Adcom-GTP506-pre-sm维修电路图 手册.pdf
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1、details you can hear SERVICE MANUAL STEREO TUNER PRE-AMPLIFIER GTP-506 TABLE OF CONTENTS Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3 Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-18 IC Block Diagram . . . . . . . . . . . . . . . . . . . . .19-22 Wiring D
2、iagram . . . . . . . . . . . . . . . . . . . . . .23-24 PCB Layout . . . . . . . . . . . . . . . . . . . . . . . . .25-34 Schematic Diagram . . . . . . . . . . . . . . . . . . .35-50 Technical Specification . . . . . . . . . . . . . . . . .51-52 10 TIMBER LANE MARLBORD N.J. 07746, USA PHONE: (732) 6
3、83-2356 FAX: (732) 683-2358 web: RadioFans.CN 2 ADJUSTMENTGTP-506 Preparation 1. INPUT - FM mono:1kHz, 75kHz devi., 60dB/V - FM stereo:1kHz, 67.5kHz devi., 60dB/V Pilot signal 19kHz 7.5kHz devi. - AM:400Hz, 30%mod. 1. FM ADJUSTMENT 2. OUTPUTS - Connect the non-inductive type resistor of 8 ohms to al
4、l speaker terminals otherwise noted. Item FM IF/RF Stereo Distortion Stereo Separation Muting Level Signal output Step 1DC voltmeterL941 0100mV 3 Distortion analyzer Distortion analyzer Oscilloscope Oscilloscope L942 R956 R941 Minimum Minimum 2AC voltmeter IFT on the front end IFE on the front end M
5、aximum Maximum Connection of instrument Fig.1 Fig.2 Fig.2 Fig.1 Channel L or R 1kHz 99.0MHz 1kHz 75kHz devi. 65dBf (60dB) 99.0MHz Ext. mod. 65dBf (60dB) FM SG output Stereo mod- ulator output Tuning frequency 99.0MHz 99.0MHz Channel L or R 1kHz 99.0MHz Ext. mod. 65dBf (60dB) 99.0MHz 1KHz 75KHz devi
6、33dB 99.0MHz mod.65dBf (60dB) 99.0MHz 18dB 99.0MHz 99.0MHz Pilot Suppression Signal Strength Indicator Minimum 8 bars just lit VTVM VFD Signal Bars L903 FOR L L904 FOR R R951 Channel L or R pilot on signal Fig.2 Fig.1 99.0MHz 99.0MHz Output indicator Adjustment point Adjust for Remarks FM MUTE/MODE
7、switch: ON/AUTO Repeat the steps 1 to 3 until no fur- ther adjustment is necessary. FM MUTE/MODE switch: ON/AUTO Dont turn more than +/-180 Repeat stereo distortion and stereo separation alignment until THD at minimum and separation at maximum. Adjust such that output just unmute 2. AM ADJUSTMENT 12
8、0V model Step 1 2 3 530kHz 600kHz 990kHz 600kHz 400Hz 30% mod. 60dB/m AM SG output Tuning frequency Output indicator Adjustment point 600kHz 400Hz 30% mod. 60dB/m AC voltmeter AC voltmeter Digital DC voltmeter L972 OSC coil on RF block M971 OSC coil on RF block M971 Adjust for 1.350.2V Maximum Maxim
