Zenith H2735DT33 Service Manual

SERVICE MANUAL

Model Series:

Product Type: Commercial Color TV Chassis: CH Manual Series: SR21A Manual Part #: 923-03391R1 Model Line: B Product Year: 1999

REVISED EDITION

This revised edition includes the original CH manual (Part number 923-03391) and the first addendum (Part number 923-03391A1).

H1934Y H1934Y3 H1934Y33 H1934Y4 H1934Y6 H2034Y H2034Y3 H2034Y33 H2034Y4 H2034Y6 H2035DT H2035DT3 H2035DT33 H2035DT4 H2035DT6 H2050DT H2050DT3 H2050DT33 H2050DT4 H2050DT6 H2534Y H2534Y3 H2534Y33 H2534Y4 H2534Y6

H2535DT H2535DT3 H2535DT33 H2535DT4 H2535DT6 H2539Y H2539Y3 H2539Y33 H2539Y4 H2539Y6 H2735DT H2735DT3 H2735DT33 H2735DT4 H2735DT6 H3235DT H3235DT3 H3235DT33 H3235DT4 H3235DT6 H3635DT H3635DT3 H3635DT33 H3635DT4 H3635DT6

Printed in U.S.A.

CONTENTS

General Info/Remotes .................................... 1

Installer’s Menu ............................................. 2

Servicing/Troublshooting ............................... 3

Part Lists ..................................................... 4

Exploded Views ............................................. 5

Schematics ................................................... 6

Published by Technical Publications

Zenith Electronics Corporation

201 James Record Road - Huntsville, Alabama 35824-1513

PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO-VIDEO PRODUCTS

IMPORTANT SAFETY NOTICE

This manual was prepared for use only by properly trained audio-visual service technicians.

When servicing this product, under no circumstances should the original design be modified or altered without permission from Zenith Electronics Corporation. All components should be replaced only with types identical to those in the original circuit and their physical location, wiring and lead dress must conform to original layout upon completion of repairs.

Special components are also used to prevent x-radiation, shock and fire hazard. These components are indicated by the letter “x” included in their component designators and are required to maintain safe performance. No deviations are allowed without prior approval by Zenith Electronics Corporation.

Circuit diagrams may occasionally differ from the actual circuit used. This way, implementation of the latest safety and performance improvement changes into the set is not delayed until the new service literature is printed.

CAUTION: Do not attempt to modify this product in any way. Never perform

customized installations without manufacturer’s approval. Unauthorized modifications will not only void the warranty, but may lead to property damage or user injury.

Service work should be performed only after you are thoroughly familiar with these safety checks and servicing guidelines.

GRAPHIC SYMBOLS

The exclamation point within an equilateral triangle is intended to alert the service personnel to important safety information in the service literature.

The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the service personnel to the presence of noninsulated “dangerous voltage” that may be of sufficient magnitude to constitute a risk of electric shock.

The pictorial representation of a fuse and its rating within an equilateral triangle is intended to convey to the service personnel the following fuse replacement caution notice: CAUTION: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ALL FUSES WITH THE SAME TYPE AND RATING AS MARKED NEAR EACH FUSE.

SERVICE INFORMATION

While servicing, use an isolation transformer for protection from AC line shock. After the original service problem has been corrected, make a check of the following:

FIRE AND SHOCK HAZARD

1. Be sure that all components are positioned to avoid a possibility of adjacent component shorts. This is especially important on items transported to and from the repair shop.

2. Verify that all protective devices such as insulators, barriers, covers, shields, strain reliefs, power supply cords, and other hardware have been reinstalled per the original design. Be sure that the safety purpose of the polarized line plug has not been defeated.

3. Soldering must be inspected to discover possible cold solder joints, solder splashes, or sharp solder points. Be certain to remove all loose foreign particles.

4. Check for physical evidence of damage or deterioration to parts and components, for frayed leads or damaged insulation (including the AC cord), and replace if necessary.

5. No lead or component should touch a receiving tube or a resistor rated at 1 watt or more. Lead tension around protruding metal surfaces must be avoided.

6. After re-assembly of the set, always perform an AC leakage test on all exposed metallic parts of the cabinet (the channel selector knobs, antenna terminals, handle and screws) to be sure that set is safe to operate without danger of electrical shock. DO NOT USE A LINE ISOLATION TRANSFORMER DURING THIS TEST. Use an AC voltmeter having 5000 ohms per volt or more sensitivity in the following manner: Connect a 1500 ohm, 10 watt resistor, paralleled by a .15 mfd 150V AC type capacitor between a known good earth ground water pipe, conduit, etc.) and the exposed metallic parts, one at a time. Measure the AC voltage across the combination of 1500 ohm resistor and .15 mfd capacitor. Reverse the AC plug by using a non-polarized adaptor and repeat AC voltage measurements for each exposed metallic part. Voltage measured must not exceed 0.75 volts RMS. This corresponds to 0.5 milliamp AC. Any value exceeding this limit constitutes a potential shock hazard and must be corrected immediately.

A.C. Voltmeter

Good Earth Ground such as the Water Pipe, Conduit, etc.

0.16uF

1600 OHM

10 WATT

Place this probe on each exposed metal part.

X-RADIATION

1. Be sure procedures and instructions to all service personnel cover the subject of x-radiation. The only potential source of x-rays in current TV receivers is the picture tube. However, this tube does not emit x-rays when the HV is at the factory-specified level. The proper value is given in the applicable schematic. Operation at higher voltages may cause a failure of the picture tube or high-voltage supply and, under certain circumstances may produce radiation in excess of desirable levels.

2. Only factory-specified CRT anode connectors must be used.

3. It is essential that the service personnel have available an accurate and reliable high-voltage meter.

4. When the high-voltage circuitry is operating properly, there is no possibility of an x-radiation problem. Every time a color chassis is serviced, the brightness should be run up and down while monitoring the high voltage with a meter, to be certain that the high voltage does not exceed the specified value and that it is regulating correctly.

5. When troubleshooting and making test measurements in a product with a problem of excessively high voltage, avoid being unnecessarily close to the picture tube and the high voltage power supply. Do not operate the product longer than necessary to locate the cause of excessive voltage.

6. Refer to HV, B+, and shutdown adjustment procedures described in the appropriate schematics and diagrams (where used).

IMPLOSION

1. All direct view picture tubes are equipped with an integral implosion protection system; take care to avoid damage during installation.

2. Use only the recommended factory replacement tubes.

TIPS ON PROPER INSTALLATION

1. Never install any receiver in a closed-in recess, cubbyhole, or closely fitting shelf space over, or close to, a heat duct, or in the path of heated air flow.

2. Avoid conditions of high humidity such as: outdoor patio installations where dew is a factor, near steam radiators where steam leakage is a factor, etc.

3. Avoid placement where draperies may obstruct venting. The customer should also avoid the use of decorative scarves or other coverings that might obstruct ventilation.

4. Wall- and shelf-mounted installations using a commercial mounting kit must follow the factory-approved mounting instructions. A product mounted to a shelf or platform must retain its original feet (or the equivalent thickness in spacers) to provide adequate air flow across the bottom. Bolts or screws used for fasteners must not touch any parts or wiring. Perform leakage tests on customized installations.

5. Caution customers against mounting a product on a sloping shelf or in a tilted position, unless the receiver is properly secured.

6. A product on a roll-about cart should be stable in its mounting to the cart. Caution the customer on the hazards of trying to roll a cart with small casters across thresholds or deep pile carpets.

7. Caution customers against using a cart or stand that has not been listed by Underwriters Laboratories, Inc. for use with its specific model of television receiver or generically approved for use with TVs of the same or larger screen size.

