CONTENTS xvii
CHAPTER 8.2 ENHANCED CONTROL HEADS: SCHEMATICS, PCBS AND PARTS 
LISTS
PCB/ Enhanced Control Head Main Board - Bottom and Top Side 
(PCB: 8466580A01_A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2-2
Enhanced Control Head Main Board - Control Head (PCB: 8466580A01_A)  . . . . . .8.2-3
Enhanced Control Head Main Board - Processor Memory Block: Main CPU 
(PCB: 8466580A01_A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2-4
Enhanced Control Head Main Board - Processor Memory Block: Memory 
(PCB: 8466580A01_A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2-5
Enhanced Control Head Main Board - Processor Memory Block: LCD 
(PCB: 8466580A01_A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2-6
Enhanced Control Head Main Board - Processor Memory Block: Supply 
(PCB: 8466580A01_A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2-7
Enhanced Control Head Main Board - Connectivity Block: GPIO 
(PCB: 8466580A01_A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2-8
Enhanced Control Head Main Board - Connectivity Block: USB Block 
(PCB: 8466580A01_A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2-9
Enhanced Control Head Main Board - User Input Block: Keypad 
(PCB: 8466580A01_A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2-10
Enhanced Control Head Main Board - User Input Block: SBEP 
(PCB: 8466580A01_A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2-11
Enhanced Control Head Main Board - DC Block: Power Supply 
(PCB: 8466580A01_A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2-12
Enhanced Control Head Main Board - DC Block: Power On/ Off 
(PCB: 8466580A01_A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2-13
Enhanced Control Head Main Board - Remote Block (PCB: 8466580A01_A)   . . . .8.2-14
PCB/ Data Expansion Head Enhanced Main Board - Bottom and Top Side 
(PCB: 8466586A01_A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2-15
Data Expansion Head Enhanced Main Board - Main PCB (PCB: 8466586A01_A) . 8.2-16
Data Expansion Head Enhanced Main Board - DC Power (PCB: 8466586A01_A) . 8.2-17
Data Expansion Head Enhanced Main Board - Gabel Hybrid 
(PCB: 8466586A01_A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2-18
Data Expansion Head Enhanced Main Board - SB9600 Interface 
(PCB: 8466586A01_A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2-19
Data Expansion Head Enhanced Main Board - Car Interface 
(PCB: 8466586A01_A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2-20
 PCB/ Data Expansion Head Enhanced Connector Board - Bottom and Top Side 
(PCB: 8464300B06_A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2-21
Data Expansion Head Enhanced Connector Board - Connector Board 
(PCB: 8464300B06_A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2-22
PCB/ Remote Head Enhanced Main Board - Bottom and Top Side 
(PCB: 8471016L01_A)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2-23
Remote Head Enhanced Main Board (PCB: 8471016L01_A)  . . . . . . . . . . . . . . . . . 8.2-24
PCB/ Remote Back Head Enhanced Main Board - Bottom and Top Side 
(PCB: 8466583A01_A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2-25
Remote Back Head Enhanced Main Board - Block Diagram 
(PCB: 8466583A01_A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2-26
Remote Back Head Enhanced Main Board - Audio (PCB: 8466583A01_A)  . . . . . . 8.2-27
Remote Back Head Enhanced Main Board - USB/ RS232 (PCB: 8466583A01_A)  8.2-28
Remote Back Head Enhanced Main Board - Interconnect (PCB: 8466583A01_A)  .8.2-29
Remote Back Head Enhanced Main Board - IO (PCB: 8466583A01_A)  . . . . . . . . . 8.2-30
PCB/ Enhanced Control Head Keypad Board - Bottom and Top Side 
(PCB: 8466581A01_A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2-31
Enhanced Control Head Keypad Board - Keypad Board (PCB: 8466581A01_A)  . . 8.2-32
Parts List  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.2-33
Enhanced Control Head (PCB: 8466580A01) . . . . . . . . . . . . . . . . . . . . . . . .8.2-33
6866539D31.book  Page xvii  Tuesday, March 20, 2007  6:32 PM