display Test - _ Test - 4-00 Test - 4-29 Clear Disappears 1. Set the unit to test mode Test-1-00 . 1-1. Press and the hold down the CD button , then press the STAN
18、DBY/ON button when the unit is Power ON. 1-2. Press the DVD button, while the Test - _ is shown. Unit will be in the state of Test-1-00 . 2. Apply DC voltage (+1.5 to +3V) to MULTI CHANNEL (FL, FR, SL, SR, C) terminal, each channel. 3. Check that Protect is shown. 4. Apply DC voltage (-1.5 to -3V) t
19、o MULTI CHANNEL (FL, FR, SL, SR, C) terminal, each channel. 5. Check that Protect is shown. 6. Press the STANDBY/ON button. NOTE1 Limit time to apply voltage is 0.5 to 1.0 seconds each channel. When protection operation does not occur at once, try several times. NOTE2 Dont connect speakers or any lo
20、ad. Dont short speaker terminals. NOTE In the state of test mode Test-4-29 , the pulse waveform output for checking from speaker terminal automatically. Therefore, oscillator is unnecessary. 1. Set the unit to test mode Test-4-29 1-1. Press and the hold down the CD button , then press the STANDBY/ON
21、 button when the unit is Power ON. 1-2. Press the VIDEO 3 button, while the Test - _ is shown. Unit will be in the state of Test-4-00 . 1-3. Repeat and press SPEAKERS B button to the Test-4-29 is shown. 2. Connect the lord resister (3 ohms) to the speaker terminals. 3. Check that the Protect is not
22、shown, and speaker relays not turn OFF. 4. Check the each speaker terminals. 5. Connect the lord resister (1.5 ohms) to the speaker terminals. 6. Check that the Protect is shown, and speaker relays turn OFF immediately. 7. Check the each speaker terminals. 8. Press the STANDBY/ON button. OPERATION C
23、HECK-2 OUTPUT LEVEL & THERMAL DETECTION HT-R320 RL6901 D6904 D6903 RL6902 POWER AMP. PRI.SEC1 Low High +B1 -B1 T901 MAIN TRANSFORMER Low High Q6303 THERMAL SENSOR R6380 THERMAL DETECTION OUTPUT LEVEL DETECTION VOLH/ THPRO Q7008 MAIN MICROPROCESSOR Q6303 SEC1H 23 2 SPEAKER OUT F6901 F6902 Low-voltage
24、 HIGH VOLTAGE MODE LOW VOLTAGE MODE +/- 63.0 V +/- 29.0 V High-voltage Regarding the power supply system of this unit. 1. High-voltage mode Usually, the power supply supplies high voltage to the power amplifier circuit when the relay (RL6901) is turned On. 2. Low-voltage mode When as follows, a powe
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