EasyManuals Logo

Atari 800XL Service Manual

Atari 800XL
41 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #30 background imageLoading...
Page #30 background image
2M1PTQM
I/O Port Test Failure
PIA
Ports
SIO
Port
POT
Lines
Trigger
Lines
Voltage:
P1,P2
Voltage:
MC
Timers
POSSIBLE CAUSES
U23,
C26-29,
C82-92
LI
9-
22
U22.U23.C75-
78
U22.L15-18.C7I-74
C63-66
U17,
L23,
L30.C96.C97
L25.J5.J6
SOLUTION
Repair
or
replace
Repair
or
replace
Repair
or
replace
Repair
or
replace
Inspect
J5,
U6 for
damaged
pins;
replace
as
necessary.
Repair
or replace
Replace
Q7.L11.U2
U22
30

Table of Contents

Other manuals for Atari 800XL

Preview: Owner's Manual
Owner's Manual25 pages
Preview: Wiring Diagram
Wiring Diagram11 pages
Preview: Field Service Manual
Field Service Manual30 pages
Preview: Technical Service Data
Technical Service Data33 pages
Preview: Owner's Guide
Owner's Guide18 pages

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Atari 800XL and is the answer not in the manual?

Atari 800XL Specifications

General IconGeneral
ManufacturerAtari
TypeHome computer
Release year1983
CPUMOS Technology 6502C
RAM64 KB
ROM24 KB
Operating SystemAtari OS
CPU Speed1.79 MHz (NTSC) / 1.77 MHz (PAL)
GraphicsANTIC and GTIA chips
Display resolution160×192 to 320×192 pixels
SoundPOKEY chip
StorageCassette tape, floppy disk
PortsSerial, parallel, monitor, joystick ports

Related product manuals