8. Caution customers against using extension cords. Explain that a forest of extensions, sprouting from a single outlet, can lead to disastrous consequences to home and family.

SR21A CH - SAFETY

PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO-VIDEO PRODUCTS

X-RADIATION

To prevent possible exposure to x-radiation caused by excessive CRT Anode Voltage, the CH Chassis incorporates a “High Voltage Shutdown” circuit. This circuit senses the level of a flyback pulse from the “Flyback Transformer” representative of the actual high voltage on the CRT anode. When this level exceeds a predetermined voltage, the circuit shuts down the horizontal drive, preventing further generation of anode voltage. In this condition, the horizontal drive is ‘‘latched’’ off. The drive will remain off until power (via remote control or front panel) is re-cycled from ‘Off’ to ‘On’.

SHUTDOWN CIRCUIT OPERATION

(Refer to Figure below) Apply a voltage signal of an external power supply through the shutdown circuit (Refer to Figure shown below). Connect an accurate high voltage meter between the picture tube anode and chasis ground. Access the Video Menu and adjust Brightness and Contrast controls for minimum screen luminance. Wait until the Video Menu or display disappear. Read the high voltage meter, ramping up the external power supply from 4 to 8 volts, until the circuit shutsdown.

Measurement of the CRT Anode voltage must be performed using a high impedance high voltage meter, with no visible raster on the screen, and operating at nominal horizontal scanning frequency. Connect a strong broadcast signal (or TV signal generator operating at 15.734kHz horizontal scanning rate) to the RF input.

After discharging the CRT, connect a high impedance high voltage meter to the CRT anode. Turn the television ‘on’ and confirm a good signal is being displayed. Reduce Brightness and Contrast settings until the picture is well extinguished.

Observe the Anode voltage meter reading and compare with the table for the proper CRT screen size. If the voltage reading is higher than the maximum, verify circuit component values and proper operation.

NOTE:

The CH Chassis does NOT have a bleeder resistor to discharge the Anode voltage. High voltage can remain on the CRT Anode long after power is turned off. Before removing the CRT anode connection, turn off and unplug the television, then discharge the CRT Anode to DAG ground.

SAFETY CIRCUIT TEST PROCEDURE

Before turning the TV on, connect the HV meter’s negative probe (-) to ground (DAG ground recommended) and the positive probe (+) in the anode of the CRT. Connect a 1 Giga Ohm resistor in parallel with the HV meter. Then connect the external power supply’s negative output (-) to chassis ground, that is, the negative lead of B+ filter capacitor, CX3420. Turn on the TV. Apply a video signal or tune the TV to a raster pattern. Adjust the G2 potentiometer for minimum, and set the brightness and contrast levels to minimum. Now adjust the output voltage of the external power supply to 124 VDC for CA25V/27V or 130 VDC for CA32V/36V. Then start increasing the voltage on the external power supply until the TV shuts down, and read the HV on the meter just before the voltage starts dropping.

Equipment required:

a) Video Generator. b) HV DC meter (0 to 40 KV, high Z). c) External variable power supply (0V to 200 VDC @ 5Amps

minimum).

d) 1 Giga ohm, 5%, 2W film resistor.

NOTE:

The external power supply may require a diode for blocking voltage from the chassis power supply to the external power supply. The diode should be connected between the positive output of the external power and B+ of the chassis.

The cathode should be facing the B+ of the chassis. The recommended diode is Part No. 103-00339-04A (400 V of VRRM @ 3 Amps of average rectified forward current).

CRT ANODE VOLTAGE

CRT Screen Nominal Anode Max Anode

Size Voltage (kv) Voltage (kv)

