Yamaha A-S201 Service Manual Download Page 32 | Manualshive

Page: 32 / 51

Yamaha A-S201 Service Manual Download Page 32

110-120
220-240V/
50/60 Hz

POWER
AMPLIFIER

MUTE

SP A

RY102

RY103

RY101

SP B

PHONES

AC IN

Internal CLK:32MHz

Sub-transformer

Power transformer

Operation Key

(TACT SW.)

Volume

(ROTARY ENCODER)

POWER SUPPLY

Relay Driver

SPEAKERS

A

B

(REC)

HP

POWER

PDT/RST

MUTE

Relay Driver

FL Display

POWER SUPPLY

POWER SUPPLY

POWER SUPPLY

PHONO

LINE

CD

MAIN

• See page 41

→

SCHEMATIC DIAGRAM

A

B

C

D

E

F

G

H

I

J

1

2

3

4

5

6

7

32

A-S201

■

BLOCK DIAGRAM

«
...
30
31
32
33
34
...
»

Summary of Contents for A-S201

Page 1: ...nition of any applicable technical capabilities or establish a principle agent relationship of any form The data provided is believed to be accurate and applicable to the unit s indicated on the cover The research engineering and service departments of Yamaha are continually striving to improve Yamaha products Modifications are therefore inevitable and specifications are subject to change without ...

Page 2: ...Meter impedance should be equivalent to 1500 ohms shunted by 0 15 μF TO SERVICE PERSONNEL Leakage current must not exceed 0 5mA Be sure to test for leakage with the AC plug in both polarities WARNING CHEMICAL CONTENT NOTICE All of the P C B s installed in this unit and solder joints are soldered using the lead free solder Among some types of lead free solder currently available it is recommended t...

Page 3: ... FRONT PANEL T model R model REAR PANELS 3 A S201 A S201 ...

Page 4: ...B G models K model A model 4 A S201 A S201 ...

Page 5: ...L model 5 A S201 A S201 ...

Page 6: ...Level Output Impedance REC OUT 500 mV 2 2 k ohms Headphone Jack Rated Output Output Impedance 1 kHz 500 mV 8 ohms load CD etc input 470 mV 470 ohms Frequency Response CD etc 20 Hz to 20 kHz 0 0 5 dB 10 Hz to 100 kHz 0 3 0 dB RIAA Equalization Deviation PHONO MM 0 5 dB Total Harmonic Distortion 20 Hz to 20 kHz PHONO MM to REC OUT 2 V 0 025 or less CD etc to SP OUT 50 W 8 ohms 0 2 or less Signal to ...

Page 7: ...435 x 141 x 333 mm 17 1 8 x 5 1 2 x 13 1 8 Weight 6 7 kg 14 8 lbs Finish R T K A B G L models Black color R T K A B G L models Silver color Accessories Remote control x 1 Battery LR6 AA UM 3 x 2 Specifications are subject to change without notice R General model T Chinese model K Korean model A Australian model B British model G European model L Singapore model DIMENSIONS Front view 21 7 8 435 17 ...

Page 8: ...a high voltage continues to exist there Before starting any repair work connect a discharging resistor 5 k ohms 10 W to the terminals of each capacitor indicated below to discharge electricity The time required for discharging is about 30 seconds per each C140 C143 C149 and C150 on MAIN 1 P C B For details refer to PRINTED CIRCUIT BOARDS MAIN 5 P C B R model MAIN 1 P C B MAIN 8 P C B MAIN 7 P C B ...

Page 9: ...the top cover Fig 1 2 Removal of Front Panel Unit a Remove screw and 6 screws Fig 1 b Remove screw and then remove W501 Fig 1 c Remove CB102 CB204 and CB502 Fig 1 d Release 2 hooks and then remove the front panel unit Fig 1 Fig 1 DISASSEMBLY PROCEDURES Front panel unit Top cover CB102 CB502 CB204 MAIN 2 P C B MAIN 1 P C B MAIN 6 P C B Hook Hook 9 A S201 A S201 ...

