Sharp GF-4646 Service Manual Download Page 4 | Manualshive

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Figure 4 BLOCK DIAGRAM

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Summary of Contents for GF-4646

Page 1: ...6 AC 240V 50 60 Hz DC 9V UM SUM 1 type x 6 10 cm 4 woofer x 2 Ceramic type tweeter x 2 M P O 3 9W 1 95W 1 95W AC operation PMPO IOW 5W 5W AC operation MPO 7 2W 3 6 3 6W AC operation TAPE RECORDER Tape Compact cassette tape Frequency response 50Hz 10 OOOHz Signal noise ratio 45dB Input sensitivity and impedance External mic 600 ohms Loaded impedance Headphones 8 ohms 25 ohms RADIO Frequency range F...

Page 2: ... Control 8 Balance Control 9 Tuning Control 10 Telescopic Rod Antenna 11 Built in Microphone R ch 12 Headphones Jack 13 14 15 16 17 18 19 20 21 22 23 Figure 2 l AC Power Supply Socket Cassette Holder Record Button Rewind Button Playback Button Fast forward Button Stop Button Eject Button Beat Cancel Switch External Microphone Jacks Battery Compartment Lid 21 2 2 2 3 Figure 2 2 AC POWER SUPPLY CORD...

Page 3: ...moved n MAIN P W B REMOVAL Refer to Figure 3 3 I Remove the eleven screws 0 2 Remove the LED P W B from the two stoppers then the main P W B can be removed from the back cabinet POWER P W B REMOVAL Refer to Figure 3 3 1 Remove the three screws 0 2 Remove the battery spring then the power P W B can be removed from the back cabinet Figure 3 l a Figure 3 2 Figure 3 3 DIAL CORD STRINGING 1 Turn the dr...

Page 4: ... 1 Ripple Filter Figure 4 BLOCK DIAGRAM 4 ...

Page 5: ...2 to radio position AM IF RF ALIGNMENT l Set the signal generator to produce a signal of 400H2 30 AM modulated l For adjustments in steps 4 see Note1 STEP EAND S T A G E QUEN S E T T M E N T T E S T FRE D I A L A D J U S T REMARKS CY ING IF As shown in Figure 5 2 make connection of instruments I 1 I I I I 1 1 I I 1 I RF As shown in Fiqure 5 3 make connection of instruments 0 Repeat steps 2 3 4 and...

Page 6: ...gure 6 4 FM DUMMY VP1 I 10 7 MH oscILLOSCOPE S Cuwe FM SWEEP GENERATOR ITPZI lTP5l Figure 6 l ELECTRONlC VOLTMETER Figure 6 2 FM STEREO ITPl SIGNAL GENERATOR Tele3COpbC IC3 lTP61 FRERUENCY Bee Figure 641 LTPll ITP71 DUMMY Figure 6 3 q T Tm Figure 6 5 ALIGNMENT POINTS NOTES ON SCHEMATIC DIAGRAM 1 Resistor l Unless otherwise specified all resistance in ohms K 1000 ohms 2 Capacitor Unless otherwise s...

Page 7: ...ERASE HEAD 7 RECORO PLAYBACK HEAD AM BAR ANTENNA 1 2 3 4 5 6 A C 1 2 3 4 5 6 7 Figure 7 WIRING ...

Page 8: ...6 7 8 9 10 11 12 SF203 TWEETER R ch 7 E F I I Al MOTOOR L G H i J 6 7 8 9 10 11 I 12 WIRING SIDE OF P W BOARD 8 ...

Page 9: ...5 6 7 1 0401 ZSC945AK RIPPLE FILTER 1 0301 2SC945AK BIAS OSC H Specifications or wiring diagrams of this model are subject to change for improvement without prior notice 1 2 3 4 5 6 7 9 Figure 9 SCHEMATIC DIABf ...

Page 10: ...7 8 9 10 I 11 12 A I I I 1 I I I I INPUT 1 I I t I I I 4 i cn L OUTP N i 8 56 1 5 I C 1 D i I I I E F 2 i G X945AK PPLE FILTER IATIC DIABRAM ...

Page 11: ...1 I 2 3 4 5 6 I D E F G H id 135 i imm 1 2 3 4 5 6 Figure 11 CABINET EXPLODED VIEW ll ...

Page 12: ...1 2 I 3 I 4 5 I F H TOP VIEW BOTTOM VIEW I 1 2 3 4 5 6 Figure 12 MECHANISM EXPLODED VIEW 12 A B C D E F G H ...

Page 13: ...g the safety of the set Be sure to replace these parts with specified ones for marntaining the safety and performance of the set CODE AT501 92LPT 201 A 92LPT 199A Power fGF 4646 Power GF4646A A B AC A A AC AC AB LAC REF NO CFl CF3 vc 2 vc3 4 TC1 2 TC5 8 VRI VRIOI VRl02 VRIOS PART NO DESCRIPTION FILTERS CODE RFILF0080AFZZ Ceramic FM IF 10 7MHz A D RFILA0074AFZZ Ceramic AM IF 455kHz AG CONTROLS RVCR...

Page 14: ... A A B A 8 A A A A A B A B A B A B A A A A A B 14 A A REF NO PART NO DESCRIPTION CODE C301 302 VCKZPUlHB271K 27OPF 5OV 10 Ceramic c303 VCQPKV2AAl83J O O18MFD lOOV r5 AB Polypropylene c304 VCTYPUlEXB23K 0 082MFD 25V rlO AB Semiconductor c305 VCTYPUlEX563K O O56MFD 25V rlO AB C306 c307 c401 Semiconductor VCTYPUlEX152K O O015MFD 25V flO A A Semiconductor VCKZPUlHB561 K 56OPF 5OV 10 Ceramic AA VCTYPUl...

Page 15: ...HOLDl97A 92LLID197A 92LPINT197A 92LMEC197HNLOl 92LKNOB185A 92LKNOBl97A Front Cabinet with Dial Scale Plate Back Cabinet GF 4646 Back Cabinet fGF4646Aj Cassette Holder Lid Battery Compartment Dial Pointer Handle Knob Tuning Control Knob Tone Control Volume Control Knob Function Selector Band Selector Cover Power Transformer Spacer Tuning Shaft Frame Wheel Dial Cord Boss Drum Joint Spacer Handle Lev...

Page 16: ...201 2655600 Regional Offices Distribution Centers 2 Sharp Plaza Paramus New Jersey 0 7 6 5 2 201 265 5600 20600 S Alameda St Carson Calif 9 0 8 1 0 213 637 9488 4 3 0 E Plainfield R d Countryside Illinois 6 0 5 2 5 312 482 9292 U S Subsidiary of Sharp Corporation Osaka Japan Parts Centers P O Box 664 Paramus New Jersey 0 7 6 5 2 201 265 5600 P O B o x 2 0 3 9 4 Long Beach Calif 90801 2 13 637 9488...

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