19/20” 27.6 28.8

25” 27.6 28.8 27” 28.0 29.4 32” 30.0 31.0 36” 30.0 31.0

MODULE

AV SHUTDOWN EXTERNAL

External Power

Supply

4 - 8 Volts

100 Kohm

121-1187

1 Kohm

SR21A CH - SAFETY

121-1187

220 Ohm

1 Kohm

Rx3421

Rx3440

- iii -

TABLE OF CONTENTS

SECTION 1 GENERAL INFO

INTRODUCTION ....................................................... 1-1

CONNECTIONS ........................................................ 1-2

CAMPORT........................................................ 1-2

SUPERPORT - MPI ............................................ 1-2

MULTIPLE PROTOCOL INTERFACE ......................... 1-2

EBC (EDGE BOARD CARD) ................................. 1-2

CONNECTION CENTER ON BACK OF TV ................. 1-2

CONNECTION CENTER ON BACK OF TV ................. 1-3

PILLOW SPEAKER INTERFACE .................................... 1-4

DESCRIPTION .................................................. 1-4

THEORY OF MULTIPLEXED DATA MODE ................. 1-4

THEORY OF SIMPLE SWITCH MODE ...................... 1-4

SETTINGS MIN/MAX VOLUME LEVELS ................... 1-5

USER REMOTE - MBR3447Z ....................................... 1-6

PATIENT REMOTE - SC637Z ....................................... 1-7

GUEST REMOTE - SC652Z ........................................ 1-8

GUEST REMOTE - SC692Z ........................................ 1-9

INSTALLER REMOTE - HP602Z ................................. 1-10

INSTALLER’S PROGRAMMER - LT1500 ........................ 1-11

QUICKSET II PROGRAMMER .............................. 1-11

LEARN FROM TV ............................................. 1-11

TEACH TO TV ................................................. 1-12

SET CLONE CLOCK FROM TV ............................. 1-12

DISPLAY TV SETUP ......................................... 1-12

DISPLAY CLONE SETUP ................................... 1-12

OPERATION NOTES ......................................... 1-12

USER MENUS 221-01390 ....................................... 1-13

INSTALLATION SETUP ...................................... 1-13

SETUP MENU ................................................. 1-13

CHANNEL LABELS .......................................... 1-13

AUDIO MENU ................................................ 1-14

VIDEO MENU ................................................. 1-15

PARENTAL CONTROL ........................................ 1-15

TV PARENTAL GUIDELINE RATING SYSTEM........... 1-16

MPAA RATING SYSTEM .................................... 1-16

ALARM MENU ................................................ 1-17

CH PREVIEW MENU......................................... 1-17

CAPTIONS DISPLAY ........................................ 1-17

RADIO FEATURE ............................................. 1-17

SECTION 2 INSTALLERS MENU

INSTALLERS MENU 221-01390 .................................. 2-1

INSTALLERS MENU ADJUSTMENTS.............................. 2-1

SECTION 3 SERVICING

GENERAL INFORMATION ........................................... 3-1

COMPONENT-LEVEL SERVICING .................................. 3-1

SERVICING THE POWER SUPPLY ................................. 3-1

SWEEP DERIVE VOLTAGES ......................................... 3-1

CRT FILAMENT ........................................................ 3-1

VIDEO PROCESSOR ICX2200 ..................................... 3-1

SERVICING ............................................................. 3-2

MICROPROCESSOR .................................................. 3-2

VERTICAL CIRCUIT ICX2100 ...................................... 3-2

HORIZONTAL CIRCUIT............................................... 3-2

HIGH VOLTAGE AND X RADIATION PROTECTION ............ 3-2

THEORY OF OPERATION (SHUTDOWN CIRCUIT) ............. 3-2

G2 ADJUSTMENT ..................................................... 3-3

ADJUSTMENT OF RGB CUTOFF ................................... 3-3

IF AND AUDIO SERVICING ........................................ 3-3

STEREO LEVEL ADJUSTMENT ..................................... 3-3

PURITY & CONVERGENCE SETUP PROCEDURE ............... 3-4

VERTICAL-TILT WEDGE ADJUSTMENT ........................... 3-5

HORIZONTAL-TILT WEDGE ADJUSTMENT ....................... 3-5

UNUSUAL TILT CASE ................................................ 3-5

IMPROVING CRT CORNER PURITY ............................... 3-5

MODIFICATION ....................................................... 3-5

SECTION 4 PARTS

MODEL PARTS ........................................................ 4-1

H1934Y .......................................................... 4-1

H2034Y .......................................................... 4-1

H2035DT ........................................................ 4-1

H2050DT ........................................................ 4-1

H2534Y .......................................................... 4-2

H2535DT ........................................................ 4-2

H2539Y .......................................................... 4-2

H2735DT ........................................................ 4-2

H3235DT ........................................................ 4-3

H3635DT ........................................................ 4-3

REFERENCE CHART .................................................. 4-4

COMPONENT PARTS LIST .......................................... 4-5

SECTION 5 MECHANICAL VIEWS

H1934Y/H2050DT ................................................... 5-1

H2034Y/H2035DT/H2534Y/H2535DT/H2539Y .............. 5-2

H2735DT ............................................................... 5-3

H3635DT ............................................................... 5-4

SECTION 6 SCHEMATICS

HEALTHVIEW MONO INTERCONNECT DIAGRAM ............ 6-1

CONCIERGE MONO INTERCONNECT DIAGRAM ............... 6-2

CONCIERGE STEREO INTERCONNECT DIAGRAM ............. 6-3

H1 POWER SUPPLY .................................................. 6-4

H1 AUDIO PROCESSOR ............................................ 6-5

H1 MAIN MICROPROCESSOR ..................................... 6-6

H1 VIDEO PROCESSOR ............................................. 6-7

H1 HORIZONTAL/VERTICAL DEFLECTION ...................... 6-8

H1 JACK AND SWITCH CIRCUIT ................................. 6-9

H1 AM/FM STEREO DECODER .................................. 6-10

H1 PILLOW SPEAKER ............................................. 6-11

H1 CONNECTORS .................................................. 6-12

H1 VIDEO OUTPUT ................................................ 6-13

H2 POWER SUPPLY ................................................ 6-14

H2 AUDIO PROCESSOR .......................................... 6-15

H2 MAIN MICROPROCESSOR ................................... 6-16

H2 VIDEO PROCESSOR ........................................... 6-17

H2 HORIZONTAL/VERTICAL DEFLECTION .................... 6-18

H2 JACK AND SWITCH CIRCUIT ............................... 6-19

H2 AM/FM STEREO DECODER .................................. 6-20

H2 PILLOW SPEAKER ............................................. 6-21

H2 CONNECTORS .................................................. 6-22

H2 VIDEO OUTPUT ................................................ 6-23

MPI CARD............................................................ 6-24

BLOCK DIAGRAMS ................................................. 6-25

BLOCK DIAGRAMS (CONTINUED).............................. 6-26

H1 PCB LAYOUT .................................................... 6-27

H1 SMD LAYOUT ................................................... 6-28

H2 PCB LAYOUT .................................................... 6-29

H2 SMD LAYOUT ................................................... 6-30

SR21A TOC-1 CH -TOC

- TOC-2 -

TX3204

Sweep

SECTION 1

IC2100

Vertical Out

TX3401

Transformer

Chopper

INTRODUCTION

IC1400

MTS Stereo Decoder

volume limiter & audio processor

TU6000

Tune r

N T S C

C o m b F i

ICX2200

12C BUS Control NTSC

D L 2

Spark gap

Fuse 3 Amp

Fuse 4 Amp

INTRODUCTION

The CH series chassis will be used on the “B” line Commercial Products. This covers the 19, 20, 25, 27, 32, and 36 inch screen sizes. The concept of this chassis is to make one board for all models regardless of screen size. During the manufacturing process, the microprocessor will be programmed for the added features. added to the chassis to accommodate the different features; PCZTV Scan Converter, Stereo, Mono, FM radio, etc. sets do not have a comb filter.

The CH series chassis features seven ICs for all signal, sync, and sweep processing.

Additional plug in boards with Jack Packs will be

These

IC6000

Microcontroller

ICX2200 - Handles all of the audio/video, sync and sweep drive processing.

IC6000 - Main microprocessor. It is tied directly to the keyboard and the infrared detector.

IC6001 - System memory. IC2100 - Handles vertical sweep. IC2500 - Video switch. ICX3412 - Power supply. This is a switching type supply

powered by a bridge rectifier circuit. At turn on, voltages for the vertical and video output circuit are derived from the sweep circuit.

CH Chassis Model Information

MODEL SCR JACKS AUDIO EXTRA FEATURES REMOTE MICRO OP GUIDE

COMPONENT LEVEL REPAIR

H1934Y 19 3 Mono/FM SuperPort Slot, MPI Card SC652Z 221-01390 206-03490 H2034Y 20 3 Mono SuperPort Slot, MPI Card SC652Z 221-01390 206-03490 H2035DT 20 4 MTS/SAP/FM SuperPort Slot, MPI Card SC692Z 221-01390 206-03490 H2050DT 20 0 Mono/FM SuperPort Slot, MPI Card, Pillow Speaker Jack SC637Z 221-01390 206-03491 H2534Y 25 3 Mono SuperPort Slot, MPI Card SC652Z 221-01390 206-03490 H2535DT 25 4 MTS/SAP/FM SuperPort Slot, MPI Card SC692Z 221-01390 206-03448 H2539Y 25 3 Mono None SC652Z 221-01390 206-03490

MODULE LEVEL REPAIR ONLY

H2735DT 27 4 MTS/SAP SuperPort Slot, MPI Card SC652Z 221-01390 206-03489 H3235DT 32 4 MTS/SAP SuperPort Slot, MPI Card SC652Z 221-01390 206-03489 H3635DT 36 4 MTS/SAP SuperPort Slot, MPI Card SC652Z 221-01390 206-03489

SR21A 1-1 CH - MAIN

CONNECTIONS

CAMPORT

Some models have video and right/left audio input jacks at the front of the receiver. These jacks can be used to view video tapes from a VCR or Camcorder. When the video cable is plugged into the jack, the shorting jack J1 opens, placing a high at pin 10 of the IC6000 microprocessor. This switches the TV into the auxiliary mode. As long as the cables are attached, the TV set will be locked in auxiliary mode. Use of a remote control or buttons on the front of the set will not permit switching into tuner mode until the video cable is disconnected.

SUPERPORT - MPI

Zenith Commercial Product receivers are now being adapted to interact with other equipment. Prime examples of this can be found in Lodging and Health Care situations where the set is controlled from the main office.

All this is made possible by the new technology that is being built into these receivers. The SuperPort and/or Multiple Protocol Interface (MPI) jack and associated circuitry allow remote control of the set.

MULTIPLE PROTOCOL INTERFACE

Television functions and features are controlled by the communication of commands and status information through a Superport by the MPI interface.

EBC (EDGE BOARD CARD)

Allows easy access for removing/installing accessory modules providing a rail mounted slide-through card. These cards might contain one of the above features.

CONNECTION CENTER ON BACK OF TV

The connection on the back of the TV contains the input and output interfaces.

SR21A 1-2 CH - MAIN

CONNECTIONS (continued)

CONNECTION CENTER ON BACK OF TV

The connection center on the rear of the TV allows for connection of the viewing source. The diagrams list the use of each jack on the connection center.

