Yamaha-RXV-795-A-Schematic 电路图 维修手册.pdf

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1、RX-V795a/RDS/HTR-5170/DSP-R795a ABCDEFGHIJKL 1 2 3 4 5 6 7 8 DSP * All voltage are measured with a 10M/DC electric volt meter. * Components having special characteristics are marked Zand must be replaced with parts having specifications equal to those originally installed. * Schematic diagram is sub

2、ject to change without notice. I SCHEMATIC DIAGRAM (DSP) E-65/J-55 Pointt (Pin13 of IC3) V : 2V/divH : 50 nsec/div DC range1 : 1 probe Point y (Pin13 of IC14) V : 2V/divH : 50 nsec/div DC range1 : 1 probe IC5 : M5M51288BKJ-20L RAM LINE INPUT BUFFER LINE ADDRESS DECODER I/O DATA CONTROL CIRCUIT DATA

3、I/O ADDRESS INPUT A0 A1 A2 A3 A4 A5 A6 A7 A8 S1 S2 A9 A10 A11 A12 A13 A14 A15 A16 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 DQ8 18512MEMORY ARRAY 131072X8bit 512X2048 Vcc(5V) GND(0V) COLUMN I/O CIRCUIT COLUMN ADDRESS DECODER COLUMN INPUT BUFFER 16 256 2048 CHIP SELECT CIRCUIT WRITE ENABLE CONTROL INPUT OUTPUT ENA

4、BLE CONTROL INPUT W OE IC2 : HD74HC02FPEL Quad 2 Input NOR Other ICs G IC3: YM3436DK See page E-27/J-23 G IC4: YSS918-F See page E-28/J-24 G IC14: LC87F5164 See page E-31/J-27 IC1 : NJM2904M IC811, 13 : PC4570G2 Dual OP Amp IC7 : AK4320 1 bit D/A Converter IC6 : AK4526 A/D REAR L FRONT L DIGITAL IN

5、DIGITAL IN MAIN L MAIN L CENTER 0 4.9 0 0 4.9 4.9 0 0 4.9 0 4.9 4.9 0 4.9 4.9 4.9 4.9 4.9 4.9 6 3.3 2.4 3.1 2.4 2.4 2.6 0 2.4 0.9 4.7 0.1 0 3.1 0 0 0 0 0 0 0 0 04.8 4.9 0 00.5 00.20.2 0.50 4.9 4.9 0 0 2.4 2.4 4.9 2.3 0 4.9 0 0 0 4.9 0 2.4 2.4 2.4 4.9 0 4.9 0 0 0 0 4.9 0 2.3 0 4.8 4.9 4.8 2.4 0 0 4.8

6、 0 4.9 0 0 0 0 0 00 0 4.8 4.8 2.4 4.8 2.4 2.42.4 00 2.42.4 00 2.42.4 4.8 0 -10.9 4.7 0 4.7 0.2 0 -10.9 0 0 -10.9 0 0 -10.9 0 0 -10.9 0 0 -10.9 0 0 -10.9 0 0 -10.9 0 0 -10.9 0 0 -10.9 0 00.6 0 0 0.6 0 0 11.5 0 0 -11.5 0 0 0 11.5 0 0 0 11.5 0 0 0 -11.5 0 0 11.5 2.4 2.4 2.4 2.4 2.4 2.4 -11.5 -11.5 2.4

7、2.4 2.4 2.4 2.4 2.4 11.5 0 -11.5 0 0 02.4 02.4 2.52.4 2.4 2.4 02.4 2.42.4 2.42.4 02.4 02.4 00 0.5 4.7 0 3.1 2.4 2.4 0 2.4 2.4 0 2.4 2.4 2.4 2.4 2.4 2.4 2.4 0.1 0.1 0.1 0 4.8 4.80 0.9 0.9 0 0 0.1 0.1 0.1 0.1 4.8 2.4 4.9 0 4.9 4.9 2.4 4.9 2.4 0 2.4 2.4 0 0 3.1 0 0 0 2.4 0 3.1 1.5 0 3.1 0 2.4 4.8 4.7 2