Page 10: ...ig 2 3 Removal of AMP Unit a Remove 12 screws Fig 3 b Remove 4 screws and screw Fig 2 c Remove CB4 CB7 and CB103 Fig 2 d Remove the AMP unit Fig 2 AMP unit CB4 CB7 CB103 MAIN 1 P C B Rear view 10 A S201 A S201 ...

Page 11: ...ect the heatsink and rear panel to the chassis with a ground lead or the like Fig 4 Reconnect all cables connectors that have been disconnected When connecting the flexible flat cable be careful with polarity Rear panel Chassis Heatsink MAIN 1 P C B Ground lead Ground lead 11 A S201 A S201 ...

Page 12: ...DIAGNOSTIC FUNCTION Select PRST RSRV press the Power key to turn off the power once and turn on the power again Then the back up IC is initialized UPDATING FIRMWARE Required Tools Firmware downloader program RFP exe Firmware AS_201_xxx mot RS 232C conversion adaptor Part No ZK189200 Flexible flat cable 9 pin 150 mm pitch 1 25 Part No ZD896000 USB to Serial converter USB type A to D sub 9 pin Recom...

Page 13: ... panel of this unit to the USB port of the PC with USB to serial converter RS 232C conversion adaptor and flexible flat cable as shown below Fig 1 Fig 1 Operation procedure 1 Connect the power cable of this unit to the AC outlet The power to this unit is supplied and the microprocessor is in the writing mode 2 Start up RFP exe The screen appears as shown below Fig 2 3 Select the Basic mode and cli...

Page 14: ...r RL78 Using Target Microcontroller RL78 G13 R5F100JE Workspace Name Any name Project Name Any name Folder Any place Click Browse and specify the place where the workspace is made Fig 3 5 Click Next Fig 3 Fig 3 RL78 RL78 G13 R5F100JE Workspace Name Project Name Folder 14 A S201 A S201 ...

Page 15: ...e manager click Start Control panel System Hardware and Device manager in this order b Right click the communication port COMx of the port COM and LPT to open the property Fig 5 COMx Enter the port number of the PC to which the USB to serial converter is connected in place of x c Using the port setting function set the Bit second to 115200 Fig 5 8 Click OK Fig 5 Fig 4 Fig 5 Tool COMx 115200 15 A S...

Page 16: ...9 Click Browse and select the firmware name Fig 6 10 Click Start to start writing Fig 6 Fig 6 Writing being executed 16 A S201 A S201 ...

Page 17: ...it 15 Connect the power cable of this unit to the AC outlet start up the self diagnostic function and check that the firmware version and checksum are the same as written ones For details refer to Confirmation of firmware version and checksum 11 When writing of the firmware is completed the screen appears as shown below Fig 7 12 Click X to end RFP exe Fig 7 Fig 7 17 A S201 A S201 ...

Page 18: ...dels covered in this service manual SELF DIAGNOSTIC FUNCTION No Main menu No Sub menu 1 FIRMWARE VERSION CHECK SUM 1 FIRMWARE VERSION 2 FIRMWARE CHECKSUM 3 MODEL DESTINATION 2 DISPLAY CHECK 1 VFD CHECK 2 ALL SEGMENT OFF 3 ALL SEGMENT ON 3 FACTORY RESET 1 PRESET INHIBIT 2 PRESET RESERVE 4 AD DATA CHECK 1 PS 2 DC 3 TA 4 DESTINATION 5 KEY 5 PROTECTION HISTORY 1 HISTORY 1 2 HISTORY 2 3 HISTORY 3 4 HIS...

Page 19: ... keep pressing those 2 keys and Power key for 3 seconds or longer The self diagnostic function mode is activated with the protection functions disabled In this mode the SLEEP segment of the FL display flashes to indicate that the mode is self diagnostic function mode with the protection functions disabled Starting Self Diagnostic Function While pressing the BASS and SPEAKERS A keys press the Power...

Page 20: ...function due to excess current works 1 time the power will not turn on even when the Power key is pressed In order to turn on the power again disconnect the power cable of this unit from the AC outlet once and then reconnect it again The output transistors in each amplifier channel should be checked for damage before applying power to this unit Amplifier current should be monitored by measuring DC...

