Arcam CD73 Service Manual

SERVICE MANUAL
CD73
COMPACT DISC PLAYER
CONTENTS Page
SPECIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
FRONT PANEL AND REAR PANEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
DISASSEMBLY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
RF PATTERN TESTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
IMPORTANT NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-9
PCB LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-12
SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13-18
IC BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19-24
TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26-31
MECHANISM EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
MECHANISM EXPLODED VIEW PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
EXPLODED VIEW PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Arcam CD73 Specifications

General

Frequency Response	20Hz - 20kHz ±0.5dB
Output Level	2.2V RMS
Digital Output	Coaxial and optical
DAC	Wolfson WM8740
Dynamic Range	100dB
Dimensions	430mm x 290mm

Summary

SPECIFICATION

CONTROLS

Details the operational controls of the CD player.

PHYSICAL SPECIFICATIONS

Lists the physical dimensions and weight of the unit.

DISASSEMBLY INSTRUCTIONS

BLOCK DIAGRAM

WIRING DIAGRAM

RF PATTERN TESTING

TESTING PROCEDURE

Procedure for testing RF signal output using an oscilloscope.

IMPORTANT NOTES

JUMPER SETTING BETWEEN CD73 & CD83

Configuration settings for jumper pins specific to models CD73 and CD83.

INSTRUCTION FOR HANDLING OPTICAL SYSTEM BLOCK PICK-UP

Safety guidelines for handling the laser pickup assembly to prevent static damage.

PRECAUTIONS FOR CHECKING BEAM EMISSION

PRECAUTIONS WHEN CHANGING LASER PICK-UP

MAIN BOARD IC Schematics: U401-U405

DSP BOARD

IR AMP

POWER SECTION

RF SECTION

IC BLOCK DIAGRAM - KEY BOARD

U701: M38B79FFFP

Block diagram and pinout for the M38B79FFFP microcontroller.

TROUBLESHOOTING GUIDE

ELECTRICAL PARTS LIST

MECHANISM EXPLODED VIEW PARTS LIST