Roland A-6 Digital Audio Station Service Manual 电路图.pdf

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1、Oct, 1998A-6 TABLE OF CONTENTSPage A-6 SPECIFICATIONS1 LOCATION OF CONTROLS2 EXPLODED VIEW3 BLOCK DIAGRAM4 PARTS LIST 5 TEST MODE 68 SYSTEM SOFTWARE UPDATE8 CIRCUIT DIAGRAM right: system version GEntering the TEST MODE 1. While holding STATUS (track D) and EFFECT (track D) buttons under AUDIO RECORD

2、ER/MIXER, turn on POWER switch. See Note: in step 4 below. 2. When CHECK A6-OP1 . appears at the center of the screen, release the buttons. 3. Test options will be displayed. Among the test options shown below, options 1. LCD to 4. Switch are displayed on the initial screen. 4. If the option board,

3、A6-OP1 is installed, OP-1 appears on the upper right-side of the screen. Note: When the Zip drive is to be used during test, connect it before turning on the A-6. Set Termination to ON and SCSI ID to 6. 5. As mentioned before, the top of the LCD screen display shows the CPU software version (at the

4、left) and the system software version (at the right). (LCD SCREEN)(TEST ITEMS) 1. LCDLCD contrast check ( 1 ) 2. LCD contrastLCD contrast check ( 2 ) 3. LEDLED check 4. SwitchSwitch check 5. EncoderEncoder dial check 6. faderFader volume check 7. Pot Rotary volume check 8. BeamBeam check(*1) 9. Foot

5、 SWFoot switch check 10.MIDIMIDI check 11.IDEIDE drive check 12.SCSISCSI check(*2) 13.Analog I/OAnalog input and output check 14.Digital I/ODigital input and output check(*2) 15.InitializeInitialize the settings of the system data. *1 This item is not used for A-6. *2 This item is used at the instal

6、lation of the optional Multi I/O Expansion (A6-OP1). Selecting these test items, press M or L to move the cursor appears on the left side of the LCD to desired item. Press ENTER/YES. When the testing is completed the menu screen is appeared again. After the test, the screen exits to the menu screen.

7、 GTest Options 1. LCD In the LCD CHECK screen, Push KEY appears in the middle of the LCD. All LCD dots are turned on when (PLAY) (LED blinks green) is pressed here. Press (PLAY) again, all LCD dots are turned off. Repeats turning the LCD on and off alternately each time when (PLAY) is pressed. To fi

8、nish the test, press G(REC) (LED blinks red), the menu screen appears. 2. LCD contrast In the LCD CONT CHECK screen, CONTRAST = 5 appears at the bottom of the LCD. To change the contrast, rotate the TIME/VALUE dial. When the value of the contrast CONTRAST = * changed 0 to 15, LCD OK! appears on the

9、display. To finish the test, press G(REC) (LED blinks red), the menu screen appears. 3. LED In the LED CHECK screen, Push KEY appears on the LCD, then all LEDs are lit. When press at this point, only DISK INDICATOR LED is lit. After this, the LED is lit in order of the top left side each time the bu

10、tton is pressed. (STATUS has two color LEDs so first the red LED is lit then the green one is lit.) When the last LED is lit and complete the checking of LED, all LEDs are lit. LED OK! appears on the display. To finish the test, press G(REC) (LED blinks red), the menu screen appears. 4. Switch In th

11、e screen, 0 67 appears on the right side of the LCD, and * appears under that. When press any button here, that pressed buttons name or mark is displayed in the * section while the button is pressed. The approximately button location is indicated on the LCD each time the button is pressed. * SW OK!

12、appears when all the buttons have been pressed. To finish the test, press G(REC) (LED blinks red), the menu screen appears. 5. Encoder In the ENCODER CHECK screen, the graphics move to left or right which response to the TIME/VALUE dials movement are displayed. Value: 50 appears under the graphics.