1. ANTENNA/CABLE JACK

Use the jack for 75-ohm antenna-type signal connections to the TV. Attach antenna, cable TV line, or other video equipment to jack. The input cable may come from an outdoor or master antenna, cable TV line, cable decoder box, or the RF output from a VCR.

2. SUPERPORT LOCATION

Provides for easy installation of local service provider accessory module without removing the cabinet back. Module is housed inside the TV cabinet and receives operating power and all necessary interface signals through internal connections.

3. MPI (Multiple Protocol Interface) JACK

Standard RJ11 jack to provide interface with in-room entertainment and video services. Also used with installer’s programmer (page 1-11) for programming other TVs in the system with the same features as the master TV.

Super

Port

ANTENNA

CABLE

M. P. I.

ANTENNA

CABLE

VIDEOINMATRIX

OUT

AUDIO

4. VIDEO IN AND AUDIO IN

Use the Video and Audio In jacks for baseband video and audio input signals from a VCR or other signal source.

5. MATRIX SPEAKER OUT

Use this jack for connection of an 8-ohm extension speaker to get television sound at a remote location. The speaker in the TV remains active, while a monaural audio output is heard from the remote speaker.

6. PILLOW SPEAKER JACK

Use the 6-pin jack for connection of an optional pillow speaker or wired remote control unit. Recommended pillow speaker is Curbell Model A-6050-001 or equivalent. Pillow speaker/control unit is not provided with the TV.

7. PILLOW SPKR/TV SPKR SWITCH

In the PILLOW SPKR Position - The pillow speaker is ON. In the TV SPKR position - The built-in TV speaker is On.

8. EBC KNOB

For handling-removal of EBC cover.

Super

Port

Super

Port

M. P. I.

ANTENNA

CABLE

M. P. I.

PILLOW SPEAKER

VIDEOINMATRIX

OUT

AUDIO

SR21A 1-3 CH - MAIN

CONNECTIONS (continued)

PILLOW SPEAKER INTERFACE

Description

The pillow speaker interface within the TV, provides three remote control lines and an audio output. It is intended for connection to a patient-pendant remote control, or entertainment audio and nurse call system. All lines are isolated from the AC power line and ground. Isolation of the control lines is provided by optoisolators. These are no relays or inductive components in the control lines. Isolation of the audio output is provided by an optoisolator too.

Purpose of Interface Pins Pin #1 External TVON /OFF closure. Pin #2 Open (not used). Pin #3 External Channel Up Closure or Data In. Pin #4 Common for External Control. Pin #5 Audio Output. The impedance from this pin to earth ground is a nominal 10 Megohm static leakage resistor in parallel with an 1100 picofarad capacitor.

Pin #6 External Channel Down Closure.

Theory of Multiplexed Data Mode

345

Pins 3 and 4 support a built-in interface which allows multiple functions on a single wire by means of serial digital coding. Pin 3 will source up to 2 mA during the digital "0" interval to supply operating power for the digital encoder located in the pillow speaker. The coder must sink a minimum of 5 mA to pin 4 during the digital "1" interval and provide the correct serial data stream. Pillow speakers meeting this specification are available from independent manufacturers such as Curbell, Inc. (Manufacturers wishing to produce compatible pillow speakers or other products should contact Zenith Commercial Products for detailed specifications). An isolated audio output is at pins 4 and 5.

Theory of Simple Switch Mode

Mode pins 1, 3, and 6 are connected to pin 4 by way of momentary-action switches to activate indicated control function. These pins are 13 Vdc positive with respect to pin 14 when the switches are open. Loop current is 8 mA with the switches closed. Isolated audio output is at pins 4 and 5. Mode of operation is identical to previous Zenith models using the 5-Wire Interface with the exception of higher open circuit voltage (was 7 Vcd ) and higher loop current (was 2.5 mA).

SR21A 1-4 CH - MAIN

CONNECTIONS (continued)

Settings Min/Max Volume Levels

Use the following procedure to adjust minimum volume and maximum volume for pillow speaker. This procedure not only sets the maximum volume level that the pillow speaker can produce, but also prevents the TVs volume from accidentally being adjusted to level which is too low or too loud.

1. Connect pillow speaker. Place INT/EXT speaker switch on back of TV in EXT position.

2. Set VOLUME control on pillow speaker to maximum volume position.

3. Access Service Menu by following the instructions given in the “Service Menu” section of this book. Select the MAX

volume. Use the ADJUST key to set highest desired volume level within the range of 0 to 63. This will be the highest desired volume level, as heard at the pillow speaker.

4. elect the MIN volume. Use the ADJUST key to set the lowest desired volume level within the range of 0 to 63. This will

be the lowest desired volume level as heard at the pillow speaker.

5. Make no further adjustments and exit the Service Menu.

The TV is now adjusted for minimum and maximum volume settings. All further adjustments of the TVs volume should be made by using the VOLUME control on the pillow speaker.

SR21A 1-5 CH - MAIN

USER REMOTE - MBR3447Z

To use the TV functions defined below, make sure that the remote is set to operate TV. Press TV on the remote to select TV.

POWER

Turns TV On or Off.

FLASHBK ( Flashback)

Returns to previous Channel.

MODE

SURF

Turns Surf Channel On/Off

Selects the remote’s mode of operation

MUTE

Turns soun d O ff an d On whil e pi cture remains.

CHANNEL (Up/Do wn)

Selects ne xt ch annel in

TV’s memory. Press

and hold to r epe at .

NUMBER PAD

Selects ch annels directly.

Display s m enus for TV

and other opt ions.

LEFT/RIGHT ARROWS

Chooses and shows the

desired menu option.

A, B, C Ke ys

Special features of some TV’s

TIMER

Displays the Sleep Timer menu.

Press repeatedly to set desired

TV shut-off time.

VOLUME (Left/Right)

Increases TV ’s sound level.

ENTER

Shows Channel/Time, enters channe l , or r em oves any on-screen menus.

QUIT/ (Three Functions Key )

Exits from on-screen display, turns the sound enhancement feature on or off, and swi tches audio between Main source and PIP source.

UP and DOWN ARROWS

Moves hi ghlighted bar withi n menu to select an option.

Display s cl o sed caption menu .

TV/VCR SOURCE

Steps through source options.

MBR3447Z

124-00233

Note: Keys dedicated to VCR functions will still operate the VCR while the

remote is in TV mode.

SR21A 1-6 CH - REMOTES

PATIENT REMOTE - SC637Z

HEALTHVIEW SERIES

This remote control is intended for use by patients, guests and others. It provides access to basic TV and FM radio operations.

Press to turn TV ON or OFF

POWER

Press to access closed captions.

TV/FM

Press to alternate between

TV or FM operating mode

VOLUME

Press left to reduce or right to

increase volume level of TV.

NUMBERED BUTTONS

Press repeatedly to select

desired menu.

TIMER

Press to activate SLEEP TIMER.

CONCIERGE Series

MUTE

Press to turn off sound while picture remains. Press again to restore sound.

FLSHBK

Press to return to last TV channel you were watching.

CHANNEL Up/Down

Press to select a TV channel by going up/down through channels programmed in the TV memory.

ENTER

Press to view Channel/Time or to remove any on-screen display in

Display

menu or TV mode. Press to view the Music menu (active station) listing in FM mode.

CH PREV

Displays on-screen, preprogrammed directory of station and network affiliations when in TV mode.

SC637Z

124-00213-05

SR21A 1-7 CH - REMOTES

GUEST REMOTE - SC652Z

CONCIERGE SERIES

This remote control is intended for use by guests and others. It provides access only to basic TV operations.

Press to turn TV ON or OFF

POWER

Press to access closed captions.