8、.4 0.9 0.1 0 0.9 0.9 0 0 0.1 0 0 4.9 4.9 0 2.3 2.6 4.9 0 4.9 4.9 4.9 0 4.9 4.9 0 4.7 0 4.9 0 4.9 0 0 0 0 4.9 4.9 4.9 0 4.9 0 0 0 0 0 0 4.9 2.4 2.3 2.3 4.9 2.6 2.5 2.4 2.4 2.4 2.4 4.9 4.9 2.2 2.2 0 0 0 0 5 0 00 0 0 0 0 0 0 0 0 4.9 4.9 4.9 2.2 0.1 DSP + DIGITAL PRO-LOGIC DTS DECODER DIR RAM DAC P-E66/

9、J56 D-1 P-E66/J56 G-8 P-E69/J59 F-2 5 3 8 2 4 1 6 5 7 13 11 14 12 10 9 8 7 2 3 1 6 4 7 4 6 5 7 1 1 83 2 42 3 5 6 8 IC3 IC4 IC14 RadioFans.CN 收音机爱 好者资料库 RX-V795a/RDS/HTR-5170/DSP-R795a ABCDEFGHIJK 1 2 3 4 5 6 7 8 I SCHEMATIC DIAGRAM (INPUT) E-66/J-56 * All voltage are measured with a 10M/DC electric

10、volt meter. * Components having special characteristics are marked Zand must be replaced with parts having specifications equal to those originally installed. * Schematic diagram is subject to change without notice. INPUT (This waveform is not available by pushing the power switch ON and OFF.) Disco

11、nnect the power cord from the AC outlet. With the POWER ON, dis- connect the A/C power cord. Reconnect the A/C power cord and the above wave- forms will start. 0V Pointe (Pin3 of IC21) V : 2V/divH : 50 nsec/div DC range1 : 1 probe Pointr CH1 : Pin1 of IC21 CH2 : Pin29 of IC21 H : 0.5 sec/divDC range

12、1 : 1 probe V : 2V/div (CH1) V : 2V/div (CH2) FRONT L REAR R MAIN L MAIN L CENTER 43 4 00 0 0 4.9 11.3 -11.5 11.6 11.6 0 0 0 0 0 -11.5 11.6 11.6 0 0 0 0 0 -11.5 4.7 2.0 4.8 4.9 4.9 0 0 4.9 0 0 4.9 4.9 0 4.8 0 4.9 0 0 1.2 0 0.3 0 0.2 0.7 -11.4 0 0 11.2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

13、0 0 0 0 0 11.6 0 0 0 0 0 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 -22.2 0.1 0.1 0.1 0 0 0 0 0.3 0.3 0 21.8 0 00 0 0 0 00 0 21.8000 0 -22.2 00 0 0 0 -22.2 0 -11.5 0 -11.1 0 4.9 0 0 4.9 0 0.3 0 4.9 0 0 4.9 0 4.9 0.1 4.9 4.9 4.9 0 1.2 0.3 1.4 0 4.9 4.5 2.2 4.7 4.9 4.9 4.7 4.9 4.9 0

14、 0 0 0 4.9 4.9 0 4.9 4.9 0 4.9 4.9 4.9 0 0 0 0 0 4.9 4.9 0 0 4.9 4.9 4.5 4.9 4.7 4.9 11.6 11.6 0 0 0 0 0 PHONO MM EQ AMP INPUT SELECTOR TAPE MONITOR P-E69/J59 TO VIDEO(1) C-2 P-E67/J67 D-8 P-E65/J55 B-8 P-E68/J58 H-2 P-E71/J61 : NOT USED : USED CIRCUIT CHANGES BY MARKET. A-5 P-E69/J59 A-5 P-E69/J59