13、When rotate the TIME/VALUE dial at this point, the value in the Value: 50 is changed within 0-100. When the value is changed within 0 - 100, OK! appears on the up right of the LCD. To finish the test, press G(REC) (LED blinks red), the menu screen appears. TEST MODE Oct, 1998A-6 7 6. Fader In the FA

14、DER CHECK screen, the six fader (slide volume) conditions are displayed on the left side of the LCD. The display responses to the each faders (slide volumes) movement. If the faders worked correctly from bottom to top, OK appears at the bottom and top of the each fader displayed in the LCD. When OK

15、is displayed on all of the faders, OK! appears in the middle of the screen. To finish the test, press G(REC) (LED blinks red), the menu screen appears. 7. Pot In the POT CHECK screen, the conditions of three rotary volumes in the DIGITAL AUDIO EFFECTS section are displayed. The display responses to

16、the each volumes movement. If the each volume works correctly from MIN to MAX, OK appears on the left and right side of the displayed volumes. When OK is displayed on all of the volumes, *OK!* appears on the top of the LCD. To finish the test, press G(REC) (LED blinks red), the menu screen appears.

17、8. Beam This item is not used for A-6. 9. Foot SW Connect the foot switch (DP-2) to GPI IN connector on the A-6 rear panel before start testing. In the FOOT SW CHECK screen, OFF 0 appears on the LCD. Step on the foot switch at this point, the display is changed to ON 127 and *OK!* appeared. To finis

18、h the test, press G(REC) (LED blinks red), the menu screen appears. 10. MIDI Connect MIDI IN and MIDI OUT connector on the A-6 rear panel with MIDI cable before start testing. In the MIDI CHECK screen, MIDI THRU, IN - OUT are appeared on the LCD. Press UNDO at this point. OUT- IN appears and if ther

19、e is no error, *OK!* message is appeared. If there is any malfunction on the MIDI circuit, *NG!* message would be appeared. To finish the test, press G(REC) (LED blinks red), the menu screen appears. 11. IDE Install the hard disk drive unit ( equivalent to HDPA6-21 ) to the A-6 before start testing.

20、 ( Turn off the power when installing the hard disk drive unit.) In the IDE CHECK screen, IDE Interface test starts automatically. If there is no error, IDE CHECK OK! appears about several seconds later. To finish the test, press G(REC) (LED blinks red), the menu screen appears. 12. SCSI Before star

21、t testing, connect both SCSI connector of the zip drive and A6-OP1 with SCSI cable, insert a zip disk to the zip drive, turn the terminator switch on, set the SCSI ID of the zip drive to 6, and turn on the power of the zip drive. In the SCSI CHECK screen, SCSI test starts automatically. If there is

22、no error, SCSI CHECK OK! appears. Followings are example messages when there is any malfunctions on SCSI. NG! A6-OP1(SPC) message displayed. Check the IC4(NCR53CF92) on the A6-OP1. NG! NO DRIVE message displayed. Check the SCSI ID of the zip drive, and check SCSI cable, etc. To finish the test, pres

23、s G(REC) (LED blinks red), the menu screen appears. 13. Analog I/O In the ANALOG CHECK screen, Fs=32.0kHz and other messages are appeared on the LCD. The check procedures are described as below. a. CD INPUT - MASTER OUTPUT TEST Turn the CD volume on the INPUT MIXER section to the MAX. Connect the os

24、cillator ( wave form generator ) to CD INPUT, Input the sine wave with 1kHz and 620mVp-p. (The setting of the oscillator is in common with the all checks.) Connect the oscilloscope to the MASTER OUTPUT. If the connection is correct, the sine wave about 8Vp-p is output. b. MUTE CIRCUIT TEST Under the

25、 condition (a.) above, press 4/(8) on the LOCATOR section. The MUTE circuit is normal condition when Mute: OFF on the up right of the LCD is changed to Mute ON and the wave form output is stopped(muted) at the same time. c. VCR INPUT - MONITOR OUTPUT TEST Turn the VCR volume on the INPUT MIXER secti

26、on to MAX. Reconnect the oscillator ( wave form generator ) to VCR INPUT and the oscilloscope to MONITOR OUTPUT. At this point, check the input wave form as same as the procedure (a.). The sine wave has about 8Vp-p is output under normal condition. d. SWITCHING SAMPLING FREQUENCY TEST Under the cond

27、ition (c.), press 3/(7) on the LOCATOR section to switch Fs=32.0kHz to Fs= 44.1kHz on the up left of the LCD. If there is no changes of the wave form, the check is successful. e. HEADPHONES TEST The display MASTER under the PHONE is changed from MAS - MON- M+M- OFF each time 2(6) on LOCATOR section

