Yamaha RX-V440RDS Service Manual Page 37
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RX-V540/RX-V540RDS/HTR-5650/HTR-5650RDS/DSP-AX540
RX-V440/RX-V440RDS/HTR-5640/HTR-5640RDS/DSP-AX440
37
RX-V540/RX-V540RDS/HTR-5650/HTR-5650RDS/DSP-AX540
RX-V440/RX-V440RDS/HTR-5640/HTR-5640RDS/DSP-AX440
IMP SW/POWER LIMIT (Impedance/power limiter
detection)
IMP: 8 or 4 ohm impedance switch setting
PL: Power limiter detection value
The voltage value of pin No. 91 of IC601 is displayed,
using 5V/256 as standard.
When the power is turned on, the impedance of the
speaker being connected is automatically detected,
using the input voltage value of pin No. 91 of IC601.
IMP SW/POWER LIMIT
PORT VthL VthH
No.87 2.53V 3.05V
The port output is controlled by using the input voltage
value of pin No. 91 of IC601.
When higher than VthH, the port output is changed
from L to H.
When lower than VthL, the port output is changed from
H to L.
Input voltage value 0 - 490mV 491mV - 5V
Impedance of speaker 4 ohms 8 ohms
Impedance PORT VthL VthH
8/6 ohms No.87 2.85V 3.37V
4 ohms No.88 1.95V 2.47V
Display (%) K0 K1
0 - 6 SP A INPUT MODE
7 - 13 SP B 6CH INPUT
14 - 21 STEREO EDIT PRESET
22 - 31 PROGRAM FM/AM
32 - 41 PROGRAM TUNING MODE
42 - 53 PRESET PAGE MEMORY
54 - 63 PRESET/TUNING PTY SEEK MODE
64 - 72 PRESET/TUNING PTY SEEK START
73 - 80 TONE SELECT EON
81 - 88 TONE DOWN RDS MODE
89 - 95 TONE UP –
[Table 1]
K0/K1 (Panel key of main unit)
A/D of the key fails to function properly when the standard
value is deviated. In this case, check the constant of
partial pressure resistor, solder condition, etc. Refer to
table 1.
K0/K1
FAN DRIVE TEST (For models so equipped)
HIGH (Not applied to these models.)
FAN DRIVE TEST (For models so equipped)
LOW (Not applied to these models.)
FAN DRIVE TEST （ファン駆動テスト）
FAN DRIVE TEST (For models so equipped)
MID (Not applied to these models.)
FAN DRIVE TEST （ファン駆動テスト）
FAN DRIVE TEST （ファン駆動テスト）
- AV RECEIVER/AV AMPLIFIER 1
- ■ TO SERVICE PERSONNEL 2
- ■ IMPEDANCE SELECTOR 2
- ■ FRONT PANELS 3
- ■ REAR PANELS 5
- ■ REMOTE CONTROL PANELS 13
- ■ SPECIFICATIONS / 参考仕様 14
- • Set Menu Table / セットメニュー 16
- ■ INTERNAL VIEW 17
- 1. トップカバーの外し方 18
- 2. フロントパネルユニットの外し方 18
- 3. DSP P.C.B.の外し方 18
- 4. FUNCTION （1）∼（6）、TUNERの外し方 19
- MF117350 20
- CAUTION! 23
- ● ダイアグ起動時の表示 24
- ● メニュー動作中の表示 25
- DIAG menu selection 26
- SUB-MENU selection 26
- ダイアグメニューの選択 26
- サブメニューの選択 26
- • Details of DIAG menu 27
- ● ダイアグメニュー詳細 27
- ( Digital Audio Data / PCM ) 28
- 2. RAM THROUGH 29
- 4Mbit DRAM 30
- CS49329 is in L/R output 31
- 4. SPEAKERS SET 32
- 5. MARGIN CHECK 33
- 10. AD DATA CHECK/FAN TEST 36
- 11. IF STATUS 38
- 12. DSP RAM CHECK 40
- 13. SD DL CODE 40
- 14. SOFT SW 41
- 15. マイコン情報 42
- ■ AMP ADJUSTMENT / アンプ部調整 43
- ■ DISPLAY DATA 44
- ■ IC DATA 46
- 16bit µ-COM (Main CPU) 47
- IC601 : YSS938 (DSP P.C.B.) 48
- ■ BLOCK DIAGRAM (1/2) 52
- ■ BLOCK DIAGRAM (2/2) 53
- DSP P. C. B 54
- (Lead Type Device) 54
- (Surface Mount Device) 54
- FUNCTION (2) P. C. B 57
- FUNCTION (1) P. C. B 57
- OPERATION (1) P. C. B 64
- VIDEO AUX 66
- STANDBY/ON 66
- HEADPHONE 66
- VIDEO P. C. B 67
- MAIN (1) P. C. B 68
- MAIN (2) P. C. B 69
- MAIN (3) P. C. B 70
- R, K models 74
- ■ PIN CONNECTION DIAGRAM 76
- SCHEMATIC DIAGRAM (DSP) 77
- Function Switch 79
- 123456789 80
- SCHEMATIC DIAGRAM (OPERATION) 83
- SCHEMATIC DIAGRAM (VIDEO) 84
- SCHEMATIC DIAGRAM (MAIN) 85
- SCHEMATIC DIAGRAM (POWER) 87
- PARTS LIST 89
- P.C.B. DSP 90
- P.C.B. FUNCTION 100
- P.C.B. OPERATION 110
- P.C.B. MAIN 114
- P.C.B. POWER 127
- Chip Resistors 132
- 1/4W Type 133
- 1/6W Type 133
- ■ MECHANICAL PARTS 134
- ■ EXPLODED VIEW 134
- ● SCHEMATIC DIAGRAM 138
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