Yamaha-RXA-720-Service-Manual-Part-2电路原理图.pdf
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1、P2. PROTECTION HISTORY This menu is used to display the history of protection function. All history of protection function will be erased by pressing the “STRAIGHT” key. * Numeric values in the figure are given as reference only. S1. FIRMWARE UPDATE Not for service. S1-1 F / W U P D A T E ? S2. SET
2、INFORMATION The model name and destination of this unit are displayed. S2-1. MODEL The model name of this unit is displayed. S2-1 M D L : V 6 7 3 2 5 5 Not for service. Model name V673 : RX-V673 6065 : HTR-6065 A720 : RX-A720 P2-1. History 1 H: Displayed when the voltage is HIGHER than upper limit.
3、L: Displayed when the voltage is LOWER than lower limit. xxx: A/D conversion value of voltage at the moment when the protection function worked. (Reference voltage: 3.3 V=255) P2-2. History 2 P2-3. History 3 P2-4. History 4 P2-1 1 s t : P S 2 0 0 0 L P2-2 2 n d : T M P 1 0 0 0 L P2-3 3 r d : D C 0 0
4、 0 L P2-4 N o P r t 61 RX-V673/HTR-6065/RX-A720 RX-V673/HTR-6065/ RX-A720 S2-2 D E S T : U 2 8 A/D conversion value Destination S2-2. DESTINATION The destination of this unit is displayed. S3. FACTORY PRESET This menu is used to reserve/inhibit initialization of the back-up IC (EEPROM: IC82 on DIGIT
5、AL P.C.B.). S 3 - 1 PRESET:INH S 3 - 1 PRESET:RSRV S3-1. PRESET INHIBIT (Initialization inhibited) Initialization of the back-up IC is not executed. Select this sub-menu to protect the values set by the user. S3-1. PRESET RESERVED (Initialization reserved) Initialization of the back-up IC is reserve
6、d. (Actual initialization is executed when the power is turned on next.) To reset to the original factory settings or to reset the backup IC, select this sub-menu and press the “MAIN ZONE ” key to turn off the power. CAUTION: Before setting to the PRESET RESERVED, write down the existing preset memo
7、ry content of the tuner. (This is because setting to the PRESET RESERVED will cause the user memory content to be erased.) DestinationJUCR (R, S)TKABG (B, G, F)L (L, H) A/D conversion value (3.3 V=255) 0 1213 3940 6768 9293 115116 140141 169199 221222 244 S2-3 D B G : 2 5 5 S2-4 N R C : 0 S2-3. DEBU
8、G Not for service. S2-4. NET RESTART COUNTER Not for service. 62 RX-V673/HTR-6065/RX-A720 RX-V673/HTR-6065/ RX-A720 S4. ROM VERSION/CHECKSUM The firmware version and checksum values are displayed. The checksum is obtained by adding the data at every 8-bit and expressing the result as a hexadecimal n
9、otation. * Numeric values in the figure are given as reference only. S 4 - 1 SYS-VER. 1 . 1 0 S 4 - 2 VER.0004 0 S 4 - 3 SUM.F0EA S 4 - 4 FR-V.000 2 9 S 4 - 5 FR-S.D2A 0 S 4 - 6 S-VER.00 4 1 S 4 - 7 S-SUM.99 2 2 4 5 E F S 4 - 8 D1-V. 1 . 0 6 r 3 S 4 - 9 D1-S.47C D 4 9 C 3 S 4 - 1 0 INVALID I T E M S
10、4-1. SYSTEM VERSION The firmware version is displayed. S4-2. MICROPROCESSOR VERSION The firmware version of MICROPROCESSOR (IC83 on DIGITAL P.C.B.) is displayed. S4-3. MICROPROCESSOR CHECKSUM The checksum value of MICROPROCESSOR (IC83 on DIGITAL P.C.B.) is displayed. S4-4. FLASH ROM VERSION The firm
11、ware version of FLASH ROM (IC77 on DIGITAL P.C.B.) is displayed. S4-5. FLASH ROM CHECKSUM The checksum value of FLASH ROM (IC77 on DIGITAL P.C.B.) is displayed. S4-6. NETWORK MICROPROCESSOR VERSION The firmware version of Network microprocessor (IC951 on DIGITAL P.C.B.) is displayed. S4-7. NETWORK M
12、ICROPROCESSOR CHECKSUM The checksum value of Network microprocessor (IC951 on DIGITAL P.C.B.) is displayed. S4-8. DSP1 VERSION The firmware version of DSP1 (IC921 on DIGITAL P.C.B.) is displayed. S4-9. DSP1 CHECKSUM The checksum value of DSP1 (IC921 on DIGITAL P.C.B.) is displayed. S4-10. INVALID IT
