Related Manuals for Zenith JR596W
Summarization of Contents
SERVICE GUIDELINES AND TECHNICAL INDEX
PRODUCT SAFETY SERVICING GUIDELINES
Guidelines for safe servicing of audio products.
SAFETY CHECKS
Essential safety checks for fire and shock hazards.
TECHNICAL APPLICATIONS INDEX
Index of technical applications covered in service manuals.
PRODUCT FEATURES AND NOTES
NOTES ON PRODUCT FEATURES
Explanations for product feature codes (A-E, A1-A3, etc.).
RECORD CHANGER FEATURES
NOTES ON RECORD CHANGERS
Details regarding record changer specifications and usage.
TAPE UNIT FEATURES
NOTES ON TAPE UNITS
Explanations for tape unit feature codes (Note A-E).
GENERAL INFORMATION AND TECHNICAL DATA
GENERAL INFORMATION
Explains theory, component identification, and power amplifiers.
FM TECHNICAL DATA
FM AGC voltage curve and power output specifications.
ALIGNMENT PROCEDURES AND TROUBLESHOOTING
FM/AM/MULTIPLEX ALIGNMENT
Procedures for aligning FM, AM, and Multiplex circuitry.
GENERAL TROUBLE-SHOOTING PROCEDURE
Method to determine if issues are in RF, IF, or Multiplex.
RF, IF AND MPX ALIGNMENT PROCEDURE
PREFERRED METHOD
Step-by-step procedure using AM Sweep Generator.
ALTERNATE METHOD
Procedure for AM IF alignment when sweep generator is unavailable.
RF, IF AND MPX ALIGNMENT PROCEDURE
FM DETECTOR AND IF ALIGNMENT NOTES
Notes for FM detector and IF alignment.
CERAMIC FILTERS TABLE
Table listing ceramic filter part numbers and frequencies.
RF, IF AND MPX ALIGNMENT PROCEDURE
AM AND FM ALIGNMENT NOTES
Notes for AM and FM alignment.
MULTIPLEX ALIGNMENT PROCEDURE
Procedure for aligning multiplex circuits.
RF, IF, AND MPX ALIGNMENT PROCEDURE
ALIGNMENT NOTES FOR 15WJR29
Notes for AM, FM IF, and FM Detector alignment.
RF, IF, AND MPX ALIGNMENT PROCEDURE
ALIGNMENT SIGNAL LEVEL AND CONTROL NOTES
Notes on signal level and control adjustments during alignment.
SECTION FOUR THEORY AND APPLICATIONS
INTRODUCTION TO "J LINE" CHASSIS
Overview of "J Line" chassis and design concepts.
CHASSIS 3WJR52 FEATURES
Details on Chassis 3WJR52 features and concepts.
"J LINE" STEREO CHASSIS COMPARISON
CHASSIS 3WJR52 FEATURES LIST
Lists features specific to Chassis 3WJR52.
RF/IF/MPX CIRCUITRY
AM RF/OSCILLATOR/MIXER/IF IC
Details on the single IC handling AM RF, Oscillator, Mixer, IF.
PLL MULTIPLEX DETECTOR IC301
Explanation of the PLL Multiplex Detector IC301.
FM IF AND AGC
CERAMIC FILTERS
Table listing ceramic filter part numbers and frequencies.
FM-IF INTEGRATED CIRCUIT
Explanation of the FM IF Integrated Circuit.
FM CIRCUITRY DETAILS
FM QUADRATURE DETECTOR
Key FM circuit block explanation.
AM/FM TUNING METER
Operation of the tuning meter circuit.
FM-MULTIPLEX SYSTEM
Explanation of the FM Multiplex system.
PHASE LOCKED LOOP CONCEPT AND MULTIPLEX DECODER
MULTIPLEX DECODER BLOCK DIAGRAM
Block diagram of the PLL multiplex decoder (IC301).
CHASSIS 3WJR52 FM MULTIPLEX SCHEMATIC
IC301 FUNCTIONS
Functions of IC301 for subcarrier regeneration, stereo switch, decoding.
MULTIPLEX DECODER WAVEFORMS AND OPERATION
MULTIPLEX DECODER WAVEFORMS
Waveforms for IC301 multiplex decoder.
Stereo/Mono Switching and Regulator
Operation of switching and IC301 regulator.
Stereo Indicator Lamp Circuit
Explanation of the stereo indicator lamp circuit.
IC-301 VOLTAGES AND PLL CONCEPT
I.C.-301 VOLTAGES
Voltage values for IC301 in different modes.
PHASE LOCKED LOOP (PLL) CONCEPT
Explanation of the PLL concept in relation to the circuit.
DEMODULATOR OUTPUT AND SPEAKER POP REDUCTION
Demodulator Output
Explanation of demodulator output and signal combination.
Speaker Pop Reduction Circuitry
Circuitry to reduce pops during FM/FM Stereo switching.
CHASSIS 3WJR52 AUDIO CIRCUITRY
AUDIO PREAMP CIRCUITRY
Schematic and function of the audio preamp circuit.
OUTPUT STAGE CHARACTERISTICS
Non-linear diode characteristics and output stage operation.