VOLUME

Press left to reduce or right to

increase volume level of TV.

NUMBERED BUTTONS

Press repeatedly to select

desired menu.

TIMER

Press to activate SLEEP TIMER.

ALARM

CONCIERGE Series

MUTE

Press to turn off sound while picture remains. Press again to restore sound.

FLSHBK

Press to return to last TV channel you were watching.

CHANNEL Up/Down

Press to select a TV channel by going up/down through channels programmed in the TV memory.

ENTER

Press to view Channel/Time or to remove any on-screen display in

Display

menu or TV mode. Press to view the Music menu (active station) listing in FM mode.

ALARM

Press to turn wake-up alarm ON or OFF .

CH PREV

Displays on-screen, preprogrammed directory of station and network affiliations when in TV mode.

SC652Z

124-00213-02

SR21A 1-8 CH - REMOTES

GUEST REMOTE - SC692Z

CONCIERGE SERIES

This remote control is intended for use by guests and others. It provides access to basic TV and FM operations.

Press to turn TV ON or OFF

POWER

Press to access closed captions.

TV/FM

Press to alternate between

TV or FM operating mode

VOLUME

Press left to reduce or right to

increase volume level of TV.

NUMBERED BUTTONS

Press repeatedly to select

desired menu.

TIMER

Press to activate SLEEP TIMER.

ALARM

CONCIERGE Series

MUTE

Press to turn off sound while picture remains. Press again to restore sound.

FLSHBK

Press to return to last TV channel you were watching.

CHANNEL Up/Down

Press to select a TV channel by going up/down through channels programmed in the TV memory.

ENTER

Press to view Channel/Time or to remove any on-screen display in

Display

menu or TV mode. Press to view the Music menu (active station) listing in FM mode.

ALARM

Press to turn wake-up alarm ON or OFF .

CH PREV

Displays on-screen, preprogrammed directory of station and network affiliations when in TV mode.

SC692Z

124-00213-0

SR21A 1-9 CH - REMOTES

INSTALLER REMOTE - HP602Z

OPERATION

This remote control is available as an optional item for the equipment installer. It provides access to all onscreen menus and special features that cannot be accessed from the control panel on the TV.

POWER

Press to turn TV ON or OFF

Press to access closed captions.

TV/FM

Press to alternate between

TV or FM operating mode

VOLUME

Press left to reduce or right to

increase volume level of TV.

NUMBERED BUTTONS

Press repeatedly to s elect

desired menu.

TIMER

Press to activate SLEEP TIMER.

PURPOSE

This installer’s remote control is designed to aid installers in programming and setting up these TVs in lodging facilities.

MUTE

Press to turn off sound while picture remains. Press again

to restore sound.

FLSHBK

Press to ret u r n to la st TV channel you were watching.

CHANNEL Up/Down

Press to select a TV channel by going up/down thr ough channels programmed in the TV memory .

ENTER

Press to view Channel/Time or to remove any on-screen

display.

Display

SELECT

Press during on-screen menu

operatio ns to select an option.

ADJUST (Left)

Press during on-screen menu

operations to adjust an option.

ADJUST (Right)

Press during on-screen menu

operations to adjust an option.

HEALTHView Series

HP602Z

124-00213-06

ALARM

Press to turn wake-up alarm ON or OFF.

CH PREV

Displays on-screen, preprogrammed directory of station and network affiliations.

SR21A 1-10 CH - REMOTES

INSTALLER’S PROGRAMMER - LT1500

Connecting the programmer to a TV set automatically activates the programmer power-switching circuits.

MPI

Status

Indicator

Color

green red

Blink pattern

slow

battery OK battery low

Reset

Once connected, check the “Status Indicator” LED on the programmer. If the indicator is green and flashing a double-blink “heartbeat” pattern, proceed to next step.

Note: A slowly flashing green light indicates there is a problem with communications between TV and programmer. In this case, check for damaged cable, poor contacts, or other connection problems. If status indicator is red, the programmer batteries are low and should be replaced. Use 4 good-quality alkaline AA batteries.

If communications are good, the sign-on screen will be displayed on the TV screen as shown on the quick setup instructions that accompany the LT1500. If the intention is to set TV or programmer real-time clocks, and not the clone clock or TV clock time settings, then press a key to proceed to main clone menu.

If a previously stored TV setup is in a particular clone memory, it may be changed if desired by overwriting it with a new setup. There is no need for a separate memory clear operation.

Setups stored in programmer memory are nonvolatile and will be retained even after a battery change.

CLONE SELECTION MENU CHOICES

QUICKSET II PROGRAMMER

The QuickSet II programmer (LT1500) allows custom setup and programming information to be quickly copied from a master TV into multiple television sets. Once learned from the master, setup data is retained in the LT1500 for future use and recall.

When using the LT1500, operation will be easier if the TV is connected to a good-quality signal and operating with a stable picture displayed. To operate the LT1500, use indicated keys on an HP602 or LP702 installer’s remote or MBR3447 user’s remote, or the front panel keys on the TV receiver.

Begin programming process by setting up a master TV set using one of the installer’s remotes or the MBR remote. Set all features that will be customized including channel scan list, channel labels, and installer menu setups. Follow instructions in the operating guide for the specific model TV.

Next, connect the LT1500 to the master TV set using the cable provided with the programmer. Connect the cable between the MPI jacks on the TV and programmer.

LEARN FROM TV

Select “Learn From TV” then press ON/OFF, POWER, or ENTER to begin learning process.

Alternatively, use the TV front panel CHANNEL UP or CHANNEL DOWN keys to highlight choice.

Press ON/OFF, POWER, or ENTER to activate. The next screen will allow a choice of four available

memories to store this TV setup. With four memories available, four different TV setups can be stored in the LT1500.

Using the On-screen menu, choose a memory or choose to return to the main selection menu; then press ON/ OFF, POWER or ENTER to activate your selection.

The next screen allows one last opportunity to check the versions of TV and clone setups.

Press ON/OFF or POWER to activate learning cycle, or press any other key to return to the selection menu to make other choices.

Once a process has begun, the TV screen will display “LEARNING IN PROGRESS”. Please wait for the process to complete. When the TV screen displays “LEARNING COMPLETED”, press any key to end the learning process and return to the clone selection menu.

SR21A 1-11 CH - REMOTES

INSTALLER’S PROGRAMMER - LT1500 (continued)

TEACH TO TV

Select “TEACH TO TV”, and then press ON/OFF, POWER, or ENTER to begin teaching process.

Alternatively, use the TV front panel CHANNEL UP or CHANNEL DOWN keys to highlight the choice, and then press ON/OFF, POWER, or ENTER to activate.

The next screen displays a choice of the four available memories that can be copied to the TV.

Select the desired memory number, and then press ON/ OFF, POWER or ENTER to begin the teaching process. Alternatively, use the TV front panel CHANNEL UP or CHANNEL DOWN keys to highlight your choice.

Then press ON/OFF, POWER, or ENTER to begin. Using the on-screen menu, select a memory or return to

the main selection menu. Then press ON/OFF, POWER, or ENTER to activate the selection.

The next screen allows for one last opportunity to check the versions of TV and clone setups. Press ON/OFF or POWER to activate the teaching cycle, or any other key to return to the selection menu to make other choices.

Once a process has begun, the TV screen will display the “TEACHING IN PROGRESS” message.

Please wait for the process to complete. When the TV screen displays “TEACHING COMPLETED”, press any key to end the teaching process and return to the clone selection menu.