15、I-3 P-E65/J55 J-4 P-E72/J62 (J,U,C,A,L,R,T models) P-E73 (B,G models) H-5 8 1 3 2 6 5 4 7 5 6 8 7 2 3 4 1 1 7 4 5 6 8 3 2 2 3 6 5 7 8 4 1 5 3 2 1 8 6 4 7 3 6 5 4 7 2 1 8 IC21 RadioFans.CN 收音机爱 好者资料库 RX-V795a/RDS/HTR-5170/DSP-R795a ABCDEFGHIJKL 1 2 3 4 5 6 7 8 INPUT & VIDEO I SCHEMATIC DIAGRAM (INPUT

16、 & VIDEO) * All voltage are measured with a 10M/DC electric volt meter. * Components having special characteristics are marked Zand must be replaced with parts having specifications equal to those originally installed. * Schematic diagram is subject to change without notice. E-67/J-57 IC17 : LC78211

17、 Analog Function Switch IC11 : NJM2068MD IC12, 20 : PC4570G2 IC13, 15, 16 : M5220FP Dual OP Amp IC18 : LC78213 Analog Function Switch IC19 : LC78212 Analog Function Switch IC402404, 407, 408 : LA7956 Video Switch IC401 : TC4053BP Triple 2-Channel Analog Multiplexers/ Demultiplexers Other ICs G IC21:

18、 HD6433397A97F See page E-36/J-30 G IC406: LC74781-9626 See page E-35/J-29 IC405 : PD4066BC Quad Analog Switch/Multiplexer 16 VDD LOGIC LEVEL CONVERTER 12OX 7 VEE 6INH OUT C IN 13IXOUT C IN 2OY OUT C IN 1IYOUT C IN 5OZ OUT C IN 3IZOUT C IN 4Z-COMMON 15 14X-COMMON Y-COMMON 9C 10B 11A 8 VSS REAR L CEN

19、TER 5.0 5.7 5.6 5.611.1 0 0 11.1 0 0 5.0 0 0.1 1.1 1.8 0.7 0 0 8.8 8.8 9.3 9.3 9.8 0 0 9.8 0 0.5 0.5 1.1 2.72.72.7 3.4 0.1 0.3 11.1 1.5 2.1 2.5 2.5 0.5 0.5 0 5.0 0 4.4 4.9 1.9 1.1 4.3 4.3 5.0 1.1 000 2.5 0 11.1 3.8 3.8 3.8 5.3 3.8 3.8 3.8 5.3 0 11.5 11.3 11.1 0 11.5 11.3 0 0 11.1 11.3 3.8 3.8 11.1 3

20、.8 0 3.8 11.5 11.3 5.6 2.4 05.0 5.0 5.0 0 5.0 0 2.0 5.0 1.1 0 1.1 2.5 0 0.1 2.4 2.4 4.9 4.9 0 5.0 11.1 3.8 0 3.8 11.5 11.3 5.7 11.1 3.8 0 3.8 11.5 11.3 5.7 1.11.5 2.2 1.0 0 0.5 0.5 5.0 5.0 0 0 0 11.1 5.6 5.6 11.1 11.5 0 5.0 11.1 5.7 0 11.1 5.6 0.7 0.7 0.7 0 23.8 23.8 0.7 0.7 1.3 AC12.6 SUB POWER SUP

21、PLY S-VIDEO AMP & SELECTOR SUPERIMPOSE REGULATOR SYNC SIGNAL DETECTOR SPEAKER RELAY DRIVE P-E66/J56 D-8 P-E69/J59 I-2 P-E70/J60 I-6 TO MAIN (1) TO MAIN (5) P-E68/J58 A-1 P-E71/J61 TO MAIN (2) G-2 P-E70/J60 TO MAIN (1) I-5 CIRCUIT CHANGES BY MARKET. : NOT USED : USED IC406 RadioFans.CN 收音机爱 好者资料库 RX-

