User manual FOSTEX EN4

[. . . ] Heed warnings - All warnings on the appliance and in the operating instructions should be adhered to. Follow instructions - All operating and use instructions should be followed. Water and Moisture - The appliance should not be used near water - for example, near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool, and the like. Carts and Stands - The appliance should be used only with a cart or stand that is recommended by the manufacturer. [. . . ] In order to go back to the normal display, press the [EXIT/NO] key or [STOP] button. Fs, DIGITAL IN, DIGITAL OUT and SLAVE MODE settings on the disk to be used when the Self Check test is executed should be as follow. · Fs : 44. 1kHz · DIGITAL IN : OFF (L: - R: -) · DIGITAL OUT : ADAT · SLAVE MODE : OFF 12 <Cable Connection in " Self Check " Mode> VR800 / EN4 4-5-1. SCSI Port Check If the VR800 does not recognize a SCSI device connected to the VR800 SCSI port, the prompt below will be displayed. · Bad cable connection, bad cable contact and / or the power of SCSI device is being turned off. (bad soldering of U7, U8, J6, etc. ) If a removable type SCSI drive is connected and in case a disk is not inserted into the drive, the following prompt will be displayed. In the case that the inserted disk is not FDMS-3 formatted, the following prompt will be displayed. Even if the before mentioned prompt is displayed, pressing the [EXECUTE/YES] key would reach the next test. 4-5-2. ATA (E-IDE) Bus Check This test checks if data can be properly read out from the preformatted internal drive. If the data (SYSTEM ID) written by formatting the disk cannot be read out correctly, the Self Check mode comes to a standstill at "AtaBusChk (check)" test. · Bad soldering of gate array U5 on the MAIN PCB. Even if the before mentioned prompt is displayed, pressing the [EXECUTE/YES] key would reach the next test. 13 VR800 / EN4 4-5-3. MIDI In/Out Check By connecting the MIDI IN and OUT ports, this test checks if the reply against the ID inquiry is correctly received. · Bad soldering of J2, U11 and surrounding circuit on the MAIN PCB Even if the before mentioned prompt is displayed, pressing the [EXECUTE/YES] key would reach the next test. 4-5-4. S/P DIF In/Out Check By connecting the DATA IN and OUT terminals, this tests checks if the S/P DIF signal output by itself is correctly received. Initializing is possible on the SCSI drive (ID: 0 ~ 5) used for recording / reproducing only. ? : blinking ? After pressing the [EXECUTE/YES] key, "SURE?" will start blinking in the FL display. In this condition, pressing the [EXECUTE/YES] key one more time would initialize the recognized disk drive. This mode puts the disk back to the condition originally formatted. 16 VR800 / EN4 4-8. Flash ROM : blinking This mode is used when copying the system software from ROM CARD PCB assy (P/N : 8274219000) to Flash ROM. SOFTWARE UPDATE" (page 8), the VR800 software inside the Flash ROM can be updated through the SCSI port. A blackout occurred while updating the software. ), the VR800 might not be able to boot up by the system software inside the Flash ROM. In this case, the following procedures must be taken. Turn off the power of VR800 and turn the switch on the ROM CARD PCB assy to "EPROM" side. Plug the EPROMs into the sockets on the ROM CARD PCB assy which will be supplied to you separately. Connect the ROM CARD PCB assy to J10 (50-pin connector) on the MAIN PCB assy. In this condition, the VR800 is booted up by the system software inside the EPROMs. Put the VR800 into the Service Mode, select "FlashROM" and press [EXECUTE/YES] key. [. . . ] U001 Part No. 8236083502 QFP, DG, CPU, VR800-DISPLAY DIODEs Description D, HT, 1SS136 D, HT, 1SS136 D, HT, 1SS136 D, HT, 1SS136 D, HT, 1SS136 OPT, VT, LED, RED, LT3D31W OPT, VT, LED, GRN, LT3E31W OPT, VT, LED, RED, LT3D31W OPT, VT, LED, YLW, LT3H31W OPT, VT, LED, GRN, LT3E31W OPT, VT, LED, GRN, LT3E31W OPT, VT, LED, YLW, LT3H31W OPT, VT, LED, GRN, LT3E31W RESISTORs Description HT, CARBON, 1/4W, 100, 5% HT, CARBON, 1/4W, 1M, 5% HT, CARBON, 1/4W, 22K, 5% HT, CARBON, 1/4W, 110, 5% HT, CARBON, 1/4W, 1K, 5% HT, CARBON, 1/4W, 10K, 5% HT, CARBON, 1/4W, 10K, 5% Ref. D001~008 D009~016 D017~022 D025~031 D033~036 D041~048 D049 D050 D051 D051, 052 D052 D054, 055 D056 Part No. 8234500700 8234500700 8234500700 8234500700 8234500700 8234504001 8234504004 8234504001 8234504003 8234504004 8234504004 8234504003 8234504004 Ref. 8230138101 8230138105 8230138223 8230138111 8230138102 8230138103 8230138103 Ref. [. . . ]