SET CLONE CLOCK FROM TV

To initially set the real-time clock in the LT1500 or update the time, select “SET CLONE FROM TV” and then press ON/OFF, POWER, or ENTER to copy current TV time to the clone clock.

Alternatively, use the TV front panel CHANNEL UP or CHANNEL DOWN keys to highlight the choice. Then press ON/OFF, POWER, or ENTER to activate.

This process will return the LT1500 to the sign-on screen to display the clone and TV clock settings. Press a key to go to the clone selection menu and perform other functions, or simply disconnect if time setting was the last task.

DISPLAY TV SETUP

Select “DISPLAY TV SETUP”, and then press ON/OFF, POWER, or ENTER to begin the teaching process.

Alternatively, use the TV front panel CHANNEL UP or CHANNEL DOWN keys to highlight your choice. Then press ON/OFF, POWER, or ENTER to activate.

The TV screen will display the items in the service menu setups. Use this function to quickly check a TV for correct setup. Press any key to clear display and return to clone selection menu.

DISPLAY CLONE SETUP

Select “DISPLAY CLONE SETUP”, and then press ON/OFF, POWER or ENTER to begin the teaching process. Alternatively, use the TV front panel CHANNEL UP or CHANNEL DOWN keys to highlight the choice, and then press ON/OFF, POWER or ENTER to activate.

The TV screen will display the memory selection menu. Select the desired memory number, and then press ON/

OFF, POWER, or ENTER to display contents of selected memory. Alternatively, use the TV front panel CHANNEL UP or CHANNEL DOWN keys to highlight the choice, then press ON/OFF, POWER or ENTER to begin.

The TV screen will display items in the installer menu setups. Use this function to quickly check contents of a particular clone memory for correct setup.

Press any key to clear the display and return to the clone selection menu.

OPERATION NOTES

Disconnect the LT1500 from the TV set when the desired task has been completed. Disconnecting the clone automatically switches it off. The real time clock continues to run when the main circuits are switched off.

After replacing exhausted batteries, or if the programmer behaves strangely after a static shock, use a paper clip or similar instrument inserted through the small hole marked “RESET” to activate the internal reset switch and restore normal operation. After reset, check the realtime clock setting. It may be necessary to reset the clock from a TV programmed to the correct time.

Note: The LT1500 programmer is designed to be used

with TV sets containing the 221-1390 and later microprocessors. Use with earlier TV sets may give unpredictable results.

The specific microprocessor used in any TV set may be determined by activating the service menu. The microprocessor part number appears at the top of the screen when the service menu is activated. Processors before the 221-01390 have a limited screen display capability. They cannot display entire screens as shown in the quick setup instructions accompanying the LT1500 programmer. Use the printed menu illustrations on the quick setup sheet as an aid to making programming choices.

SR21A 1-12 CH - REMOTES

USER MENUS 221-01390

INSTALLATION SETUP Installer’s Remote and Clone Programmer

To perform the installation setup for several TVs, you need an installer’s remote, such as the HP602Z (See 1-

10), and the LT1500 Clone Programmer (See 1-11). The HP602Z Installer’s Remote allows access to the Installer’s Menu, User Menus, and Source/Channel Banks. The LT1500 Clone Programmer is used to duplicate a TV’s setup and install it on one or more additional TVs.

Press the POWER key on the Installer remote control to turn on the TV.

SETUP MENU

Press the MENU key on the Installer’s remote repeatedly so that the SETUP MENU appears on the screen.

SETUP MENU

AUTO PROGRAM TO PROGRAM

ADD/DEL/BL NK CH. LABEL TIMER SETUP CLOCK SET CAPTIONS/TEX T

LANGUAGE

Note: On some models, there are three jacks on the front

of the TV that make connecting Audio/Video devices like Camcorders easy. To use the front jacks as the signal source, simply plug a composite video cable into the VIDEO jack. The TV will automatically change its source setting to CAMPORT, as indicated on the channel selection screen.

Press a

IGHT

or L

EFT

ADJ

arrow to begin the Channel Search. The receiver searches for available channels and stores them in memory for user access. Press the

key on the remote until the SETUP MENU reappears.

ENTER

when finished. Press

ADD/DEL/BLNK

Press SELECT repeatedly to highlight the ADD/DEL/BLNK option. Use the remote to select a channel. ADD/DELETE allows tailoring of the channel scan to eliminate unwanted channels and add desired channels that were not stored during Auto Programming.

Use the number keypad and Using the

IGHT/LEFT

ADJ

ENTER

to add a deleted

channel.

arrows, pick whether a channel is Added, Deleted, or Blank. Blank is used by hospitals and institutions to send music or informational messages to an unused channel. When BLNK is selected, screen will be black while audio continues.

Select any other channels to be changed, and when finished, press ENTER to close the menu.

CH LABELS (Channel Labels)

Press the MENU key on the remote so that the SETUP MENU reappears.

Use SELECT to choose the CH LABELS option.

AUTO PROGRAM

Using SELECT on the remote control, highlight AUTO PROGRAM on the screen. Then press a RIGHT/LEFT ADJ (Adjust) arrow button to reach the AUTO PROGRAM screen.

Using

SELECT

, choose either CABLE TV or OFF-AIR ANTENNA

Pressing either the RIGHT/LEFT ADJ arrow repeatedly, pick the label you want from the list of available selections shown in the chart. Select other channels, and when you are finished, press ENTER to remove the menu.

Note: Although the next item on the Setup Menu is

on your screen. (The flashing option is selected.)

CHANNEL LABELS

A&E CMTV ESPN HSE NOS TBN VC ABC CNBC ESPN2 HSN PBS TELE VCR ACTS CNN ET IC PLAY TLC VH-1 ADC COM EWTN INSP PTL TMC VISN AMC CSPN FAM JCN QVC TNN VJN BCC CSP2 FNN LIFE RDS TNT WB BET CTN FOX MAX REQ TRAV WGN BRAV CTV F&V ME/U SC TSN WTBS CA DIS FX MMT SCFI TVA WWOR CBC DISC GALA MTV SHOW TWC YTV CBN E! HBO NBC SIN UPN - - - CBS ENC HN NICK TBS USA None

Note: Selecting the none option means the channel will not have a label.

Selecting this label option means the channel will not be displayed on the channel/time/audio signal display.

Timer Setup, the clock must be set first.

SR21A 1-13 CH - MENUS

USER MENUS 221-01390 (continued)

TIMER SETUP

Press MENU to show the SETUP MENU. Use SELECT to highlight TIMER SETUP.

With TIMER SETUP highlighted, use the RIGHT/LEFT ADJ arrow to pick from the preset times, the time that the TV will turn itself off, or set the SLEEP TIMER to Off to disable it.

Press ENTER to set the timer and return to TV viewing.

OFF

Notes:

• Availability and functionality of the CAPTION/TEXT

features are determined only by each broadcaster and may not be available in your area.

• CAPTIONS - The term for the words that scroll across

the bottom of the TV screen; usually the audio portion of a program, provided for the hearing impaired.

• TEXT - The term for the words that appear in a large

black frame that almost covers the entire screen; usually messages provided by the broadcaster.

Press the MENU key on the remote control to return to the Setup menu.

LANGUAGE

Press SELECT on the remote control and repeat to highlight LANGUAGE on your screen.

Press a RIGHT/LEFT ADJ arrow to choose one of the following options: English, Spanish or French.

Press ENTER to return to TV viewing.

AUDIO MENU

Press MENU repeatedly on the remote control until the AUDIO MENU appears.

The Sleep Timer may be instantly set by pressing the

TIMER key repeatedly. When you have made your

selection, press ENTER to set the Sleep Timer and return to TV viewing.