22、V795a/RDS/HTR-5170/DSP-R795a ABCDEFGHIJK 1 2 3 4 5 6 7 8 I SCHEMATIC DIAGRAM (OPERATION) * All voltage are measured with a 10M/DC electric volt meter. * Components having special characteristics are marked Zand must be replaced with parts having specifications equal to those originally installed. *

23、Schematic diagram is subject to change without notice. E-68/J-58 OPERATION IC102 : LC75710NE FL Display Driver Other IC G IC102 : LC75712E See page E-35 -27.9 -27.9 -27.9 -27.9 -27.9 -27.9 -29.6 0 0 2.3 2.4 4.7 4.9 0 4.9 0 0 4.9 4.9 -27.9 -27.9 -27.9 -27.9 -27.9 -27.9 -27.9 -28.0 -27.8 -27.8 -29.6 -

24、22.5 -28.8 4.7 -28.1 4.7 -27.8 -28.1 4.74.7 -27.8 0 -23.6 -28.9 -28.9 -13.3 -13.3 0 5.65.68.84.9 4.9 5.6 0.6 0.6 0 4.4 4.9 -11.4 8.8 8.1 5.76.3 4.8 0 0 0 0 0 8.8 4.9 4.9 4.9 -22.3 -22.3 -23.6 -28.8 -28.1 -28.0 -28.0 -27.9 -27.9 -27.9 -27.9 -27.9 -27.9 -27.9 -27.9 -27.9 -27.9 -27.9 -27.9 -27.9 FULL M

25、UTE DRIVE DISPLAY DRIVE SYSTEM CONTROL RESET CIRCUIT CHANGES BY MARKET. P-E66/J56 H-8 P-E67/J57 I-6 P-E70/J60 I-4 : NOT USED RX-V795a/RDS/HTR-5170/DSP-R795a ABCDEFGHIJKL 1 2 3 4 5 6 7 8 * All voltage are measured with a 10M/DC electric volt meter. * Components having special characteristics are mark

26、ed Zand must be replaced with parts having specifications equal to those originally installed. * Schematic diagram is subject to change without notice. E-69/J-59 I SCHEMATIC DIAGRAM (OPERATION) OPERATION IC202 : PC4570HA Dual OP-Amp IC251253, 257, 258 : PC4570G2 Dual OP-Amp IC201 : NJM2068LD Dual OP

27、 Amp IN1 2 +IN1 3 VCC 4 +IN2 5 IN2 6 OUT2 7 +VCC 8 OUT1 1 + + VO1 2 Vm1 3 +Vm1 4 VEE 5 +Vm2 6 Vm2 7 VO2 8 VCC 9 VCC 1 1 + + 2 IC254 : LB1641 Motor Driver IC255, 256 : TC9299P Electric Controlled Volume IC351 : TC74HCU04AP Hex Inverters IC352 : HD74HC00P Quadruple 2-input Positive NAND Gates IC353 :

28、HD74HC153P Dual 4 to 1 Data Selectors REAR L MAIN DIGITAL IN CENTER 0.3 0 0 0 4.8 0 4.3 4.8 0 4.3 4.8 0 11.3 0 0 0 0 0 -11.3 11.3 0 0 0 11.3 0 0 0 -11.3 0 0 0 11.3 11.5 0 0 0 -11.4 0 0 0 11.5 0 0 0 0 0 0 -11.4 0 0 0 -11.3 0 0 0 -11.3 11.3 0 0 0 0 0 0 -11.3 0 0 0 0 4.8 00 4.34.8 0 0 00.3 4.8 4.8 0 4.

