Yamaha RX-V440RDS Service Manual Page 25
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- Table of contents
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RX-V540/RX-V540RDS/HTR-5650/HTR-5650RDS/DSP-AX540
RX-V440/RX-V440RDS/HTR-5640/HTR-5640RDS/DSP-AX440
25
RX-V540/RX-V540RDS/HTR-5650/HTR-5650RDS/DSP-AX540
RX-V440/RX-V440RDS/HTR-5640/HTR-5640RDS/DSP-AX440
When there is a history of protection
function due to abnormal DC output
Version (1 alphabet)
When there is a history of protection
function due to excessive heat sink
temperature
Version (1 alphabet)
Voltage display in %
Cause: DC output of the power amplifier is abnormal.
Turning on the power without correcting the abnormality
will cause the protection function to work 3 seconds later
and the power supply will be shut off.
Cause: The temperature of the heat sink is excessive.
Supplementary information: The abnormal voltage is
displayed in % based on 5V as 500%.
Turning on the power without correcting the abnormality
will cause the protection function to work 1 second later
and the power supply will be shut off.
* Additional causes of protection can be due to loose
connections, associated components, CPU, etc.
* For the protection voltage value, refer to DIAG menu
No.10 described later.
• Display during menu operation
During the DIAG operation, the function at work is
indicated on the FL indicator. The contents displayed
during the function operation are described in the later
section on details of functions.
• History of protection function
When the protection function has worked, its history is
stored in memory with a backup. Even if no abnormality
is noted while servicing the unit, an abnormality which
has occurred previously can be defined as long as the
backup data has been stored.
The history of the protection function is cleared when
DIAG is cancelled by selecting PRESET RESERVED
(Memory initialized) of DIAG menu No.9 or when the
backup data is erased.
● プロテクションの履歴
プロテクションが働いた場合、履歴をバックアップして
記憶しています。サービスのときに異常が認められなく
ても、バックアップが残っていれば、お客様のところで
起きた異常を区別できます。
プロテクションの履歴は、ダイアグメニューNo.9で
PRESET RESERVED（メモリーの初期化）を選んでダイ
アグを解除した場合や、バックアップが消えたときには
クリアされます。
● メニュー動作中の表示
- 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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