28、is pressed. The headphones output also switched simultaneously. First connect the headphones and input the oscillators ( wave form generators ) signal to CD INPUT. When switch the output and there is no error, the sound can be heard from the headphones at only MAS and M+M. When connect the oscillato

29、r (wave form generator) to VCR INPUT and there is no error, the sound can be heard from the headphones at only MON and M+M. A-6 Oct, 1998 8 f.OPTIONAL BOARD (A6-OP1) ANALOG INPUT/OUTPUT TEST Connect INPUT(LR) and OUTPUT(LR) of the A6- OP1 with a pair of XLR-Type audio cable. ( OUTPUTL - INPUTL, OUTP

30、UTR - INPUTR ) Turn the CD and VCR volume on the INPUT MIXER section to the direction of 10 oclock. Connect the oscillator ( wave form generator ) to CD INPUT, Input the sine wave with 1kHz and 640mVp-p. Connect the oscilloscope to the MASTER OUTPUT. If the connection is correct, the sine wave about

31、 8Vp-p is output. To finish the test, press G(REC) (LED blinks red), the menu screen appears. 14. Digital I/O In the DIGITAL CHECK screen, IN:- appears on the left side of the LCD. Press 1/(5) on the LOCATOR section to change IN;COAX. * IN:OPT is not used for A-6. a. DIGITAL INPUT TEST Connect the C

32、D players digital output connector (coaxial-type) and A6-OP1s DIGITAL IN connector with digital audio cable (coaxial-type). Connect the headphones to A-6s PHONES connector. When the power of the CD player is OFF, Unlock appears on the right side of the LCD. Unlock is changed to Locked when the power

33、 of the CD player is turned on. When playing back the CD, the sound can be heard from the headphones if the connections are successful. b. DIGITAL OUTPUT TEST Connect the A6-OP1 DIGITAL OUT connector and output and DAT recorders digital input (coaxial-type). DAT recorder is now in the monitor status

34、 for the digital input. Connect the headphones to DAT recorder. At the test (a.), if the CD playback sound can be heard from DAT recorder, the test is successful. To finish the test, press G(REC) (LED blinks red), the menu screen appears. 15. Initialize Perform the following procedure when the lette

35、rs of the system parameter become impossible to read by the destruction of the system parameter in the flash memory, or you wish to return to the factory settings. After entering the INITIALIZE screen, press UNDO. The system parameter and user effects patch starts being initialized. The initialized

36、system parameters are as follows; system common parameters, system MIDI parameters. Press G(REC) (LED blinks red), the menu screen appears. GAbout the destruction of the flash memory If the flash memory (IC9 on the Main board) is damaged or destroyed from the malfunctions of the software / hardware,

37、 following messages are appeared on the LCD. If these messages are appeared when turning on the power, re-install the system software is required. If there is a still problem, exchange the flash memory in case of the flash memorys default. And re-install the system software. If the flash memory is r

38、eplaced with new one, re-installation of the system software and Initialize operation above are required. The latest system software of the A-6 is stored to the floppy disk named A-6 System Ver. 1.xx SMF as the standard MIDI file format (SMF format). Check the following SMFs included to the floppy d

39、isk. Update A-6 system software by following the procedure described below. 1. Connect a MIDI cable between two connectors; MIDI OUT connector of the MIDI Sequencer that can play back SMF data, and MIDI IN connector of A-6. It is convenient to use the MIDI Sequencer such as a SB-55 sound brush that

40、can play back some SMFs continuously. 2. While holding down Track As EFFECTS (BAL/EQ/FX), turn on the A-6s power. MIDI update screen is displayed. 3. Check the message waiting MIDI. is appeared on the display. Playback the SMF data in order the number 1 to 8. While the data is being received Receivi

41、ng. (x/8) is displayed and the pad indicator (PAD) blinks. (x is the SMF data number being received.) 4. When all of SMF data is received Update System? (Y/N) is appeared on the display. Press ENTER/YES. Note: Never turn the power off while the message *KEEP POWER ON * is being displayed. 5. When Up