CHASSIS 1WJR55 AUDIO CIRCUITRY
1WJR55 AUDIO CIRCUITRY
New audio circuitry in 1WJR55 using ICs for improved performance.
CHASSIS 1WJR55 AUDIO SCHEMATIC AND SERVICING PRECAUTIONS
SERVICING PRECAUTIONS FOR 1WJR55
Precautions when troubleshooting or servicing this chassis.
IC OUTPUT STAGE LOAD REQUIREMENT
Requirement to use a 16 ohm load for the IC output stage.
POLARIZED AC PLUGS AND POWER SUPPLY
POLARIZED AC PLUGS
Explanation of polarized AC plugs and their purpose.
CHASSIS 3WJR50 POWER SUPPLY
Power supply schematic using polarized AC plugs.
MAGNETIC PHONO CARTRIDGE PREAMP
CHASSIS 8WJR56, 8WJR57 AND 15WJR29 INTRODUCTION
Introduction to these chassis and their preamp.
PREAMP CIRCUITRY DESCRIPTION
Explanation of the preamp circuit based on Figure 21 schematic.
MAGNETIC PHONO CARTRIDGES
CARTRIDGE TYPES
Explanation of moving armature, moving coil, and moving magnet principles.
STYLUS ASSEMBLY
Description of the magnetic cartridge stylus assembly.
CHASSIS 8WJR57 PREAMP CIRCUIT AND DISASSEMBLY
COIL ASSEMBLY
Description of the coil and pole piece assembly for cartridges.
OUT FRONT CHASSIS REMOVAL GROUP "B"
Disassembly procedure for Group "B" models.
CHASSIS 8WJR57 AUDIO OUTPUT CIRCUIT AND CONTROLS
CHASSIS 8WJR56 AND 8WJR57 AUDIO CIRCUITRY
Details on audio circuitry, power output, and controls for 8WJR56/57.
AUDIO OUTPUT CIRCUIT OPERATION
Explanation of the audio output circuit's operation and controls.
DISASSEMBLY PROCEDURE MODELS J587W, JR587W AND JR588W
DIAL AND STEREO LAMP REMOVAL
Procedure for removing dial and stereo indicator lamps.
RECORD CHANGER REMOVAL
Procedure for removing the record changer.
CABINET TOP REMOVAL AND ESCUTCHEON REMOVAL
CABINET TOP REMOVAL
Procedure for removing the cabinet top.
ESCUTCHEON REMOVAL
Procedure for removing the escutcheon.
WIRE-WRAP CONNECTIONS
Explanation of wire-wrap interconnection methods.
DISASSEMBLY PROCEDURE MODELS J596W AND JR596W
TAPE UNIT REMOVAL
Procedure for removing the tape unit.
AUDIO CHASSIS REMOVAL
Procedure for removing the audio chassis.
TUNER CHASSIS REMOVAL
Procedure for removing the tuner chassis.
CABINET BOTTOM REMOVAL
Procedure for removing the bottom cabinet cover.
ADDITIONAL DISASSEMBLY PROCEDURES AND CHASSIS 15WJR29 ACCESSIBILITY
ADDITIONAL DISASSEMBLY PROCEDURES
Further disassembly details for other models.
CHASSIS 15WJR29 ACCESSIBILITY
Accessibility for servicing and alignment of Chassis 15WJR29.
ESCUTCHEON REMOVAL AND CHASSIS REMOVAL GROUPS
MODELS J596W AND JR596W ESCUTCHEON REMOVAL
Specific escutcheon removal for J596W/JR596W.
TUNER CHASSIS REMOVAL ESCUTCHEON
Escutcheon removal for tuner chassis.
CHASSIS REMOVAL GROUPS C
ESCUTCHEON REMOVAL - GROUP "C"
Disassembly procedure for Group "C" escutcheon.
OUT FRONT CHASSIS REMOVAL GROUP "C"
Disassembly procedure for Group "C" chassis.
OUT FRONT CHASSIS REMOVAL GROUP "C"
SLIDING RADIO CHASSIS OUT
Step to slide radio chassis (with tape unit) out from the front.
SPEAKER WIRING SCHEMATICS
SPEAKER WIRING MODELS J900, J901, J902, J903 JR901
Speaker wiring for models J900, J901, J902, J903, JR901.
SPEAKER WIRING MODEL JR966
Speaker wiring for model JR966.
SPEAKER WIRING SCHEMATICS
SPEAKER WIRING MODELS J915, J916 JR920, JR922 JR917, JR919
Speaker wiring for models J915, J916, JR920, JR922, JR917, JR919.
SPEAKER WIRING MODELS SJ2597, SJ2599
Speaker wiring for models SJ2597, SJ2599.
SPEAKER WIRING SCHEMATICS
SPEAKER WIRING MODEL JR966
Speaker wiring for model JR966.
SPEAKER WIRING SCHEMATICS
SPEAKER WIRING MODELS J1000W1, J1000W2, J2000W1, J2000W2, J3000W1
Speaker wiring for models J1000W1, J1000W2, J2000W1, J2000W2, J3000W1.