Page 21: ...f voltage at the moment when the protection function worked Reference voltage 3 3 V 255 xxx A D conversion value of voltage at the moment when the protection function worked Reference voltage 3 3 V 255 Cause The voltage in the power supply section is abnormal Supplementary information The protection function worked due to a defect or overload in the power supply Turning on the power without correc...

Page 22: ...ble Initial settings when Self Diagnostic Function started The following initial settings are used when self diagnostic function is started When self diagnostic function is canceled these settings are restored to those before starting self diagnostic function Master volume 60 Input CD SPEAKER SPEAKERS A on Keys of this unit History of protection function When the protection function has worked its...

Page 23: ...s in the figure are given as reference only 1 1 FIRMWARE VERSION The firmware version of the microprocessor IC203 on MAIN 1 P C B and destination are displayed Not for service 1 2 FIRMWARE CHECKSUM The checksum value of the microprocessor IC203 on MAIN 1 P C B is displayed 1 3 MODEL DESTINATION The model name and destination are displayed Not for service Destination R T K A G B G L S U M C 6 6 4 V...

Page 24: ...y turning ON and OFF all segments 2 DISPLAY CHECK This menu is used to check operation of the FL display Using the sub menu the display varies as shown below 2 1 INITIAL DISPLAY 2 2 ALL SEGMENT OFF 2 3 ALL SEGMENT ON After check change to next sub menu at once 24 A S201 A S201 ...

Page 25: ...his menu is used to display the A D conversion value of the microprocessor which detects panel keys and protection functions by using the sub menu When 4 5 KEY sub menu is selected keys become inoperable due to detection of the values of all keys However it is possible to advance to the next menu by pressing the forward key or reverse key on the remote control Numeric values in the figure are give...

Page 26: ...03 is displayed When the A D conversion value of the panel key becomes out of the specified range normal operation will not be available In that case check the constant of voltage dividing resistor solder condition etc Refer to table When 4 5 KEY menu is selected keys become inoperable due to detection of the values of all keys However it is possible to advance to the next menu by pressing the for...

Page 27: ...ic values in the figure are given as reference only 6 POWER OFF FACTOR HISTORY This menu is used to display the history of power off factor 5 1 HISTORY 1 H Displayed when the voltage is HIGHER than upper limit 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 5 2 HISTORY 2 5 3 HIS...

Page 28: ...No pin Pin No Connection 20 10G 19 P16 18 P15 17 P14 16 P13 15 P12 14 P11 13 P10 12 P9 11 P8 10 P7 9 P6 P5 P4 8 7 6 P3 5 P2 4 P1 3 NP 2 1 F1 F1 Pin No Connection 32 F2 31 F2 30 NP 29 1G 2G 3G 28 27 26 4G 25 5G 24 6G 23 7G 22 21 9G 8G PIN CONNECTION GRID ASSIGNMENT 2G 10G PATTERN AREA 1 32 V501 HNV 10SS61 MAIN P C B 1G 2G 3G 4G 5G 6G s1 a d p j c b m k h n r g e f s2 7G 8G 9G 10G 28 A S201 A S201 ...

Page 29: ...20 P15 SDA20 P14 SCL21 P70 SDA21 P71 RxD2 P14 TI07 TO07 P41 PORT 0 4 ch1 ch2 ch3 ch4 ch5 ch6 ch7 WINDOW WATCHDOG TIMER UART0 UART1 CSI00 CSI01 CSI11 CSI20 CSI21 IIC00 IIC01 IIC11 IIC21 IIC20 LINSEL UART2 12 BIT INTERVAL TIMER LOW SPEED ON CHIP OSCILLATOR REAL TIME CLOCK PORT 1 8 PORT 2 6 PORT 3 2 PORT 4 2 PORT 5 2 PORT 6 4 PORT 7 8 PORT 14 KEY RETURN POWER ON RESET VOLTAGE DETECTOR RESET CONTROL P...

