Section 1; Overview; Introduction - Zenith C27A25 Service Manual

SECTION 1

OVERVIEW

5C2
IC5100

INTRODUCTION

The XC chassis is a single sided printed circuit board (PCB) very similar to the CA Chassis. During the manufacturing
process, the microprocessor will be programmed for any added features. Additional plug in boards with Jack Packs will
be added to the chassis to accommodate the different features: Stereo, Mono, Video/Audio in, etc.
The ICX2200 integrated circuit (IC) handles all of the audio/video, sync, and drive processing. The IC6000 is the main
microprocessor and the IC6001 is the EEROM memory. The keyboard and IR detector are tied directly to the IC6000. The
IC2100 handles the vertical sweep. At power on, voltages for the vertical and video output circuit are derived from this
sweep circuit.
Feature and component information is listed below for each of the XC models.
MODEL
C27A25
C27A25T6
C32A26
C32A26T6
C36A26
C36A26-8
C36A26T6
C36A26T6-8
All Sets Feature: Picture-In-Picture, Digital Comb Filter, 530 lines of resolution, 6 A/V Jacks (plus 4 front jacks),
EZ Feature Package, MTS/SAP audio, SEQ Front Surround, Universal Remote, XDS and V-Chip Functionality.
CM154
OVERVIEW
G2
DAG1
1
ICX2200
2C5
WT1200
R-OUT
G-OUT
B-OUT
GND
V1
GND
Y1
C1
S1
CRT
5F2
XC Chassis Model Information
SCR CABINET JACKS PIP
MODULE LEVEL REPAIR
27 TableTop 6 1 Tuner PIP
27 TableTop 6
1 Tuner PIP
32 TableTop
6 2 Tuner PIP
32 TableTop
6 2 Tuner PIP
36 TableTop
6 2 Tuner PIP
36 TableTop 2 Tuner PIP 009-02170-01 124-00233-06 905-10528 206-03591
6
36 TableTop
6 2 Tuner PIP
32 Console
6 2 Tuner PIP
2K6
ICX3802
IC6000
FX3602
IC2500
A-19268
IC1400
IC 800
FRONT JACK
MENU
YC
SW6
VIDEO RIGHT LEFT
MODULE REMOTE
009-2165 124-00233-05 905-10525 206-03590
809-10551 124-00233-05 905-10660 206-03590
124-00233-06 905-10528 206-03591
009-02168
P009-02214 124-00233-06 905-10661 206-03591
009-02170 124-00233-06 905-10528 206-03591
809-10558 124-00233-06 905-10661 206-03591
809-10559 124-00233-06 905-10661 206-03591
1-1
FX3401
LX 3401
3R8
TX3601
IC3612
3T8
QX 3202
C
E B
3Y3
2F5
ICX2100
Tx3201
IR1 VOL-DWN
CH-UP CH-DWN ON/OFF
O UT
VCC
SW5 SW4 SW1
SW3 SW2
G ND
VOL-UP
6K2
MICRO OP GUIDE
XC - OVERVIEW