AMSTRAD CPC6128 Service Manual

17, CPC6128 CPU CIRCUIT DIAGRAM RED BLUE 2 4 6 IClll Z80 DATA BUS ) EXPANSION 8US RIa? JIOI VI OEO OUTPUT CONNECTOR <S PIN DIN' __ 2_2_0 __ ---'51> GND CURSOR O? 06 OS 04 03 02 01 DO <+5V) 12 I-w...;:::.- .....<-O-'- ( +SV > 1-" ::5 4 1-_ < 0&apo…

30, Fig. 6. Sym 1 i 2 3 4 5 6 7 8 9 10 Description Head Assembly Stepper Motor Stepper Motor Rotation Bolt Spindle Motor Flywheel Pulley Read/Write Protect/Index/LED P.C.B. Track 00 Sensor Assembly Spring Loading Unit MECHANICAL REPLACEMENTS 5 MECHANISM 3 ~ 10 This drawing is for informatio…

20, G) -I en 01 () ::xJ () C -I C » C) ::xJ » :s: ~ ~ ElREEH ~ITCft DISPlAY'tl.I£ V?OI 91oote11 ~ , ~~~R~-- ------.-~I..:3 .. ~ ~~ [ ~$~ ~ ~ 0 ~ ~ ~ ~ ~ ~ ~ 5 B ~ L701 71011202 j---- 0712 25V10 CI-f") L702 II~ 2.0IXXl0B ~it O~~ ... ,"" ~~"1i::_i~L!~tF ::: ~y~ ~1 i~ij!l..:…

6, AMSTRAD CPC6128 CPC6128 FUNCTION DIAGRAMS FUNCTION FOR A I1ICROCOI1PUTER AND IC's ICI08 ICI07 IC 1/1 ADRESS BUS -A2 I-AI o -Ao -GND 8 -RFSH)SYSTEI1 7-11] CONTROL 6 - RESET~to~TROL -DUSRO CPU - BUS 4 - WA IT CONTROL 3-BUSAK 2 -lJRjSYSTEI1 I -IW CONTROL L- ........J ADRESS BUS Vo PORTA WRITE CONTRO…

10, 3-C Read error Test with disk EME - CF2 y N N FLOW CHART (cont) y Replace drive 10 Replace disk (inspect by drive) Replace drive N N Replace drive N Replace head assembly Replace drive Replace TROO sensor …

4, CPC61 28 - BASIC HARDWARE ANALYSIS RED NO LED LIGHTS >----1_--< ? MAINS FUSE OK ? NO REPLACE MAINS FUSE YES { CHECK FAULTY MONITOR • CABLE TERMINATION ALL OK • INTERNAL CONNECTORS • BRIGHTNESS CONTROL NOTHING{FAULTY ULA Z80A 6845 CRYSTAL RAM FAULTY VIDEO CONNECTOR FAULTY C…