29、8 4.8 0 4.3 00 0 4.8 3.1 2.5 4.8 4.8 4.8 0 0 0 0 0 0 4.9 4.3 4.3 4.8 0 4.8 0 0 0 0 0 0 0 0 -11.3 0 0 0 0 0 0 0 11.3 0 0 0 0 0 0 0 11.3 0 0 11.3 0 0 0 0 11.3 0 0.1 2.0 0.1 0 4.8 0.5 0.7 1.20 4.5 4.5 10.4 10.4 0.7 0.5 SPEAKER SETTING CONTROL SPEAKER LEVEL CONTROL MOTOR DRIVE VOLUME AMP DIGITAL SELECTO

30、R CIRCUIT CHANGES BY MARKET. P-E66/J56 E-1 P-E67/J57 to VIDEO (1) G-8 P-E65/J55 B-1 P-E70/J60 A-5 P-E71/J61 A-4 P-E66/J56 G-1 P-E66/J56 C-8 : NOT USED 3 2 8 1 6 5 4 7 1 83 6 5 4 7 6 5 4 7 2 1 8 3 2 6 4 7 5 6 2 3 8 1 2 3 8 1 4 7 5 RX-V795a/RDS/HTR-5170/DSP-R795a ABCDEFGHIJK 1 2 3 4 5 6 7 8 * All volt

31、age are measured with a 10M/DC electric volt meter. * Components having special characteristics are marked Zand must be replaced with parts having specifications equal to those originally installed. * Schematic diagram is subject to change without notice. E-70/J-60 I SCHEMATIC DIAGRAM (MAIN) Each vo

32、ltage given here represents that in the top side of IMPEDANCE SELECTOR, but the one in the parentheses ( ) is that in the bottom side. MAIN MAIN L CENTER -48.9 (-40.5) 48.8 (40.5) 0 1.2 0.7 0.6 0 0.7 24.1 0 -42.2 -29.6 -30.2 0 0 -48.1 0.6 -0.4 -1.0 0.9 0.4 0.9 48.8 (40.5) 0 0.4 48.8 (40.5) 0 -0.4 -4

33、8.9 (-40.5) -0.4 -1.0 -48.9 (-40.5) 0 48.6 48.8 (40.5) 0 0 48.6 -48.1 -48.6 -1.0 13.6 0 -48.8 0 0 -48.0 0.6 -0.4 -1.0 1.0 0.4 1.0 48.8 (40.5) 0 0.4 48.8 (40.5) -0.5 -1.0 -48.9 (-40.5) 0 -0.5 -48.9 (-40.5) 0 0 48.4 -48.0 -48.5 -1.0 -48.8 0 0 -11.4 0 0 -11.4 0 0 -11.4 0 0-11.4 0 -48.1 0.6 -0.4 -1.0 1.

34、0 0.4 1.0 48.8 (40.5) 0 0.4 48.8 (40.5) -0.5 -1.0 -48.9 (-40.5) 0 -0.5 -48.9 (-40.5) 0 0 48.5 -48.1 -48.6 -1.0 -48.8 0 0 0-11.4 SPEAKER RELAY DRIVE CENTER POWER AMP MAIN R POWER AMP MAIN L POWER AMP MUTING MUTING MUTING B POWER SUPPLY CIRCUIT CHANGES BY MARKET. P-E71/J61 G-5 P-E71/J61 G-5 P-E67/J57

35、TO VIDEO (2) I-5 P-E71/J61 G-5 P-E68/J58 B-1 P-E69/J59 E-5 P-E67/J57 H-7 : NOT USED RX-V795a/RDS/HTR-5170/DSP-R795a ABCDEFGHIJKL 1 2 3 4 5 6 7 8 MAIN * All voltage are measured with a 10M/DC electric volt meter. * Components having special characteristics are marked Zand must be replaced with parts

36、having specifications equal to those originally installed. * Schematic diagram is subject to change without notice. E-71/J-61 I SCHEMATIC DIAGRAM (MAIN) Each voltage given here represents that in the top side of IMPEDANCE SELECTOR, but the one in the parentheses ( ) is that in the bottom side. REAR