42、date Complete and You may TURN OFF are appeared on the display, turn the power off and turn it on again. Now complete the update A-6 system software. A-6 SYSTEM SOFTWARE UPDATE USING THE SMF (Ver. Up Disk(SMF) P/No.17048933) A-6 Oct, 1998 SYSTEM is BROKEN! Please consult qualified Roland Service. A-

43、6 System Ver. 1.xx SMF disk A6#1 .MID A6#2 .MID A6#3 .MID A6#4 .MID A6#5 .MID A6#6 .MID A6#7 .MID A6#8 .MID 12345678910111213141516171819202122232425262728 A B C D E F G H I J K L M N O P Q R S T U 9 CIRCUIT BOARD MAIN BOARD ASSY (71127056) View from component side. Oct, 1998A-6 12345678910111213141

44、516171819202122232425262728 A B C D E F G H I J K L M N O P Q R S T U 10 MAIN BOARD ASSY (71127056) View from foil side. A-6 Oct, 1998 12345678910111213141516171819202122232425262728 A B C D E F G H I J K L M N O P Q R S T U 11 PANEL BOARD ASSY (70909012) / MIDI BOARD ASSY (71016034) /CONNECTOR BOAR

45、D ASSY (71124767) MIDI BOARD ASSY (71016034) PANEL BOARD ASSY (70909012) Oct, 1998A-6 CONNECTOR BOARD ASSY (71124767) View from component side. View from foil side. 12345678910111213141516171819202122232425262728 A B C D E F G H I J K L M N O P Q R S T U 12 SW BOARD ASSY (71016045) / BEAM BOARD ASSY

46、 (71124723) View from component side.View from foil side. BEAM BOARD ASSY (71124723) SW BOARD ASSY (71016045) A-6 Oct, 1998 Oct, 1998A-6 13 12345678910111213141516171819202122232425262728 A B C D E F G H I J K L M N O P Q R S T U 2930313233343536373839404142 V W X Y Z MONITORCDVCR GPI TC170C140AF-00

47、3 IC11 OSC 29 SYO 132 SYI 133 TRCKO 107 TRCKIN 56 TRS5 101 TRS4 102 TRS3 103 TRS2 104 TRS1 105 TRS0 106 TRR5 62 TRR4 61 TRR3 60 TRR2 59 TRR1 58 TRR0 57 VPOUT 53 MCK1 130 MCK0 131 BCK1 128 BCK0 129 LRCK1 124 LRCK0 125 DA7 111 DA6 112 DA5 113 DA4 114 DA3 115 DA2 116 DA1 117 DA0 118 AD3 120 AD2 121 AD1

48、 122 AD0 123 TYPE 65 DIRECT 64 INT1 66 INT0 67 RST2 51 RST1 52 CS 68 WR 69 RD 70 CA0 88 CA1 87 CA2 86 CA3 85 CA4 84 CA5 83 CA6 82 CA7 81 CA8 79 CA9 78 CA10 77 CA11 76 CA12 75 CA13 74 CD0 99 CD1 98 CD2 97 CD3 96 CD4 95 CD5 94 CD6 93 CD7 92 WE 13 CAS 14 RAS 15 PSEA16 136 PSEA15 137 PSEA14 138 PSEA13 1

49、39 PSEA12 140 PSEA11 141 PSEA10 142 EA9 27 EA8 26 EA7 25 EA6 24 EA5 23 EA4 22 EA3 21 EA2 20 EA1 17 EA0 16 ED23 49 ED22 48 ED21 47 ED20 46 ED19 45 ED18 44 ED17 43 ED16 42 ED15 39 ED14 38 ED13 37 ED12 36 ED11 35 ED10 34 ED9 33 ED8 32 ED7 10 ED6 9 ED5 8 ED4 7 ED3 6 ED2 5 ED1 4 ED0 3 VSS_20 143 VSS_19 135 VSS_18 127 VSS_17 119 VSS_16 110 VSS_15 100 VSS_14 91 VSS_13 89 VSS_12 80 VSS_11 73 VSS_10 71 VSS_9 63 VSS_8 55 VSS_7 50 VSS_6 40 VSS_5 31 VSS_4 28 VSS_3 19 VSS_2 11 VSS_1 2 VDD_13 144 VDD_12 134 VDD_11 126 VDD_10 109 VDD_9 108 VDD_