Translation of the russian "Startup Manual" for Aleste 520EX ------------------------------------------------------------------------------- On startup and adjustment of your computer. Recommendations before first inclusion the most common and here we will not write about them. Carefully collected from healthy details computer must earn immediately. However at use Chipset different series may observed unstable work computer in certain modes. For reliable work We recommend immediately before the first inclusion to make two improvements which will be written below. The first inclusion, we recommend without ROM D31. Below are diagrams of some signals in this mode. Also are Chart main signals in Depending on the mode screen. We recommend apply Products these on wiring diagram board. All programmable chips and basic BIS should be installed on the panels (D70 - optional). Case in Volume what we repeatedly observed cases of failure drive controller so that the disk reads were normal and at record disk information on it port; also does formatting. Moreover occur it can not permanently. On time adjustment should vypayat right on board output resistor R6 order to include them image. For more reliable operation of the scheme must also set capacitor capacity 510 pF between 3 and 7 findings D77. Depending on the instance D65 is dictated by the need capacitor C4, and determined she the absence of small horizontal synchronization failures in different modes graphics. Weak interference the image in low graphics mode permission may observed because different Performance Chipset D50 - D53. They eliminated installation capacitor small capacitance (several tens of pF) one of the signals XTAL, RRC or MVI. If the D87, D88 are applied IR26, some resistors R28 - R31 can not install, and R32 need necessarily. If you do not do revision 1, then the output should be 9 D24 install capacitor 30 - 80 pF, and if as D87 D88 applied IR32, the diode VD12 can replace the jumper and Resistors R28-R32 install. In this case it is better to apply IR32. If you do not do revision 2, then D54 is better to use 555 series and D26 Series 1533. In this case, on the spot D62 may work not all instances of chips. ------------------------------------------------------------------------------- On the PCB. It should be noted that the printed circuit board is only for Corps similar corps computers PATISONIC 48ST, FORUM AFFILIATES 2 and hardly advisable to install it another body. In print board there are 4 errors. To eliminate them must do following: cut the wire coming left on conclusion 8 D73 (near the diode VD9) and join the rest left part this conductor with withdrawal 8 D72; cut connection between findings 13 and 14 of D66 and the bottom of board output resistor R15 solder found 13 D66; to post a systematic connector signal -WAIT; remove closure of the contact area vias on the bus +5 V chip under D66. Refinement 1. 1+---+ 1533LI1 D88/6 ------Ý & Ý 2Ý Ý3 D32/2 ------Ý +----+ +---+ Ý +------------+ Ý 4+---+ +---Ý & Ý 5Ý Ý6 D40/8 ------Ý +----- D24/9 +---+ The elements VD12 and R136 excluded. MORE chip soldered findings Food on D29. Conclusions 1 and 2 connected with lower on board contact sites VD12 and R136. Conclusion 6 connects with top contact platform R136. At the conclusion of 1 additional Products need set 2K resistor to +5 V if applicable Products IR32. Refinement 2. D39/15 -----------------------+ 4+-----+ Ý 10+-----+ D41/11 ----------ÝS T Ý +-----ÝS T Ý 3Ý Ý5 11Ý Ý9 D39/14 ----------ÝC Q+------------ÝC Q+-------------- D54/15 (CLK) 2Ý Ý 12Ý Ý +------ÝD _Ý6 +---ÝD _Ý8 Ý 1Ý_ Q+--+ 13Ý_ Q+-- Ý + --ÝR Ý Ý + --ÝR Ý Ý +-----+ Ý +-----+ +---------------+ D54/15 1533TM2 When This excluded elements C5 and R134 (last closed with a jumper). MORE chip soldered findings Food on D42. Conclusions connected with closest pads required signals. Printed conductor coming to the conclusion that 15 D54, cut. ------------------------------------------------------------------------------- On the introduction of the regime "turbo". We have a scheme on two chips (TM2, and LA3) allows you to enter this mode. But for reliable operation of computer in this mode requires the processor Z80H or TOSHIBA TMPZ84C00AP-8. In this mode will not boot some Games in mode AMSTRAD due to the reduced waiting time at positioning head drive. This mode is useful mainly to those who wrote fairly large program for reduce compile time. If you want to do this option, contact the firm PATISONIC. ------------------------------------------------------------------------------- On increasing the capacity of a disk mode AMSTRAD. To do this, you must enter switch sides disc. Suit any closing switch with one group and fixation. One conclusion that normally open group joined with a signal-SIDE, and the second - to GND. When the closed switch used second side disc. In firm computer AMSTRAD CPC 6128 was applied unilateral drive and Gondola turning upside discs with a diameter 3,00 (!) inches. Closure switch equivalent reversal disc. CAUTION When MSX-DOS switch must be opened. ------------------------------------------------------------------------------- Translation Notes The two so-called "1533xxx" chips are (similar) to russian "K555xxx" chips, maybe 1533 series and 555 series refer to western 74LS and 74HC variants or so. 1533LI1 = K555LI1 = 74LS08 = Quad AND gates 1533TM2 = K555TM2 = 74LS74 = Dual flipflop Expressions like "D41/11" do refer to Pin 11 of chip D41 in the schematics.