Zenith A19A02D Service Manual page 3

SECTION 1
OVERVIEW ............................................................. 1-1
MODEL INFORMATION ....................................... 1-1
SC3492A MODEL REMOTE CONTROL ........................... 1-2
MBR3447 MODEL REMOTE CONTROL ........................... 1-3
MBR3447A MODEL REMOTE CONTROL ......................... 1-4
MBR3446 MODEL REMOTE CONTROL ........................... 1-5
REMOTE PROGRAMMING ........................................... 1-6
AUTO FIND ..................................................... 1-6
CABLE BOX ..................................................... 1-6
VOLUME OVERRIDE ........................................... 1-6
SPECIAL FEATURES ........................................... 1-6
REMOTE PROGRAMMING CODES ................................. 1-7
SECTION 2
INSTALLERS MENU .................................................. 2-1
FACTORY RECOMMENDED SETTINGS 221-01164-01 ....... 2-3
FACTORY RECOMMENDED SETTINGS 221-01164-02 ....... 2-4
FACTORY RECOMMENDED SETTINGS 221-01305-01 ....... 2-7
SECTION 3
SERVICE INFORMATION ............................................ 3-1
GENERAL INFORMATION .................................... 3-1
HIGH-VOLTAGE AND X-RADIATION PROTECTION ..... 3-1
THEORY OF OPERATION (SHUTDOWN CIRCUIT) ...... 3-1
HV MEASUREMENT PROCEDURE .......................... 3-2
SERVICING THE MODULE ................................... 3-2
SERVICING THE POWER SUPPLY GA1 19"/20" ....... 3-2
POWER ON (9-1869/70/71 AND 9-1950) ............. 3-2
SWITCHED VOLTAGES ........................................ 3-2
SWEEP DERIVED VOLTAGES ................................ 3-2
SERVICING THE POWER SUPPLY .......................... 3-2
SWITCHED VOLTAGES ........................................ 3-2
SWEEP DERIVED VOLTAGES ................................ 3-3
VIDEO PROCESSOR ICX2200 .............................. 3-3
VERTICAL CIRCUIT ............................................ 3-3
HORIZONTAL CIRCUIT ........................................ 3-3
SERVICE ADJUSTMENTS (MECHANICAL) ............... 3-4
FOCUS ADJUSTMENT ......................................... 3-4
GA1/GA2 RGB CUTOFF (1164 MICRO) ................... 3-4
SERVICE ADJUSTMENTS ........................................... 3-4
GA3 OF RGB CUTOFF (1305 MICRO) ..................... 3-4
PURITY & CONVERGENCE SETUP PROCEDURE ........ 3-6
VERTICAL-TILT WEDGE ADJUSTMENT .................... 3-7
HORIZONTAL-TILT WEDGE ADJUSTMENT ................ 3-7
UNUSUAL TILT CASE ......................................... 3-7
IMPROVING CRT CORNER PURITY ........................ 3-7
MODIFICATION ................................................. 3-7
IC DESCRIPTIONS ................................................... 3-8
CM150
TABLE OF CONTENTS
GENERAL INFO
INSTALLERS MENU
SERVICING
TOC - 1
SECTION 4
GA-1 MODELS ........................................................ 4-1
A19A02D ........................................................ 4-1
A19A02D4 ..................................................... 4-1
A19A02D7 ...................................................... 4-1
A19A02D74 .................................................... 4-1
A19A02D8 ...................................................... 4-1
A19A02D8 ...................................................... 4-1
A19A11D ........................................................ 4-2
A19A11D4 ...................................................... 4-2
A19A11D7 ...................................................... 4-2
A19A11D74 .................................................... 4-2
A19A11D8 ...................................................... 4-2
A19A11D84 .................................................... 4-2
A20A22D ........................................................ 4-3
A20A22D4 ...................................................... 4-3
A20A22D8 ...................................................... 4-3
A20A22D84 .................................................... 4-3
LGA20A02DM .................................................. 4-3
LGA20A02DM4 ................................................. 4-3
LGA20A02DM7 ................................................. 4-4
LGA20A02DM74 ............................................... 4-4
LGA20A02DM8 ................................................. 4-4
LGA20A02DM84 ............................................... 4-4
LGA20A02GM .................................................. 4-4
LGA20A02GM8 ................................................. 4-5
LGA20A04DM .................................................. 4-5
LGA20A04DM7 ................................................. 4-5
LGA20A04DM74 ............................................... 4-5
LGA20A04DM8 ................................................. 4-5
LGA20A04DM84 ............................................... 4-6
LGA20A05DM .................................................. 4-6
LGA20A05DM7 ................................................. 4-6
LGA20A05DM74 ............................................... 4-6
LGA20A05DM8 ................................................. 4-7
LGA20A05DM84 ............................................... 4-7
LGA20A11DM .................................................. 4-7
LGA20A11DM7 ................................................. 4-7
LGA20A11DM74 ............................................... 4-7
LGA20A11DM8 ................................................. 4-8
LGA20A11DM84 ............................................... 4-8
LGA21A22DM .................................................. 4-8
LGA21A22DM4 ................................................. 4-8
LGA21A22DM8 ................................................. 4-8
LGA21A22DM84 ............................................... 4-9
GA-2 MODELS ........................................................ 4-9
A25A02D ........................................................ 4-9
A25A02D4 ...................................................... 4-9
A25A02D64 .................................................... 4-9
A25A02D7 ...................................................... 4-9
A25A02D74 .................................................... 4-9
A25A02D8 .................................................... 4-10
A25A02D84 .................................................. 4-10
A25A11D ...................................................... 4-10
A25A11D4 .................................................... 4-10
A25A11D64 .................................................. 4-10
A25A11D7 .................................................... 4-10
A25A11D74 .................................................. 4-11
A25A11D8 .................................................... 4-11
A25A11D84 .................................................. 4-11
A25A12D ...................................................... 4-11
PARTS
GA -TOC