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Service Manual Model 1540/1541 Disk Drive

In English
Commodore PN-314002-01
Publisher: Commodore Business Machines, Inc.
January, 1985


Preliminary.

(no covers)

Table of Contents
SPECIFICATIONS1
BLOCK DIAGRAM2
CARE AND MAINTENANCE3
OVERVIEW4
FLASH CODE4
CIRCUIT THEORY
POWER SUPPLY
5
RESET CIRCUIT
6
CLOCK CIRCUITS
7
MICROPROCESSOR CONTROL OF RAM & ROM
8
SERIAL INTERFACE
9
MICROPROCESSOR R/W AND MOTOR CONTROL LOGIC
10
READ/WRITE CONTROL LOGIC
11
READ AMPLIFIER
12
WRITE AMPLIFIER
13
POWER UP/DOWN WRITE PROTECTION
14
STEPPER MOTOR CONTROL CIRCUITS
15
SPINDLE MOTOR CONTROL CIRCUITS
16
TROUBLESHOOTING GUIDE17
RESISTANCE CHECKS19
CASEWORK/ACCESSORY PARTS LIST20
MODEL IDENTIFICATION21
DEVICE NUMBER CHANGE21
PCB ASSEMBLY 1540001
BOARD LAYOUT
22
PARTS LIST
23
PIN CONFIGURATIONS
25
SCHEMATIC
25
PCB ASSEMBLY 1540048
BOARD LAYOUT
26
PARTS LIST
27
UPGRADE NOTES
29
SCHEMATIC
29
PCB ASSEMBLY 250442, 250446
BOARD LAYOUT
30
PARTS LIST
31
IC PINOUTS AND INTERNAL DIAGRAMS
33
SCHEMATIC
33
POWER SUPPLY ASSEMBLY 1540002
PARTS LIST
34
TRANSFORMER
34
ASSEMBLY DRAWING
34
ALPS DRIVE ASSEMBLY
PARTS LIST
35
WIRING DIAGRAM AND LAYOUT
35
MOTOR CONTROL PCB SCHEMATIC
36
NEWTRONICS DRIVE ASSEMBLY
PARTS LIST
37
WIRING DIAGRAM AND LAYOUT
37
MOTOR CONTROL PCB SCHEMATIC
38



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Read the small print. Last updated Feb 23, 2006