CLOCK SET

Press MENU repeatedly to show the Setup menu. Use

SELECT to highlight Clock Set.

Set the current time; use the Number keypad to enter the hours, then minutes. For example, enter 06, then 30, to set 6:30 on the clock. Use the TIMER key to specify AM or PM.

Press ENTER to start the clock and return to TV viewing.

CAPTION/TEXT

Using SELECT on the remote control, select CAPTION/ TEXT on the screen.

Use the RIGHT/LEFT ADJ arrows to choose any of the following options: CAPTION 1, CAPTION 2, CAPTION 3, CAPTION 4, TEXT 1, TEXT 2, TEXT 3, or TEXT 4.

Press ENTER to close the menu. Select CAPTIONS directly by pressing CC repeatedly to

choose OFF, CAPTION 1, 2, 3, 4 or TEXT 1, 2, 3, 4. CAPTION/TEXT is a feature that allows the TV to receive

closed captions and/or text options when made available by the broadcaster.

AUDIO MENU

BASS

TREBLE BALANCE AUDIO MODE STEREO FRONT SURR OFF SOUNDRITE OFF

Using SELECT on the remote control, highlight the setting you want to change. Choose from:

• BASS: Adjusts the amount of Bass (low frequency

level) in the sound. Has 15 steps (0 to 14)

• TREBLE: Adjusts the amount of Treble (High

frequency Level) in the sound. Has 15 steps (0 to

14)

• BALANCE: Adjusts the balance of sound between the

left and right speakers. Has 15 steps (0 to 14).

• AUDIO MODE: Selects between stereo, Mono, Stereo

or 2nd Audio/SAP. If 2nd Audio/SAP is selected, but current channels does not support SAP, then either Stereo or Mono will be heard.

SR21A 1-14 CH - MENUS

USER MENUS 221-01390 (continued)

• FRONT SURR: can be set ‘On’ or ‘Off’, regardless of

the current Audio Mode setting. However, the Front Surround effect can only be heard when the Audio Mode has been set to ‘Stereo’ and a Stereo signal is present.

• SOUNDRITE: Used to obtain a uniform volume level,

particularly while changing channels. The SoundRite feature can be best demonstrated on a channel with no signal (snow).

Note: The Hospital chassis does not have the above listed

Audio Menu. Instead, it only has the option to turn the speakers On or Off.

Press a RIGHT/LEFT ADJ arrow to adjust or change the option you have selected.

Press ENTER to return to TV viewing, or press SELECT to return to the Audio Menu to adjust another option.

VIDEO MENU

Press MENU repeatedly until the Video Menu appears.

VIDEO MENU

CONTRAST

BRIGHTNESS COLOR TINT SHARPNESS

PICTURE PREF PRESET

Your options are:

• CONTRAST: Adjusts the contrast of the picture

(difference between white and black). Has 64 steps (0 to 63).

• BRIGHTNESS: Adjusts the brightness of the picture

(amount of white). Has 64 steps (0 to 63).

• COLOR: Adjusts the intensity of the color. Has 64

steps (0 to 63).

• TINT: Adjusts the tint of the color picture (balances

between amounts of red and green in the TV picture). Has 64 steps (0 to 63).

• PICTURE PREF: Has two settings; PRESET and CUSTOM.

In the Custom mode the brightness, contrast, color and tint can be set to a users particular liking. The preset settings brings up the factory setting for these controls. Preset is selected automatically after an AC power interrupt.

Use SELECT on the remote control to highlight the setting you want to change.

Press a RIGHT/LEFT ADJ arrow to adjust or change the option you have selected.

Press ENTER to return to TV viewing, or press SELECT to return to the Video Menu.

PARENTAL CONTROL

This optional feature can be used to prevent (block) unwanted programming from appearing on your TV.

PARENTAL CONTROL

AUX SOURCES MPAA RATING AGE BLOCK

CONTENT BLOCK

SET HOURS SET PASSWORD LOCK ON/OFF

SEX SCENES

PARENTAL CONTROL offers the user a wide variety of options and settings that restrict or block programming that can appear on the TV. PARENTAL CONTROL allows users the capability of defining which program ratings they consider acceptable to younger or more sensitive viewers.

PARENTAL CONTROL can be preset and turned on or off by a user who specifies the 4 number password. The number of hours blocked may also be specified.

General audience and children viewer blocks can both be programmed into the TV’s memory. Viewer ratings are specified for both the TV industry and the motion picture industry; both rating systems can be used. The ratings are based mainly on children’s ages.

• SHARPNESS: Raises or lowers the definition of the TV

picture. The lower the level, the softer the images will appear (adjusts the sharpness of the picture). Has 64 steps (0 to 63).

SR21A 1-15 CH - MENUS

USER MENUS 221-01390 (continued)

OVERVIEW

To ensure complete coverage for all TV programs (movies and regular TV shows), choose ratings from the Motion Picture Association of America (MPAA) Rating System chart and the TV Parental Guidelines Rating System chart (both shown below). Use the AGE BLOCK option for General Audiences and for Children. You can also add additional restrictions from the CONTENT BLOCK menu.

Things to Consider before Setting Up Parental Control:

Determine which ratings you consider acceptable for viewing. (For example, if you choose TV-PG, all of the more restrictive ratings will be blocked automatically: able to see TV-PG, TV-14, or

TV-MA rated programming.)

the viewer will not be

Select whether auxiliary video sources will be blocked in the AUX SOURCES block option. (Blocks signals from VCRs, DVD players, etc. connected to the TV Audio/Video input jacks). You could also leave AUX SOURCES unblocked, and then choose allowable ratings.

In the CONTENT BLK option, you can block program Content based on individual parameters such as Strong

MOTION PICTURE ASSOCIATION OF AMERICA (MPAA) RATING SYSTEM

Dialog, Bad Language, Sex Scenes, Violence Scenes, or Fantasy Violence Scenes.

You can set PARENTAL CONTROL to be active in the SET HOURS option for up to 12 hours.

Use the number keys on the remote to select a secret password in the SET PASSWORD option. Don’t forget the password, as it is the only way you can access the PARENTAL CONTROL menu and change rating selections or turn PARENTAL CONTROL off. If you do not want PARENTAL CONTROL to be active all the time, you can turn it on or off with the LOCK ON/OFF option.

Notes:

• You can set different PARENTAL CONTROL viewing re-

strictions for general audiences and for children - - both can be active at the same time.

• Simply specifying one content block such as Sex Scenes,

will not automatically block another type of content in the programs from appearing.

• Even if you choose to leave the AUX INPUTS unblocked,

the ratings you specify will automatically restrict the programming that appears from the video sources.

G General Audiences Content not offensive to most viewers. PG Parental Guidance Content is such that parents may not want their children to view the program.

Suggested

PG-13 Parental Guidance Program is inappropriate for preteens, with a greater degree of offensive

Suggested material than a PG-rated program.

R Restricted viewing Not for children under age 17. Strong elements of sex and/or violence. NC-17 Restricted Viewing Not for children under age 17 under any circumstances. Strong sexual content. X Hard Core Films Same as NC-17 rating.

Note: Zenith Electronics Corporation is not liable for any program content that appears when using this rating system;

as always, user discretion is advised.

TV PARENTAL GUIDELINE RATING SYSTEM

G General Audiences Content not offensive to most viewers.

TV-G General Audience Considered suitable for all audiences; children may watch unattended.

TV-PG Parental Guidance Unsuitable for younger children, may contain: Suggestive Dialog, Bad Language,

Suggested Sex, and Violence Scenes.

