Rhodes chroma service manual

Page 2

CHROMA SERVICE MANUAL
TABLE OF CONTENTS

SECTION 1 SYSTEM OVERVIEW

GENERAL DESCRIPTION

DUAL CHANNEL ARCHITECTURE

SYSTEM INTERFACING
SYSTEM BLOCK DIAGRAM
SYSTEM STRUCTURE

SECTION 2 CIRCUIT DESCRIPTIONS

COMPUTER BOARD ASSEMBLY
COMPUTER BOARD SCHEMATIC

l/O BOARD ASSEMBLY

|/O BOARD SCHEMATICI

I/O BOARD SCHEMATIC 2

CHANNEL MOTHER BOARD ASSEMBLY
CHANNEL MOTHER BOARD SCHEMATIC

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SECTION 6 SCHEMATICS AND DRAWINGS

6 2
6 3
6-4
6-5
67
6 8
6-9

DUAL CHANNEL BOARD SCHEMATIC 1 6- 10
COMPUTER BOARD 2 -I DUAL CHANNEL BOARD SCHEMATIC 2 6 ~11
l/O BOARD 2-2 DUAL CHANNEL BOARD ASSEMBLY 6- 11
DUAL CHANNEL BOARD 2 - 7 LEFT STACK SWITCH ASSEMBLY 6 >12
CHANNEL MOTHER BOARD 2- 10 LEFT STACK SWITCH SCHEMATIC 6-13
POWER SUPPLY 2~11 RIGHT STACK SWITCH ASSEMBLY 6- 13
E0 BOARD 2- 13 RIGHT STACK SWITCH SCHEMATIC 6- 13
STACK SWITCH BOARDS 2 - 14 E0 BOARD SCHEMATIC 6 - 15
E0 BOARD ASSEMBLY 6 , 15
SECTION 3 DISASSEMBLY POWER SUPPLY ASSEMBLY 5.16
POWER SUPPLY SCHEMATIC 6 - 17
OPENING FOR SERVICE 3 .1 INTERCONNECTION DIAGRAM 1 6- 18
BOARD LOCATIONS 3.2 INTERCONNECTION DIAGRAM 2 6 « 19
POWER SUPPLY CONNECTIONS 3 . 3 BALANCED OUTPUT SCHEMATIC 5, 21
EXTERNAL INTERFACE CABLE SCHEMATIC
SECTION 4 DIAGNOSTICS 6-21
SET SPLIT FUNCTIONS 4-1 SECTION 7 PARTS LIST
TRIGGEHED SWEEPS 4v 2
COMPUTER BOARD 7 - 1
SECTION 5 CALIBRATION & CHECKOUT 0 BOARD 7 .1
CHANNEL MOTHER BOARD 7-2
POWER SUPPLY RIPPLE 5.1 DUAL CHANNEL BOARD 73
PREREGULATOR D.C_ VOLTAGE 5 .1 LEFT STACK SWITCH ASSEMBLY 7 » 3
+5V ANALOG D.C.VOLTAGE 5-1 RIGHT STACK SWITCH ASSEMBLY 7 - 3
DAC OUTPUT NULL TRIM 5-1 E0 BOARD 7 ,4
THE "SCRATCH PATCH 5 ~l POWER SUPPLY 7 - 4
OSCILLATOR TRIM PROCEDURE 5 A 1
ALTERNATE TRIM PROCEDURE 5 - 2 SECTION 8 MNEMONICS
CHANNEL ASSIGNMENT 5 - 2
TUNING CHECK 5 , 2 SIGNAL LISTING B 71
SWAPPING CHANNEL BOAFIDS 5 , 2
ALTERNATE TUNING CHECK 5-2
DAMPER BAR ADJUSTMENT 5 - 2
STACK SWITCH ADJUSTMENT 5 - 2

The information contained herein is confidential and pro-
prietary to CBS Inc. It is disclosed [0 you snler for purposes
0! Instruction as (0 operation of the equipment and mainr
tenance as appropriate, It is not to be disclosed to others
without the express permission of CBS Inc.

Copyright 1983 CBS Inc