13、EM Not for service. 63 RX-V673/HTR-6065/RX-A720 RX-V673/HTR-6065/ RX-A720 S 4 - 1 1 INVALID ITE M S 4 - 1 2 G-V.0000061 3 6 S 4 - 1 3 FPGA-G-V. 1 8 S 4 - 1 4 FPGA-S-V. 1 2 S 4 - 1 5 FPGA-H-V. 6 S 4 - 1 6 INVALID ITE M S 4 - 1 7 INVALID ITE M S4-11. INVALID ITEM Not for service. S4-12. GUI VERSION Th
14、e firmware version of GUI data is displayed. S4-13. FPGA GUI VERSION The firmware version of GUI section in FPGA (IC50 on DIGITAL P.C.B.) is displayed. S4-14. FPGA SD (Standard Definition) VERSION The firmware version of SD I/P scaler section in FPGA (IC50 on DIGITAL P.C.B.) is displayed. S4-15. FPG
15、A HD (High Definition) VERSION The firmware version of HD I/P scaler section in FPGA (IC50 on DIGITAL P.C.B.) is displayed. S4-16. INVALID ITEM Not for service. S4-17. INVALID ITEM Not for service. 64 RX-V673/HTR-6065/RX-A720 RX-V673/HTR-6065/ RX-A720 POWER AMPLIFIER ADJUSTMENT 1. Right after power
16、is turned on, confirm that the voltage across the terminals of R1152 (SURROUND BACK Rch), R1154 (SURROUND Rch), R1150 (FRONT Rch), R1148 (CENTER), R1149 (FRONT Lch), R1153 (SURROUND Lch) and R1151 (SURROUND BACK Lch) are within the confines of 0.1 mV to 10 mV. 2. If measured voltage exceeds 10 mV, o
17、pen (cut off) R1104 (SURROUND BACK Rch), R1106 (SURROUND Rch), R1102 (FRONT Rch), R1100 (CENTER), R1101 (FRONT Lch), R1105 (SURROUND Lch) and R1103 (SURROUND BACK Lch), and then reconfirm the voltage. Attention If the measured voltage exceeds 10 mV after repairing the power amplifier, check other pa
18、rts again for any possible defect before cutting the resistor. 3. Confirm that the voltage is within the confines of 0.2 mV to 15 mV after 60 minutes. 0.1 mV 10 mV (DC) R1104 (SURROUND BACK Rch) R1106 (SURROUND Rch) R1102 (FRONT Rch) R1100 (CENTER) R1101 (FRONT Lch) R1105 (SURROUND Lch) R1103 (SURRO
19、UND BACK Lch) R1152 (SURROUND BACK Rch) R1154 (SURROUND Rch) R1150 (FRONT Rch) R1148 (CENTER) R1149 (FRONT Lch) R1153 (SURROUND Lch) R1151 (SURROUND BACK Lch) Open (cut off) Front side MAIN (1) P.C.B. R1154 R1153R1152R1151 R1150R1149 R1148 R1106 R1105 R1104 R1100 R1101 R1103 R1102 65 RX-V673/HTR-606
20、5/RX-A720 RX-V673/HTR-6065/ RX-A720 DISPLAY DATA RX-V673/HTR-6065 Note : 1) F1, F2 . Filament pin 2) NP . No pin 3) NX . No extend pin 4) 1G-18G . Grid pin Pin No. Connection Pin No.69 F2NX 68 67 NP 66 NP 65 P1 64 P2 63 P3 62 P4 61 P5 60 P6 59 P7 58 P8 57 P9 56 P10 55 P11 54 P12 53 P13 52 P14 51 P15
21、 50 P16 49 P17 48 P18 47 P19 46 P20 45 P21 44 P22 43 P23 42 P24 41 P25 40 P26 39 P27 38 P28 37 P29 34 P32 33 P33 32 P34 31 P35 30 P36 29 28 NXNX 27 NX 26 NX 25 NX 24 NX 23 NX 22 18G 21 17G 20 16G 19 15G 18 14G 17 13G 16 12G 15 11G 14 10G 13 9G 12 8G 11 7G 10 6G 9 5G 8 4G 7 3G 6 2G 5 1G 4 NP 3 NP 36
22、P30 35 P31 21 F1NX Connection PIN CONNECTION GRID ASSIGNMENT 2G1G3G4G5G6G7G11G10G9G8G12G13G14G 15G17G16G17G18G 1-12-13-14-15-1 1-2 1-3 1-4 1-5 1-6 1-7 2-2 2-3 2-4 2-5 2-6 2-7 3-2 3-3 3-4 3-5 3-6 3-7 4-2 4-3 4-4 4-5 4-6 4-7 5-2 5-3 5-4 5-5 5-6 5-7 S8S9S7S5S15S5 S13 (1G14G) (15G) PATTERN AREA S1 S12S6
23、 1a1a1a2a2a2a2a1a S10S11 S2 S3 S3 S2 S4 g d a f e b c (18G16G) d a f e b c p nr j h gm k 169 V4001 : 18-MT-11GNK (OPERATION P.C.B.) 66 RX-V673/HTR-6065/RX-A720 RX-V673/HTR-6065/ RX-A720 ANODE CONNECTION 1G14G 1-1 2-1 3-1 4-1 5-1 1-2 2-2 3-2 4-2 5-2 1-3 2-3 3-3 4-3 5-3 1-4 2-4 3-4 4-4 5-4 1-5 2-5 3-5
24、 4-5 5-5 1-6 2-6 3-6 4-6 5-6 1-7 2-7 3-7 4-7 5-7 S1 18G 1a 1h 1j 1k 1b 1f 1m 1g 1c 1e 1r 1p 1n 1d 2a 2h 2j 2k 2b 2f 2m 2g 2c 2e 2r 2p 2n 2d S12 S10 S11 15G S5 S7 1d 2d S2 1e 2e S3 1c 2c S4 1g 2g 1f 2f 1b 2b 1a 2a S6 S13 16G 1a 1h 1j 1k 1b 1f 1m 1g 1c 1e 1r 1p 1n 1d 2a 2h 2j 2k 2b 2f 2m 2g 2c 2e 2r 2
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- Yamaha RXA 720 Service Manual Part 电路 原理图