9、um Step 1 2 3 522kHz or 531kHz 603kHz 999kHz 600kHz 400Hz 30% mod. 60dB/m AM SG output Tuning frequency Output indicator Adjustment point 600kHz 400Hz 30% mod. 60dB/m AC voltmeter AC voltmeter Digital DC voltmeter L972 OSC coil on RF block M971 OSC coil on RF block M971 Adjust for 1.30.2V (522kHz) 1
10、.350.2V (531kHz) Maximum Maximum 230V model and worldwide models Reference Specification FM tuned voltage: 87.5MHz108.00MHz More than 1.2vLess than 10v AM tuned voltage: 530KHz1710KHz 1.30.2Less than 9.0v Reference Specification FM tuned voltage: 87.5MHz108.00MHz More than 1.2vLess than 10v AM tuned
11、 voltage: 522KHz1611KHz 1.30.2Less than 9.0v (230V model) AM tuned voltage: 531KHz1602KHz 1.30.2Less than 9.0v (Worldwide model) RadioFans.CN 3 ADJUSTMENTGTP-506 3. FM MEASUREMENT Fig. 1 Fig. 2 4. RDS MEASUREMENT Fig. 3 5. AM MEASUREMENT Fig. 4 6. ADJUSTMENT POINTS FM SINGAL GENERATOR ANTENNA TERMIN
12、AL ANTENNA TERMINAL DISTORTION ANALYZER DISTORTION ANALYZER AC VOLTMETER OSCILLOSCOPE AC VOLTMETER OR OSCILLOSCOPE AC VOLTMETER OR OSCILLOSCOPE OUTPUT TERMINAL OUTPUT TERMINAL L R ANTENNA TERMINAL ANTENNA TERMINAL ANTENNA TERMINAL AM LOOP ANTENNA (Accessory) AM LOOP ANTENNA 60cm DIGITAL MILLIVOLT ME
13、TER VT FM SIGNAL GENERATOR AM SIGNAL GENERATOR FM SIGNAL GENERATOR RDS GENERATOR OSCILLO- SCOPE TP701 FM STEREO GENERATOR TP-141 DC MILLIVOLT METER UNIT UNIT UNIT UNIT R951 FM SIGNAL STRENGTH FRONT END IFT M901 L942 FM IF L941 L972 AM IF L903 L904 R956 STEREO SEPARATION P901 R941 MUTING L971 OSCRF R
14、adioFans.CN IR INPUT 1 ASSEMBLY 1200IR INPUT 1 ASSEMBLYPCB-A0190C-IR1 METAL MATERIALS 1201L-BRACKET4152-0451-0 12023X6MM B-TITE (BLK.ZN)2954-3006-3000 1203SCREW M3X10 (BLK)2904-3010-3000 1204M3 NUT2640-3022-0540 1206ME 2*8 4.0MM BK/RH JHC023-002954-2008-3000 PCB BOARD 1205PCB RM2/RM3/TUNER/MISC. A01
15、90C1724-660A-0001 WAFER J501A6P ST. WAFER P=2.5 COULOMB2102-061S-004 JACKS M501DIN 5P 180DEG SOCKET2113-1682-0 M502PHONE JACK D3.5 BK JY-3537-01-1402113-1179-0 M5034P TERMINAL BLOCK2113-1668-0 IR INPUT 2 ASSEMBLY 1300IR INPUT 2 ASSEMBLYPCB-A0190C-IR2 METAL MATERIALS 1301L-BRACKET4152-0451-0 13023X6M
16、M B-TITE (BLK.ZN)2954-3006-3000 1303SCREW M3X10 (BLK)2904-3010-3000 1304M3 NUT2640-3022-0540 1306ME 2*8 4.0MM BK/RH JHC023-002954-2008-3000 PCB BOARD 1305PCB RM2/RM3/TUNER/MISC. A0190C1724-660A-0001 CAPACITORS C5101CE 16V 10F 20% RL 4x7157D-106M-5-GM C5102CE 16V 10F 20% RL 4x7157D-106M-5-GM WAFER J5
