AMSTRAD CPC464 - Page 2

CONTENTS
Page
Techmcal Specification 2
Flash Test 2
CPC464 Cabinet Parts List 2
CPC464 Keyboard Cabinet Drawing 3
Cassette Mechanism and Parts List 4,5,6
Cassette Deck Alignment Instructions 6
CPC464 Cassette PCB 7
CPC464 Cassette Deck Circuit Diagram 8
CPC464 Basic Hardware Analysis
Cassette & Software Analysis 10
CPC464 Function Diagrams 10 & 11
CPC464 Main PCB 12,13 & 14
CPC464 Circuit Diagram 15 &16
CPC464 Electrical Parts List 17
GT64 Cabinet Drawing and Parts List 18
GT64 Circuit Diagram & Voltages 19
GT64 Main PCB & Alignment Instructions 20
GT64 Electrical Parts List 21
CTM640 Cabinet Drawing & Parts List 22
CTM640 Electrical Parts List 23 & 24
CTM640 Alignment Instructions 23
CTM640 Voltages 24
CTM640 Circuit Diagram back pull out
CTM640 PCB back pull out
SAFETY TEST
All monitors are safety tested
to the following specifications.
1). Flash Test
Test at 4kV between the live
and neutral of the mains lead
joined together and ALL
accessible metal points on the
exterior of the set.
2). Insulation Resistance Test
Test between the live and
neutral of the mains lead
joined together and ALL
accessible metal points on the
esterior of the set to show a
resistance of at least 4Mohm.
If after servicing there is any
doubt about continued
electrical safety the above
tests should be carried out.
TECHNICAL SPECIFICATION
LSI CHIPS:
Z80A processor running at 4MHz
64K bytes of RAM (over 42K available to user)
32K bytes of ROM containing BASIC and the
operating system
6845 CRT controller device
Gl sound generator chip
AY-3-8912 3 voice, 7 octave
8255 parallel 1/0 device interface to the Gl
sound chip
DISPLAY SPECIFICATION:
Mode
Normal High Res. Multiclr.
No. of 4 from 2 from 16 from
Colrs. 27 27 27
Vert. 200 200 200
Dots.
Horiz. 320 640 160
Dots.
Horiz. 40 80 20
Chars.
KEYBOARD:
74 keys — qwerty style, numeric cluster, cursor
and copy cursor, large enter, shift, caps lock, tab,
escape, delete, clear, control.
DATACORDER:
Write speed software selectable — 1K baud or 2K
baud, read speed automatically established by
software. Write protect interlock. Motor on/off
controlled by software.
ADD-ON ABILITY:
Compact floppy disk drive system including CP/M*
and LOGO language.
Centronics compatible printer.
Joystick(s).
Additional ROM’s.
Additional RAM up to 8160K.
EXTERNAL SOCKETS:
PCB edge connectors for general purpose expansion
and Centronics parallel printer.
9 Pin socket for joystick
6 Pin socket for — RGB and sync
— composite video
— luminance and sync
3.5mm socket for stereo sound output
5mm socket for CPC464 power supply (supplied
exclusively from screen)
DIMENSIONS (mm):
w h d
Keyboard : 580 70 =«-170
CTM640 > 375 = 340 365
GT64 > 305 315 335
WEIGHTS (kg):
Keyboard t 2.4
CTM640 > 10.6
GT64 : 6.3
POWER SUPPLY:
Screen System: 240V AC 50Hz
(keyboard and datacorder power supplied by screen
system)
*CP/M is a registered trademark of Digital Research
Inc. AMSTRAD and AMSOFT are trademarks of
Amstrad Consumer Electronics PLC.
In keeping with our policy of continually improving our service, and
technical quality of our products, we reserve the right to change
component types, manufacturers, sources of supply or technical
specification at any time
Keyboard, Colour Monitor. Green VDU — Designed in U.K
Made in Korea
AMSTRAD CONSUMER ELECTRONICS PLC
BRENTWOOD HOUSE, 169 KINGS ROAD,
BRENTWOOD, ESSEX CM14 4EF
Telephone: Brentwood (0277) 228888
Telex: 995417 AMSELE G
CPC464 CABINET PARTS LIST
Sym| Description
1 Top Cabinet 3 Ribs 170001
2 | On/Off Switch 170002
3. | Vol. Control Pot. 170003
4 | Knob Vol. Control 170004
5 |LED Red 170005
6 | Cassette Lid 170006
7 Key Board Assy. 170007A
Z.7D101
7 |Key Board Assy. 170007B
270102
8 | Rubber Contact mat. 170008
Key Board
9 |Rubber Contact Mat 170009
Digit
10 | Rubber Contact Mat 170010
Spacer
11 Bottom Cabinet 170011
3 Ribs
12 |Cassette Mechanism 170012
13 | Tape Counter 170013
14 |Counter Belt 170014
15 | Record Button Cass. 170015
16 | Play Button Cass. 170016
17 |Rewind Button Cass. 170017
18 |Fast Forward Button 170018
Cass.
Stop/Eject Button 170019
Cass.
Pause Button Cass. 170020
Cass. Door Spring 170021
1/0 Socket 170022
User Port Socket 170023
D.C. Socket 170024
DIN Socket 170025
Inlay Main 170026
Inlay Cassette 170027
Keyboard Contact 170028
P.C.B. /A
Keyboard Contact
P.C.B. /B
Bottom Cabinet
5 Ribs
Top Cabinet 5 Ribs
Speaker
170029
170030
170031
170124