Page 30: ...11 PWR_DET I IRQ Power detect LOW AC OFF 30 P17 TI02 TO02 TXD0 VOL_RA I I Volume encoder clockwise 31 P16 TI01 TO01 INTP5 RXD0 VOL_RB I I Volume encoder counterclockwise 32 P15 PCLBUZ1 SCK20 SCL20 TI02 TO02 PDRT_LED O O PURE DIRECT Led LOW OFF 33 P14 RxD2 SI20 SDA20 SCLA0 TI03 TO03 REC_N_MUTE O O REC OUT mute LOW MUTE ON 34 P13 TxD2 SO20 SDAA0 TI04 TO04 PRE_N_MUTE O O PRE OUT mute LOW MUTE ON 35 P...

Page 31: ...55 000 011 012 032 033 054 055 079 080 107 108 134 135 160 KEY0 INPUT INPUT TREBLE TREBLE BASS BASS PURE DIRECT 7 5 kΩ 15 kΩ Detected voltage value at 41 pin 2 08 2 41 V 2 42 2 77 V A D value 3 3 V 255 161 187 188 214 KEY1 SPEAKER A SPEAKER B R280 on MAIN 1 P C B 20 kΩ 6 2 kΩ 7 5 kΩ 1 8 kΩ 2 7 kΩ 9 1 kΩ Detected voltage value at 45 pin 2 1 2 3 V 1 19 1 32 V 1 33 1 48 V 0 4 0 61 V 0 62 0 76 V 1 49 ...

Page 32: ... Key TACT SW Volume ROTARY ENCODER POWER SUPPLY IC501 FL Driver HT16515 44LQFP Relay Driver SPEAKERS A B REC HP POWER PDT RST MUTE Input Selector Volume Tone Control E VOLUME BD3491FS IC202 Relay Driver PHONO EQ NJM2068MD IC201 FL Display POWER SUPPLY POWER SUPPLY POWER SUPPLY PHONO LINE CD MAIN See page 41 SCHEMATIC DIAGRAM A B C D E F G H I J 1 2 3 4 5 6 7 32 A S201 BLOCK DIAGRAM ...

Page 33: ...nt panel 40 mm Tie AC cable and all wire from power transformer together Stick FFC 18p with MAIN 8 P C B 60 mm POWER TRANSFORMER POWER TRANSFORMER MAIN 5 MAIN 3 MAIN 6 MAIN 1 MAIN 4 MAIN 2 Top view Top view R model W102 CB103 CB501 W503A W503B W502A W502B CB102 CB204 CB501 CB502 CB7 CB4 CB7 CB4 CB3 W101 CB101 CB204 CB502 CB102 MAIN 8 MAIN 8 MAIN 8 MAIN 7 MAIN 6 MAIN 6 MAIN 2 R model A B C D E F G ...

Page 34: ... parts in this product contain high voltages and are dangerous Be sure to take safety measures during servicing such as wearing insulating gloves Note that the capacitors indicated below are dangerous even after the power is turned off because an electric charge remains and a high voltage continues to exist there Before starting any repair work connect a discharging resistor 5 k ohms 10 W to the t...

Page 35: ...G4 D110 H3 D114 F3 Ref no Location D115 E4 D116 G4 D117 G3 D119 E4 D120 E4 D201 D5 D202 D5 D203 C4 Ref no Location D204 C4 D207 B4 IC1 I5 IC201 C3 IC202 D3 IC203 C4 Q1 I4 Q2 I4 Ref no Location Q3 I5 Q5 I4 Q6 H4 Q7 H4 Q8 H4 Q101 G5 Q102 D5 Q103 G5 Ref no Location Q107 G5 Q108 E5 Q117 G6 Q118 E5 Q119 D6 Q120 E4 Q122 G4 Q123 G4 Ref no Location Q124 D4 Q125 H4 Q126 E4 Q127 G4 Q128 H4 Q129 E4 Q130 G4 Q...

Page 36: ... MVOL_RA VPE FL_MISO MG VOL_RA MG 3 3S VOL_RB SW_PDRT FG VOL_RA MG 3 3S VOL_RB SW_PDRT FG Power SPEAKERS A B VOLUME MG 3 3M MP_SW SW_SPAB MG 3 3M MP_SW SW_SPAB Remote control sensor POWER TRANSFORMER STANDBY ON indicator PURE DIRECT indicator PURE DIRECT INPUT TREBLE BASS chassis A B C D E F G H I J 1 2 3 4 5 6 7 36 A S201 Semiconductor Location Ref no Location D511 G2 D514 D2 ...