CHASSIS 1WJR55 - CHASSIS LAYOUT AND COMPONENT DATA
TRANSISTORS AND TEST POINTS
List of transistors and key test points for the chassis.
DIAL CORD DRIVE
Instructions for dial cord drive stringing.
IC301 WAVEFORMS
Waveforms for IC301 multiplex decoder.
CHASSIS 1WJR55 - WIRING DIAGRAMS AND IC VOLTAGES
IC VOLTAGES
Voltage values for ICs in different modes.
CHASSIS 3WJR50, 50Z - SCHEMATIC AND TEST POINTS
CHASSIS 3WJR50, 50Z - SCHEMATIC
Schematic for Chassis 3WJR50, 50Z.
TEST POINTS
Key test points for troubleshooting and alignment.
IMPORTANT SAFETY NOTICE
TRANSISTOR VOLTAGES
Voltage values for transistors.
CHASSIS 3WJR50, 50Z - WIRING DIAGRAMS AND LAYOUT
TRANSISTOR MOUNTING VIEW
Views showing transistor mounting and pinouts.
CHASSIS 3WJR50, 50Z - CHASSIS LAYOUT
Layout of components on the chassis.
CHASSIS 3WJR51 - CHASSIS LAYOUT AND COMPONENT DATA
TRANSISTORS AND TEST POINTS
List of transistors and key test points for the chassis.
DIAL CORD DRIVE
Instructions for dial cord drive stringing.
TRANSISTOR MOUNTING VIEW
Views showing transistor mounting and pinouts.
CHASSIS 3WJR51 - CHASSIS LAYOUT AND COMPONENT DATA
TRANSISTORS AND TEST POINTS
List of transistors and key test points for the chassis.
DIAL CORD DRIVE
Instructions for dial cord drive stringing.
TRANSISTOR MOUNTING VIEW
Views showing transistor mounting and pinouts.
CHASSIS 3WJR52, 52Z - SCHEMATIC AND TEST POINTS
CHASSIS 3WJR52, 52Z - SCHEMATIC
Schematic for Chassis 3WJR52, 52Z.
TEST POINTS
Key test points for troubleshooting and alignment.
CHASSIS 3WJR51 - CHASSIS LAYOUT AND COMPONENT DATA
TRANSISTORS AND TEST POINTS
List of transistors and key test points for the chassis.
DIAL CORD DRIVE
Instructions for dial cord drive stringing.
TRANSISTOR MOUNTING VIEW
Views showing transistor mounting and pinouts.
IMPORTANT SAFETY NOTICE AND TRANSISTOR VOLTAGES
IMPORTANT SAFETY NOTICE
Critical safety warnings and precautions for servicing.
TRANSISTOR VOLTAGES
Voltage values for transistors.
CHASSIS 15WJR29 - CHASSIS LAYOUT AND COMPONENT DATA
TRANSISTORS AND TEST POINTS
List of transistors and key test points for the chassis.
DIAL CORD DRIVE
Instructions for dial cord drive stringing.
TRANSISTOR MOUNTING VIEW
Views showing transistor mounting and pinouts.
CHASSIS 8WJR57 - WIRING AND COMPONENTS
MAGNETIC PREAMP CIRCUIT BOARD
Wiring and components of the magnetic preamp circuit board.
CHASSIS 8WJR57 - CHASSIS LAYOUT AND COMPONENT DATA
TRANSISTORS AND TEST POINTS
List of transistors and key test points for the chassis.
DIAL CORD DRIVE
Instructions for dial cord drive stringing.
TRANSISTOR MOUNTING VIEW
Views showing transistor mounting and pinouts.
RF TUNER & PRE-AMPLIFIER AND AUDIO AMPLIFIER & POWER SUPPLY
RF TUNER & PRE-AMPLIFIER
Key circuit block explanation for RF tuner and preamp.
AUDIO AMPLIFIER & POWER SUPPLY
Key circuit block explanation for audio amp and power supply.
CHASSIS 15WJR29 - SCHEMATIC AND SAFETY NOTICE
CHASSIS 15WJR29 - SCHEMATIC
Schematic for Chassis 15WJR29.
IMPORTANT SAFETY NOTICE
Critical safety warnings and precautions for servicing.
CHASSIS 15WJR29 - WIRING DIAGRAMS
POWER AMPLIFIER WIRING
Wiring diagram for the power amplifier.
POWER SUPPLY WIRING
Wiring diagram for the power supply.
CHASSIS 15WJR29 - SCHEMATIC AND IC VOLTAGES
CHASSIS 15WJR29 - SCHEMATIC
Schematic for Chassis 15WJR29.
IC-301 VOLTAGES
Voltage values for IC301 in different modes.
CHASSIS 15WJR29 - PREAMPLIFIER WIRING
MAGNETIC PREAMP CIRCUIT BOARD
Wiring and components of the magnetic preamp circuit board.
CHASSIS 8WJR56, 8WJR57 AND 15WJR29 - MAGNETIC PHONO PREAMP WIRING
Q751, Q701, Q752, Q702
Transistors used in the magnetic phono preamp.
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