37、L REAR L MAIN CENTER -32.6 31.8 -19.9 19.0 010.5 0 0 -48.4 0.6 0.4 -1.0 0.9 0.4 0.9 48.8 (40.5) 0 0.4 48.8 (40.5) -0.5 -1.0 -48.9 (-40.5) 0 0 0 -0.5 -48.9 (-40.5) 0 0 48.4 -48.4 -48.9 -1.0 -49.1 0 0 -11.4 0 -48.4 0.6 -48.4 -1.0 -48.8 -0.4 -1.0 -48.9 (-40.5) 0.4 0.9 48.8 (40.5) 0 0 0 48.4 0.4 48.8 (4

38、0.5) 31.924.0 24.6 -24.9 -16.5 -8.2 0 0 5.00.5 0 12.119.0 0 12.019.0 0 -11.7-19.9 16.4 8.2 0 24.4 24.4 0 0 24.0 0 0 24.0 24.0 0 0 0 -0.4 -48.9 (-40.5) -1.0 0.9 -0.4 -49.1 0 0 0 -11.4 -11.4 0 0 AC75.8 AC51.6 AC62.6 AC31.6 AC9.7 AC6.5 REAR L POWER AMP REAR R POWER AMP REGULATOR MUTING MUTING MUTING CI

39、RCUIT CHANGES BY MARKET. P-E71/J61 G-6 P-E71/J61 G-7 P-E70/J60 I-4 P-E66/J56 H-1 P-E69/J59 E-6 P-E70/J60 I-4 P-E67/J57 H-5 P-E70/J60 I-7 : NOT USED RX-V795a/HTR-5170/DSP-R795a ABCDEFGHIJK 1 2 3 4 5 6 7 8 I SCHEMATIC DIAGRAM (TUNER) E-72/J-62 Each voltage given here represents that in the FM (98. 1MH

40、z, STEREO) reception mode but the one in the parentheses ( ) is that in the AM (1080kHz, MANL) reception mode. * All voltage are measured with a 10M/DC electric volt meter. * Components having special characteristics are marked Zand must be replaced with parts having specifications equal to those or

41、iginally installed. * Schematic diagram is subject to change without notice. TUNER GPK1 : ENV-172C8G1R (V2909100) U, C, R, T modelsGPK1 : ENV-172A4G1 (V2716700) A, L modelsGPK1 : ENV-142C2G1R (V2909000) J model IC1 : LA1266 AM/FM IF IC2 : LC72131 PLL Controller IC3 : LA3401 MPX V : 2V/divH : 0.1sec/

42、div 2VSAMPLE 0.1us Point1 (Pin22 of IC2) DC range1 : 1 probe 0V FM FM AM AM 10.4 (0) 10.5 (11.5) 0.1 (10.6) 5.1 (5.0) (4.4) (0) 5.1 (5.2) 7.7 (7.6) 2.4(1.1) 2.4 (1.1) 2.4 (1.1) 0 (0) 11.0 (11.1) 11.0 (11.1) 11.0 (11.1) 0 (0) 3.9(3.7) 2.3 (2.2) 0 (2.1) 3.0 (2.8) 3.4(2.1) 3.9(3.5) 3.9(3.5) (1.9) (3.5)

43、 5.011.4 (11.5) 5.7 (5.7) 5.7 (5.7) 0 (0) 2.4 (0) 4.9(5.0) 0(2.5) (0)2.4 4.9 (5.0) (1.0) 1.0 (1.0) 1.0 (5.0)4.5 (0)0 (0)0 0.1 10.6 (0)0 (0)0 (0.2)11.4 (0)0 (0)0 (0)0 (0)0 (2.5) (2.5)2.4 0 (11.5) (11.5)11.4 11.4 (0.2) (1.5) 3.9 0 (10.5) 1.5 2.4(1.1) (2.8)0 (2.2) 2.6 (2.0) 1.5 1.5 11.0 2.4 (11.1) 3.0