TV-14 Parents Strongly Unsuitable for children under 14, may contain: Strong Dialog, Bad Language,

Cautioned Sex, and Violence Scenes.

TV-MA Mature Audience Only Adults only, may contain: Strong Dialog, Bad Language, Sex, and Violence Scenes.

CHILDRENS’ CLASSIFICATIONS

TV-Y Children Considered suitable for all children under 7 years old. TV-Y7 Children 7 and over Considered suitable for children over 7, may contain Fantasy Violence Scenes.

SR21A 1-16 CH - MENUS

USER MENUS 221-01390 (continued)

• You cannot disable PARENTAL CONTROL by disconnecting

the TV from power. Block hours will automatically reset to the original block time setting specified if power is disconnected.

• To reset the password, use the installer’s remote control

to deactivate the V-Chip in the Installer’s menu (#53). Exit out of the Installer’s Menu after deactivating the Parental Control. Then enter back in and reactivate the V-Chip.

With the PARENTAL CONTROL menu on-screen, use SELECT to choose an option, such as CONTENT BLOCK. Use the

LEFT/RIGHT ADJ arrows to show the CONTENT BLOCK menu,

to adjust or set the rating for an option.

CHANNEL PREVIEW

NBC

NONE

PBS

4 5

NONE CBS

6 7

ABC NONE

NONE

10 CH / TO SELECT, ENTER TO QUIT

CC FOR PARENTAL CONTROL

To block sex scenes, for example, use the “TV-PG and above” setting. To block dialog, use LEFT/RIGHT ADJ arrows to select among UNBLOCKED, TV-PG and above, or TV-14.

(See the Ratings Charts for rating meanings.) After you have selected and adjusted the PARENTAL

CONTROL menu options to your preferences:

- Set the number of hours Parental Control will be on.

- Set a 4 number password.

- Set the Lock On/Off option to either on or off.

Note: Some broadcasts do not include ratings information.

Channel/Time/Audio Display

Press ENTER. Shows currently selected channel or source, current time if the clock has been set, and incoming audio signal.

ALARM MENU

Press ALARM. Sets the time the wake up alarm will sound.

CH PREVIEW MENU

Press CH PREVIEW. Displays list of the available TV Channels, Guest Parental Control menu (if active) and Video Channel access.

CAPTIONS DISPLAY

Press CC. Sets Caption/Text options: Off, Caption 1, 2, 3, 4 or Text 1, 2.

CAPTIONS

OFF

RADIO FEATURE

Pressing the TV/FM key allows the customer to listen the Radio.

The Auto Program feature automatically searches for all available Radio Stations and marks them as ‘added’ so that they may be accessed via the channel Up/Down key.

Press CHANNEL UP/DOWN to select a channel, or menu, then ENTER to go to channel or menu.

Pressing CC will activate the Parental Control menu.

SR21A 1-17 CH - MENUS

USER MENUS 221-01390 (continued)

In the Auto Program screen:

• A message at the top displays “Auto Program” to let

the customer know that they have entered the Auto Program feature.

• Up/Down and Left/Right Arrow keys are used for Auto

Program selections.

• The current RF input type (Off Air Antenna or Cable

TV) is highlighted. Use the Up/Down Arrow keys to change the RF input type.

To start the Auto Program, press the Left/Right Arrow key.

SETUP MENU

AUTO PROGRAM

FM ADD/DEL FM LABEL

TIMER SETUP CLOCK SET

TO PROGRAM

FM LABELS

Use FM Label to assign a label for the type of radio station shown in the Music ID display. For example, if the label ROCK is assigned to FM station 100.9, then ROCK will appear in the active stations list next to FM

100.9, whenever the Music ID display is shown. Labels available (besides Blank) include:

CLAS = Classical OTHE = Other COUN = Country RELI = Religon JAZZ = Jazz ROCK = Rock NEWS = News SPOR = Sports OLDI = Oldies TALK = Talk

MUSIC ID

101.9 RELIGOUS

101.7 COUNTRY

101.3 CLASSICAL

101.1 NEWS

100.9 ROCK

100.7 OLDIES

100.5 JAZZ

100.3 TALK

99.9 SPORTS

Note: While searching for radio stations, all keys except

the Power key are disabled. This prevents an incomplete Auto Program procedure. Running the Auto Program will clear the factory mode, if it was active. This happens at the end of the Auto Program. If no radio stations are found, then the following message will appear: “Make sure that the antenna

is connected, and try again”.

FM ADD/DEL

Allows tailoring of the station scan results to eliminate weak and unwanted stations. Use FM ADD/DELETE to get rid of unwanted stations or to program back in a previously deleted station.

Note: After using the FM Add/Del function, return to TV

mode (press TV/FM key) before turning the TV off. This ensures that the FM Add/Del changes are saved in memory.

CH / TO SELECT ENTER TO QUIT

TIMER SETUP

Turns on the FM Radio’s Sleep Timer menu. Select TIMER SETUP, then press RIGHT/LEFT ADJ to choose the time the FM radio is to remain on before it turns off. Choose from 15 minutes to 4 hours. Once the turn off time has been selected, press ENTER to activate the timer and close the menu.

CLOCK SET

Sets the clock in the receiver.

Note: If clock had been set in the TV menu mode,

there is no need to set it in the radio mode.

SR21A 1-18 CH - MENUS

USER MENUS 221-01390 (continued)

AUDIO MENU FOR RADIO

Use to adjust the sound options to your preferences. The display shows either Mono, Stereo or Muted.

Mono sets will only show the option to turn the speakers On or Off.

RADIO SCREEN SAVER

When the customer is done with setup, the radio screen saver turns on. The radio screen saver displays the Radio station, the audio mode, and the time as seen below.

104.1 MONO 10:56 PM

PLANNING THE CHANNEL BANKS Generally, TV channels are grouped into “program

packages” with terms that are proposed to the end user. The user then opts for a package. Below is an example of how TV channels may be grouped.

Channel Bank Program package

1 Basic cable channels 2 Extended cable channels 3 Extended with premium channels 4 Other cable service options

Sometimes only one or two channel banks may be needed. You may leave any unused bank with the channels. However, you may want to leave at least one channel in any unused bank. Then, if someone selects an unused bank, that channel will assure them that the TV is functional.

Note: Some channels left over from factory testing

may still be in the channel banks if you have not yet run Auto Program.

ADDING/DELETING CHANNELS A previously prepared programming chart is helpful.

This display is also scrolling down. Once the display reaches the bottom, it starts back at the top and keeps scrolling down. This scrolling occurs until the Menu key or the down arrow is pressed.

CHANNEL BANK

Allows to choose between one of 4 channel banks. Press SOURCE to change between banks.

BANK 1

1. Run AUTO PROGRAM (in the SETUP MENU). The channels available at your cable/antenna will be entered in all channel banks (1, 2, 3 and 4).

Notes:

• Channels previously blanked will be cleared; channels

entered that are not currently available will be deleted.

• The Blank Channel feature is global. A channel will be

blanked in all channel banks.

2. Select a channel bank with a remote press SOURCE/ BANK (and repeat). The Channel BANK and BANK number will be displayed.

3. Use the ADD/DEL/BLNK option (also in the SETUP MENU) to customize your program package. You may delete channels or add some that have not been entered. You can also Blank a channel to accommodate an audio-only program source or for in-house communication. The ADD/DEL/BLNK option has more details.

4. Repeat steps 2 and 3 to program another channel bank.

It is best to do ADD/DEL customizing before doing BLANKING. ADD and DEL (not BLNK) can be used independently for channel banks 1, 2, 3, and 4).

SR21A 1-19 CH - MENUS

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