User manual PIONEER A-207R service manual

[. . . ] STEREO AMPLIFIER Direct Energy MOS VOLUME POWER CD TUNER PHONO LINE TAPE 1 /MD TAPE 2 MONITOR OFF ON A SPEAKERS B BASS TREBLE BALANCE INPUT SELECTOR PHONES LOUDNESS DIRECT TAPE 2 MONITOR ORDER NO. ­ + ­ + MIN MAX L R RRV1912 The illustration shows the A-307R. A-307R A-207R Type MYXJ/EW MYXJ/GR MVXJ SAMXJ SDXJ ­ ­ ­ STEREO AMPLIFIER THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S). Model A-307R A-207R Power Requirement AC220-230V AC220-230V AC220-230V AC110V/120-127V/220V/240V AC110V/120-127V/220V/240V The voltage can be converted by the following method. ­­­­ ­­­­ ­­­­ With the voltage selector With the voltage selector CONTENTS 1. SAFETY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EXPLODED VIEWS AND PARTS LIST . . . . . . . . . . . . . . . . SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] 20 XOUT O Ceramic vibrating and connecting terminal. Pin name I/O Function 24 P51/XCOUT I SPEAKER-A KEY input. RESET 26 P30/INT0 I BACK UP detection pin. 38 P04 I Output error detection pin 39 P05 O MUTING control pin. 42 P52 I TAPE2 KEY input. 26 A-307R, A-207R 7. 2 DISASSEMBLY 1 1 1 ×2 1 1 ×2 10 3 1 2 1 Front Panel 5 5 13 Diagnose the AF Assy. : Be careful not to injure the Front Panel. 11 3 4 ×2 5 ×5 2 Rear Panel Chassis 6 6 6 8 Unhook lead wires. Rear Panel 7 For Service 7 ×3 Chassis 12 Screw for Rear Panel PCB Support 7 ×2 9 ×3 Cutting Pliers 27 28 RIAA ON/OFF D A FUNCTION LOUDNESS Q505 Q501 Q503 DIRECT ON/OFF IC151 2. 8mV /50k PHONO DIRECT ENERGY MOS 37dB TUNER A A VOLUME CD A-307R, A-207R 200mV /50k D A Q509 IC101 LINE 7. 3 BLOCK DIAGRAM TAPE1 /MD Q303 TONE AND BALANCE M VR501 A D UNUSUAL OUTPUT DETECTION Q507 POWER AMP WRLC 39dB PROTECTION RY D 401 RY401 SP-A D RY402 SP-B RY403 H. P B JA501 FUNC MUTE 200mV /1k REC Q337-Q340 UP/DOWN D E F IC751 VR751 VR752 VR601 200mV TAPE2 /50k MONITOR 200mV /1k REC D +BL TO POWER STAGE ­BL +6 CN101 CN102 FROM UNUSUAL OUTPUT DETECTION TO FUNCTION SW D D451 KEY INPUTS VOLUME UP/DOWN DIRECT, LOUDNESS ON/OFF TO µ-COM LED D TO OP AMP RY IC453 IC451 IC452 +19 ­15 µ-COM FUNC MUTE ON/OFF FROM FUNCTION SEL F IC601 D +BH TO VOLTAGE STAGE TO PROTECTION RY ­BH C REGULATOR C T1 S801 FU1 SR INPUT D D454 D455 A-307R, A-207R 8. PANEL FACILITIES AND SPECIFICATIONS 8. 1 PANEL FACILITIES REAR PANEL SPEAKERS R B L SIGNAL GND PHONO TUNER CD LINE TAPE 1/MD REC PLAY TAPE 2 MONITOR AC INLET REC PLAY L R IN IN IN IN OUT IN OUT IN L R R CONTROL OUT A L 1 GND (Turntable ground) terminal 2 PHONO terminals 3 TUNER terminals 4 CD terminals 5 LINE terminals 6 TAPE 1/MD REC (OUT) terminals 7 TAPE 1/MD PLAY (IN) terminals 8 TAPE 2 MONITOR REC (OUT) terminals 9 TAPE 2 MONITOR PLAY (IN) terminals 0 SPEAKERS B terminals (Right channel) - SPEAKERS B terminals (Left channel) = SPEAKERS A terminals (Right channel) ~ SPEAKERS A terminals (Left channel) !CONTROL OUT jack This jack is for output of control signals when operating other components bearing the Î mark with the attached remote control unit. @ AC INLET jack Connect power cord to here and an AC wall socket, or the AC outlet of an audio timer. If you are going to be away from home for a long period of time, disconnect the unit from the wall socket. NOTES: If you use an other power cord than provided, we cannot assume the liabilities in what may occur as a result of it. (The provided power cord has a current capacity of 2. 5 A. ) 29 A-307R, A-207R FRONT PANEL VOLUME STEREO AMPLIFIER POWER CD TUNER PHONO LINE TAPE 1 /MD TAPE 2 MONITOR A SPEAKERS B BASS TREBLE BALANCE INPUT SELECTOR PHONES LOUDNESS DIRECT TAPE 2 MONITOR ­ + ­ + MIN MAX L R The illustration shows the A-307R. 1 POWER (-- OFF/_ ON) switch Press to turn power to the unit ON and OFF. This unit cannot be turned ON and OFF using the remote control unit. 5 TAPE 2 MONITOR button/indicator Use when there is an adaptor component (graphic equalizer, etc. ) or cassette deck connected to the TAPE 2 MONITOR terminals. On : Indicator lights when using the adaptor component or listening to the cassette deck. Off : Indicator goes off when not in use. 2 REMOTE CONTROL SENSOR window 3 VOLUME control Use to adjust the volume level. NOTES: ÷ When no connections are made to the TAPE 2 MONITOR terminals, or when they are not in use, be sure to set this switch to the off position. (No sound will be heard if it is set to the on position. ) ÷ When the TAPE 2 MONITOR indicator is on and the INPUT SELECTOR knob is not set to TAPE 1/MD, the signals which are input through TAPE 2 MONITOR are then output at TAPE 1/MD REC OUT. 4 INPUT SELECTOR knob/indicators Turn the knob clockwise or counterclockwise so that the indicator lights for your desired input source. Turning the knob clockwise causes the lit indicator to right. Turning counterclockwise causes it to left. CD : For compact disc playback with a CD player. TUNER : For AM or FM broadcast reception with a tuner. PHONO : For record playback with a turntable. LINE : Set to this position when listening to the program from a component connected to the LINE terminals. TAPE 1/MD : For playback with a cassette deck or MD recorder connected to TAPE 1/MD terminals. 6 BALANCE control Should normally be left in the center position. Adjust balance if the sound is louder from one of the speakers. [. . . ] 0. 1 % . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 mV Output level/impedance TAPE 1 REC, TAPE 2 MONITOR REC . . . . . 200 mV/1 k Frequency response PHONO (MM) . . . . . . . . . . . . . . . . . . . . . . . . . 20 Hz to 20 kHz, ±0. 5 dB CD, TUNER, LINE, TAPE 1/MD, TAPE 2 MONITOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]