17、02AWAFER 10P P2.5 ST. COULOMB2102-101S-004 JACKS M506DIN 5P 180DEG SOCKET2113-1682-0 M507PHONE JACK D3.5 BK JY-3537-01-1402113-1179-0 M5084P TERMINAL BLOCK2113-1668-0 M510DIN 5P 180DEG SOCKET2113-1682-0 M511PHONE JACK D3.5 BK JY-3537-01-1402113-1179-0 M5124P TERMINAL BLOCK2113-1668-0 ICs U5101, U510
18、2IC NJM78L05A 8263130-0640-0 REGULATOR ASSEMBLY 2300REGULATOR ASSEMBLYPCB-A0190C-REG PCB BOARD 2301PCB RM2/RM3/TUNER/MISC. A0190C1724-660A-0001 ICs U111IC 7812H 12V REG, T0220F3130-2520-2 U115IC 7805 REG 5V 1.5A3130-2020-3 REPEATER ASSEMBLY 1600REPEATER ASSEMBLYPCB-A0190C-REP PCB BOARD 1601PCB RM2/R
19、M3/TUNER/MISC. A0190C1724-660A-0001 4 PARTS LISTGTP-506 REF NO.DESCRIPTIONPART NO. RadioFans.CN 5 PARTS LISTGTP-506 WAFER J503AWAFER 8P P2.5 ST.2102-081S-004 JACKS M520-M524PHONE JACK D3.5 BK JY-3537-01-1402113-1179-0 METAL MATERIALS M525,M526BRACKET, GROUNDING4132-6221-0 RESISTORS R508,R513,R521RCF
20、 1/4W 150R 5% AT4705-151J-2 R524,R525RCF 1/4W 150R 5% AT4705-151J-2 ROOM ASSEMBLY 1700ROOM ASSEMBLYPCB-A0190C-RM PCB BOARD 1701PCB RM2/RM3/TUNER/MISC. A0190C1724-660A-0001 CAPACITORS C301,C302CC 50V 47pF 5% 0805 1.2x 2.0150F-470J-J-BD C303,C304CE 50V 10F 20% RL 4x7157F-106M-5-GM C305,C306CTC 0/30 22
21、pF 5% 0805 1.2X2.515CG-220J-J-BD C307,C308CE 25V 10F 20% RL 4X7157E-106M-5-GM C309,C310CE 25V 4.7F 20% RL 4x7157E-475M-5-GM C311CM 50V 4700pF 10% RL 5x5153F-472K-5-II C312CM 50V 0.056F 5% RL 7.5X9.5153F-563J-5-NR C313CM 50V 4700pF 10% RL 5x5153F-472K-5-II C314CM 50V 0.056F 5% RL153F-563J-5-NR C315,C
22、316CM 50V 4700pF 10% RL 5x5153F-472K-5-II C317,C318CP 50V 47pF 5% RL 5.5x10158F-470J-5-JS C319,C320CE 25V 10F 20% RL 4X7157E-106M-5-GM C321,C322CE 25V 4.7F 20% RL 4x7157E-475M-5-GM C323CE 25V 10F 20% RL 4X7157E-106M-5-GM C324-C327CC 50V 0.1F 10% 0805 1.2X2.0150F-104K-J-BD C328,C329CM 50V 0.056F 5% R
23、L153F-563J-5-NR C350,C351CE 25V 10F 20% RL 4X7157E-106M-5-GM C430,C431CC 50V 100pF 5% 0805 1.2x2.0150F-101J-J-BD DIODE D309RLS-73 DIODE4840-1080-3 WAFERS/SOCKETS J311ASOCKET (PCB/PCB) 16P P2.0 RA2101-1601-0 J313ASOCKET (PCB/PCB) 4P P2.0 RA2101-1671-0 J314AWAFER 4P P2.5 RIGHT2102-041R-004 U1113 PIN S
24、T.WAFER P=2.5 COLOMB2102-031S-004 U1153 PIN ST.WAFER P=2.5 COLOMB2101-031S-004 TRANSISTORS Q307,Q308TR KTC3875Y4853-875Y-3 Q309TR KTA1504Y4851-504Y-3 Q310TR FET J1124860-8770-0 Q311-Q314TR 2SC2878 (A,B) RL4860-0770-5 RESISTORS R313,R314RMG 1/10W 1K 1% 08054720-102A-J R315,R316RMG 1/10W 47K 5% 080547
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