Page 37: ...IC501 MAIN 2 Side B 1 11 12 22 23 33 34 44 MAIN 3 Side B MAIN 4 Side B A B C D E F G H I J 1 2 3 4 5 6 7 A S201 37 Semiconductor Location Ref no Location D501 F2 D502 F2 IC501 E2 Q502 E2 Q503 G3 Q504 C2 ...

Page 38: ...Side A MAIN 7 Side A MAIN 8 Side A MAIN 1 W102 MAIN 1 CB101 VCC OUT GND 3 3S MG THM HPR HPL HPE HPE PHONES POWER TRANSFORMER VOLTAGE SELECTOR 220V 240V 110V 120V RE YE OR PU A B C D E F G H I J 1 2 3 4 5 6 7 38 A S201 Ref no Location IC101 D5 Semiconductor Location ...

Page 39: ...MAIN 5 Side B R model MAIN 6 Side B MAIN 7 Side B MAIN 8 Side B A B C D E F G H I J 1 2 3 4 5 6 7 A S201 39 ...

Page 40: ...B UDZV2 4B UDZV27B BAV103 1N4003S 1SS355VMTE 17 D5SBA60 5A 600V DB105 B E C C E B B E C 2 1 1 GND 2 IN 3 OUT 3 G S D B E C E C B 1 3 6 4 1 Drain 2 Drain 3 Gate 4 Source 5 Drain 6 Drain B E C EC B B C E 2SD2704 K KTC3206Y ATP 2SA1037AK R S KTD600K Y U PH 2SA1514K R S 2STC4468 KTA1661 Y RTF P KTB631K Y U PH KTC4373 Y RTF P KTC4376 Y RTF P 2N5551S RTK 2SA1037K 2SC2412K 2SC3906K KTA1664 Y RTF P MCH633...

Page 41: ...800 66 C140 C 1 5 0 1 0 0 0 6 3 C 1 4 9 1 0 0 0 6 3 1 2 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 31 32 R L R L LINE2 R L R L TUNER Lch Rch GND SDIO SCK F L _ M O S I SPARY K E Y 0 3 3 S V O L _ R B FL_SCK M G V O L _ R A KEY1 R E G C PRI FL_STB H P R Y X 1 V D D SPBRY 3 3 M K E Y 1 PRPS F L _ S C K THM KEY0 V S S T O O L 0 VREFM R E M N _ R S T DEST VREFP EVOL_SDA R ...

Page 42: ...SPLAY FLTR CE CERAMIC FILTER FLTR COMB COMB FILTER MODULE FLTR LC RF LC FILTER EMI FUSE CHP CHIP FUSE GND MTL GROUND PLATE GND TERM GROUND TERMINAL JUMPER CN JUMPER CONNECTOR JUMPER TST JUMPER TEST POINT L DTCT LIGHT DETECTING MODULE LED CHP CHIP LED LED DSPLY LED DISPLAY LED INFRD LED INFRARED PHOT CPL PHOTO COUPLER PHOT INTR PHOTO INTERRUPTER PHOT RFLCT PHOTO REFLECTOR PHOT TR PHOTO TRANSISTOR P...

Page 43: ...5 WW194100 C MYLAR 0 1uF 100V C156 US064100 C CE CHP 0 01uF 50V B C157 WN200100 C CE M CHP 0 01uF 100V TKABGL C159 161 WN200100 C CE M CHP 0 01uF 100V TKABGL C164 WN200100 C CE M CHP 0 01uF 100V C165 167 WW194100 C MYLAR 0 1uF 100V C168 169 UR877330 C EL 33uF 63V C170 171 WJ608100 C MYLAR 100pF 100V C172 WW194100 C MYLAR 0 1uF 100V C177 180 WN200100 C CE M CHP 0 01uF 100V TKABGL C189 190 WN200100 ...