44、(2.8) (2.1) 3.1(3.1) 3.1(3.1) 3.1(3.1) 3.1(3.1) 3.0(3.0) 3.1(3.1) 3.1(3.1) 3.0(3.0) 3.1(3.1) 0 (6.9) 11.1 (11.2) 3.4 (3.6) 2.8(7.0) 2.8(5.2) 2.8(5.2) 2.8 (9.1) 2.8 (2.8) 0(0) 4.9 (0) 4.9(5.0) 0(0) 02.8 (9.1) 0 (0) 2.8 (9.1) 4.9 (4.9) 0(0) 0 (0) 4.4 (5.2) 1 2.5 MONAURAL DISTORTION ADJ. SIGNAL METER A

45、DJ. DISCRIMINATOR BALANCE ADJ. SEPARATION ADJ. (9.4) 9.3 0(0) AM SENSITIVITY 87.5MHz 98.0MHz 108.0MHz 1.9V 4.5V 7.8V 531KHz 1080KHz 1611KHz 1.3V 5.0V 7.3V AM FM VT (EX only) FM (J only) AM 7.3V 5.0V 1.3V 1611KHz 1080KHz 531KHz 8.1V 4.1V 1.6V 90.0MHz 83.0MHz 76.0MHz REGULATOR PLL MPXAM/FM IF CIRCUIT

46、CHANGES BY MARKET. bottom view TO INPUT (1) E-8 P-E66/J56 : NOT USED : USED RX-V795aRDS ABCDEFGHIJKL 1 2 3 4 5 6 7 8 TUNER E-73 I SCHEMATIC DIAGRAM (TUNER) Each voltage given here represents that in the FM (98. 1MHz, STEREO) reception mode but the one in the parentheses ( ) is that in the AM (1080kH

47、z, MANL) reception mode. IC4 : LC72720N RDS Decoder & Controller GPK1 : ENV-172A4G1 (V2716700) * All voltage are measured with a 10M/DC electric volt meter. * Components having special characteristics are marked Zand must be replaced with parts having specifications equal to those originally install

48、ed. * Schematic diagram is subject to change without notice. IC1 : LA1266 AM/FM IF IC2 : LC72131 PLL Controller IC3 : LA3401 MPX SAMPLE 50us2V2V V : 2V/divH : 50nsec/div Point1 (Pin22 of IC2) DC range1 : 1 probe 0V SAMPLE 0.1us2V V : 2V/divH : 0.1sec/div Point2 (Pin12 of IC4) DC range1 : 1 probe 0V

49、AM FM AM FM (0)0 1.5 (2.0) 1.5 2.7(2.3) 0(2.9) (1.1) 2.4 1.5(1.9) (10.6) 0 (3.5) 3.9 (3.5) 3.9 (2.2) 3.1 11.2 SIGNAL METER ADJ. (6.9) 0 3.1(3.1) 5.1(5.1) 3.1(3.1) 3.1(3.1) 5.1 (5.1) 3.1(3.1) 3.2(3.2) 3.1(3.1) 3.1(3.1) 0 0.5 (4.5) (0) (0) 4.9 (0)0 (2.8)2.8 (9.2)2.8 (5.5)2.8 (5.5)2.8 (7.3)2.8 (2.0)(11.3) 3.4 (1.5) (9.2) 2.8 (0) 0 (2.1) 2.5 (2.8) 3.1 (11.2) 11.0 2.6 3.1 (2.8) (2.2) (2.3)2.3 (3.7)3.8 (9.2) 2.8 (0) 0 (11.2) (0)0 (11.2)11.0 (11.2)11.1 (11.2) 2.4 11.1 (0)0 2.4 (1.1) (1.1) 2.4 (1.1) 2.4 (2.4)2.5(2.5) (0)0 (0)0 (0)0 (0)0 (0)0 (0.2)11.5 (0)0 (10.6)0.1 (0)0 4