Pioneer-F208-tun-sm电路图 维修手册.pdf

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1、ORDER NO. PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELECTRONICS SERVICE, INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A. PIONEER ELECTRONIC (EUROPE) N.V. Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE. LTD

2、. 253 Alexandra Road, #04-01, Singapore 159936 ? ? ? ? ? ? PIONEER ELECTRONIC CORPORATION 1999 RRV2161 T ZZE JUNE 1999 Printed in Japan FM/AM DIGITAL-SYNTHESIZER TUNER F-208 CONTENTS 1. SAFETY INFORMATION.2 2. EXPLODED VIEWS AND PARTS LIST .3 3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM .6 4. PCB CONNECTI

3、ON DIAGRAM. 10 5. PCB PARTS LIST.14 6. ADJUSTMENT.16 7. GENERAL INFORMATION . 17 7.1 IC .17 8. PANEL FACILITIES AND SPECIFICATIONS. 18 THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S). Type Model F-208 Power Requirement HLOAC220 - 230V SDBOAC110/120 - 127/220/240VWith the voltage sele

4、ctor Remarks STANDBY/ON RF ATT MPX CHARACTER BAND CLASSDIRECT TUNING TUNING MEMORY 12345 67890/10 FM/AM DIGITAL-SYNTHESIZER TUNERX? ? MODE MODE DISPLAY MODE MEMORY SCAN RadioFans.CN 收音机爱 好者资料库 F-208 2 1. SAFETY INFORMATION This service manual is intended for qualified service technicians; it is not

5、meant for the casual do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual. Improperly performed repairs can adversely affect the safety and reliability of the pro

6、duct and may void the warranty. If you are not qualified to perform the repair of this product properly and safely, you should not risk trying to do so and refer the repair to a qualified service technician. WARNING This product contains lead in solder and certain electrical parts contain chemicals

7、which are known to the state of California to cause cancer, birth defects or other reproductive harm. Health to lower the frequency, turn counterclockwise. In the Station Name input mode, the TUNING knob is used to select characters. When presetting a station or selecting a preset station, you can a

8、lso turn this knob to select a desired station number. 5? Operating display Manual tuning mode Auto tuning mode Preset station tuning mode 4? DISPLAY MODE button When in the Preset Station Selection mode, pressing this button changes display indications. If no station names are memorized, this butto

9、n has no function. When no station name is memorized,the DISPLAY MODE button becomes invalid. STANDBY/ON RF ATT MPX CHARACTER BAND CLASSDIRECT TUNING TUNING MEMORY 12345 67890/10 FM/AM DIGITAL-SYNTHESIZER TUNERX? MODE MODE DISPLAY MODE MEMORY SCAN 1 2 3 47890 =- ! 56 F-208 19 =? MPX (multiplex) MODE

10、 button Mode changes as follows each time this button is pressed. This button does not affect AM reception. AUTO: “AUTO”is not displayed. Normally leave in this mode for reception. When a stereo FM broadcast is received, it will be automatically reproduced in stereo sound and the STEREO indicator li

11、ghts up. ? BAND button The button is used to select either FM or AM reception. !? STATION CALL buttons Use these buttons to preset stations and to receive the already preset stations. These are also used when performing direct access tuning. MONO: MONO indicator lights up. To receive stereo broadcas

12、ts in monaural. If there is too much noise during stereo reception of a weak signal, you can reduce the level of noise by switching to MONO. NOTES: This buttons status is preset for each station in station memory. When the signal level is too weak for reception, sound output is automatically muted.

13、If sound is muted when the selected mode is AUTO, switching to MONO lets you hear the broadcast. AUTO MONO -? RF ATT button Set this button to on when receiving strong FM signals (nearby stations) to reduce sound distortion (RF ATT indicator lights). Normally, this button should be set to off. This

14、button does not affect AM reception. NOTE: This buttons status is preset for each station in station memory. STANDBY/ON RF ATT MPX CHARACTER BAND CLASSDIRECT TUNING TUNING MEMORY 12345 67890/10 FM/AM DIGITAL-SYNTHESIZER TUNERX? MODE MODE DISPLAY MODE MEMORY SCAN 7 Front View F-208 20 Operating displ

15、ay 3?Frequency and character display section Band and frequency data is displayed. 4? RF ATT indicator Stays lit while RF ATT button is on. 1? MEMORY indicator Lights when presetting stations. 2? AUTO indicator Lights during auto tuning mode. 5? MONO indicator Stays lit while MPX MODE button is set

16、to MONO. 6? STEREO indicator Lights up when a stereo broadcast is received (the indicator does not light when the MPX MODE button is set to MONO). 7? TUNED indicator Lights when a broadcast is received. AUTO MEMORY RF ATT STEREO MONO TUNED 1 26 45 73 F-208 21 8.2 SPECIFICATIONS FM T-type antenna (AD

17、H7007) AM loop antenna (ATB7009) Audio cord (PDE1249) L=1m Control cord (PDE1247) L=1m Accessories FM tuner section Frequency Range . (HL) 87.5 MHz to 108 MHz (SDB) 87.5 MHz to 108 MHz (Step 50 kHz or 100 kHz) Usable Sensitivity NORMAL . Mono: 13.2 dBf, IHF(1.3 V / 75 ) 50 dB Quieting Sensitivity NO

18、RMAL . Mono: 20.2 dBf, IHF (2.8 V / 75 ) Stereo: 36.2 dBf, IHF (17.7 V / 75 ) Signal-to-Noise Ratio . Mono: 76 dB (at 85 dBf) Stereo: 73 dB (at 85 dBf) Distortion .Stereo: 0.5 % (1 kHz) Alternate Channel Selectivity . 70 dB (400 kHz) Stereo Separation . 40 dB (1 kHz) Frequency Response .1 dB (30 Hz

19、to 15 kHz) Image Response Ratio . 40 dB IF Response Ratio . 90 dB Antenna Input . 75 unbalanced AM tuner section Frequency Range . (HL) 531 kHz to 1,602 kHz (Step 9 kHz) (SDB) 531 kHz to 1,602 kHz (Step 9 kHz) (SDB) 530 kHz to 1,700 kHz (Step 10 kHz) Sensitivity (IHF, Loop antenna) . 350 V / m Selec

20、tivity. 33 dB(9 kHz) Signal-to-Noise Ratio . 51 dB Image Response Ratio . 35 dB IF Response Ratio . 51 dB Antenna. Loop Antenna Audio section Output (Level/Impedance) FM (100 % MOD) . 668 mV / 1k AM (30 % MOD) . 150 mV / 1k Miscellaneous Power Requirements . (HL) AC 220-230 Volts 50 / 60 Hz (SDB) AC

21、 110/120-127/220/240 V (switchable), 50 / 60 Hz Power Consumption . 10 W Power Consumption in standby mode. 1 W Dimensions . 420 (W) x 78 (H) x 287 (D) mm Weight (without package) . 2.7 kg Furnished parts FM T-type antenna .1 AM Loop antenna .1 Audio cord .1 Control cord .1 Operating Instructions .1 NOTE: Specifications and design are subject to possible modifications without notice, due to improvements. Black Red White