Page 44: ...7 118 WF549900 TR 2SC3906K T146 R S Q119 120 WC397600 TR 2N5401S RTK P Q122 WC398300 TR 2N5551S RTK P Q123 ZE918100 TR KTA1664 Y RTF P Q124 ZE933000 TR KTC4376 Y RTF P Q125 WC398300 TR 2N5551S RTK P Q126 WC397600 TR 2N5401S RTK P Q127 128 WC398300 TR 2N5551S RTK P Q129 ZG245700 TR KTA1661 Y RTF P Q130 ZG245800 TR KTC4373 Y RTF P Q131 WC397600 TR 2N5401S RTK P Q132 133 WC398300 TR 2N5551S RTK P Q20...

Page 45: ...ANA RTA TE102 ZH270200 TERM SP 8P NON BANANA KBGL U501 WW715100 L DTCT SIR8430MH6 V501 ZG358500 FL DSPLY HNV 10SS61 ZG943300 FL SPACER WP935100 HOLDER 1P 46 A S201 A S201 Ref No Part No Description Markets Ref No Part No Description Markets New Parts New Parts ...

Page 46: ...3 Ω HJ35 3330 HF85 3330 4 7 Ω HJ35 3470 HF85 3470 5 6 Ω HJ35 3560 HF85 3560 10 Ω HF45 4100 HF45 4100 15 Ω HJ35 4150 HF85 4150 22 Ω HF45 4220 HF45 4220 27 Ω HJ35 4270 HF85 4270 33 Ω HF45 4330 HF45 4330 39 Ω HJ35 4470 HF85 4390 47 Ω HF45 4470 HF45 4470 56 Ω HF45 4560 HF45 4560 68 Ω HF45 4680 HF45 4680 75 Ω HF45 4750 HF45 4750 82 Ω HF45 4820 HF45 4820 91 Ω HF45 4910 HF45 4910 100 Ω HF45 5100 HF45 510...

Page 47: ...2 72 72 72 72 70 72 72 72 57 72 57 57 50 31 33 70 13 54 70 70 73 74 73 73 73 73 73 61 72 35 35 52 15 71 77 78 77 76 11 76 36 70 32 2 32 3 32 1 32 4 1 6 1 7 1 5 1 8 1 1 1 3 1 4 1 2 53 20 OVERALL ASSEMBLY A B C D E F G H I J 1 2 3 4 5 6 7 48 A S201 ...

Page 48: ... VV849300 RADIATION SHEET 19x24 53 V2438700 CORD STOPPER 10P1 54 WQ664500 SUPPORT H8 57 ZC181800 LEG D60 H21 Black 61 AA627310 GROUND TERMINAL 62 VQ368600 PUSH RIVET P3555 B 70 WE774800 BIND HEAD P TIGHT SCREW 3x8 MFZN2W3 71 VK173200 SCREW TRANSISTOR 3x15 SP MFC2 72 WE774300 BIND HEAD B TIGHT SCREW 3x8 MFZN2W3 73 WE774100 BIND HEAD BONDING B T SCREW 3x8 MFZN2B3 74 WE877900 BIND HEAD S TIGHT SCREW ...

Page 49: ...A B8C6 20 BASS 7A B7C9 21 INFO 7A A4 22 BALANCE L 7A BBC5 23 BALANCE R 7A BCC2 24 up 7A 9D63 25 left 7A 9F61 26 ENTER 7A DE20 27 right 7A 9E60 28 down 7A 9C62 29 MENU 7A 847A 30 PURE DIRECT ７A DD23 31 VOLUME 7A 1AE4 33 MUTE 7A 1CE2 34 VOLUME 7A 1BE5 37 stop 79 56 38 pause 79 55 39 play 79 02 40 DISC SKIP 79 4F 41 skip 79 04 42 skip 79 07 43 open close 79 01 44 search 79 05 45 search 79 06 25 1 4 7...

Page 50: ...U Available menu items vary depending on the selected input source The default settings are marked with SETTING THE OPTION MENU FOR EACH INPUT SOURCE Input selector buttons MENU ENTER Option menu items Menu item Description MAX VOL Sets the maximum volume level so that the volume will not be accidentally increased above a certain level Adjustable range 01 to 99 MAX INITIAL VOLUME INIT VOL Sets the...

Page 51: ...A S201 ...

Reviews:

No comments

Brands by name

0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Popular brands

Load more brands