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SERVICE MANUAL
VIDEO CASSETTE RECORDER
HR-J271MS/J471MS/J677MS/J777MS
SPECIFICATIONS
GENERAL
Power requirement
Rating
Operating
Power consumption
Temperature
Operating
Storage
Operating position
Dimensions (WxHxD)
Weight
Format
Maximum recording time
(SP)
(LP)
(EP)
VIDEO/AUDIO
Signal system
Recording system
Signal-to-noise ratio
Horizontal resolution
Frequency range
Input/Output
CABLE/
DVD/SAT
VCR
TV
TV/VCR
AUDIO
1
2
3
2
4
5
6
VPS/PDC
DAILY/QTDN.
WEEKLY/HEBDO
7
8
9
0000
AUX
4
0
START
STOP
DATE
PR
DEBUT
FIN
EXPRESS
1
PROG
30 SEC
STANDBY/ON
TV PR +
TV PR –
VIDEO
(MONO)
L–AUDIO–R
(The specifications shown pertain specifically to the model HR-J777MS/J677MS)
: AC 110 V – 240 V`, 50/60 Hz
: AC 90 V – 260 V`, 50/60 Hz
: 19 W
: 5°C to 40°C
: –20°C to 60°C
: Horizontal only
: 400 mm x 94 mm x 278 mm
: 3.3 kg
: VHS standard
: 240 min. with E-240 video cassette
(PAL/MESECAM)
: 160 min. with T-160 video cassette
(NTSC)
: 480 min. with E-240 video cassette
(PAL/MESECAM)
: 480 min. with T-160 video cassette
(NTSC)
: PAL-type colour signal and
CCIR monochrome signal,
625 lines 50 fields
: NTSC colour and EIA
monochrome signals,
525 lines/60 fields
: DA-4 (Double Azimuth)
head helical scan system
: 45 dB
: 250 lines (PAL/MESECAM)
: 220 lines (NTSC)
: 70 Hz to 10,000 Hz (Normal audio)
20 Hz to 20,000 Hz (Hi-Fi audio)
: RCA connectors (IN x 2, OUT x 1)
This service manual is printed on 100% recycled paper.
Digitized in Heiloo Netherlands
COPYRIGHT © 2000 VICTOR COMPANY OF JAPAN, LTD.
SP/LP/EP
COLOUR SYSTEM
+8
4
SP
REVIEW
0
6
REC LINK
PR
15dB
DISLAY
NORM
TUNER/TIMER
TV channel storage
capacity
Tuning system
Channel coverage
Aerial output
Memory backup time
ACCESSORIES
Provided accessories
*Not provided in certain areas.
1/21/2018
TM
TM
PAL NTSC
: 99 positions (+AUX position)
: Frequency synthesized tuner
: VHF
(Low) 42 MHz – 175 MHz
(High)175 MHz – 470 MHz
UHF
470 MHz – 870 MHz
: UHF channels (Adjustable
E28 – E60)
: Approx. 6 months
Estimated figure based on
supplied fresh battery; actual
performance may differ.
: RF cable,
Infrared remote control unit,
"R6/UM-3" battery x 2,
Lithium battery CR2025,
Conversion plug*
No. 82811
July 2000

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Table of Contents

   Also See for JVC HR-J271MS

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   Summary of Contents for JVC HR-J271MS

  • Page 1 1/21/2018 SERVICE MANUAL VIDEO CASSETTE RECORDER HR-J271MS/J471MS/J677MS/J777MS CABLE/ DVD/SAT TV/VCR AUDIO VPS/PDC DAILY/QTDN. WEEKLY/HEBDO 0000 START STOP DATE DEBUT EXPRESS PROG 30 SEC SP/LP/EP STANDBY/ON TV PR + COLOUR SYSTEM TV PR – VIDEO (MONO) L–AUDIO–R REVIEW REC LINK...
  • Page 2: Table Of Contents

    3.1.2 Required adjustment tools ............... 3-1 3.1.3 Color (colour) bar signal,Color (colour) bar pattern ......3-1 3.1.4 Switch settings and standard precautions ........3-1 The following table lists the differing points between Models (HR-J271MS, HR-J471MS, HR-J677MS, HR-J777MS) in this series. HR-J271MS HR-J471MS...
  • Page 3: Important Safety Precautions

    Important Safety Precautions Prior to shipment from the factory, JVC products are strictly inspected to conform with the recognized product safety and electrical codes of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the following precautions when a set is being serviced.
  • Page 4 www.freeservicemanuals.info 1/21/2018 • Safety Check after Servicing Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and wires have been returned to original positions, Afterwards, perform the following tests and confirm the specified values in order to verify compliance with safety standards.
  • Page 5: Disassembly

    (L5b) Mini ope (Mini front) board assembly assembly CN7001(WR5) [HR-J271MS/J471MS] <Note 2a> • When reattaching the Front panel assembly, make sure that the door opener a of the Cassette holder assembly is low- 1.2 HOW TO READ THE DISASSEMBLY AND ASSEMBLY ered in position prior to the reinstallation.
  • Page 6 www.freeservicemanuals.info 1/21/2018 Procedures for Lowering the Cassette holder assembly As the mechanism of this unit is integrated with the Housing assembly, the holder must be lowered and the two screws un- screwed when removing the Mechanism assembly. (L2) Fig. 2 Fig.
  • Page 7 NOTE: When installing the DRUM assembly, secure the screws (S4a) in the order of a , b . (S5) (S4a) (S4b) <Note 4> (S4c) Foil side <Note 3> Q3002[HR-J271MS/ CN7001[HR-J271MS/J471MS] J471MS] CN7003[HR-J677MS/J777MS] Q3003[HR-J677MS/ (L5a) J777MS] End sensor (L4) <Note 4>...
  • Page 8: Service Position

    www.freeservicemanuals.info 1/21/2018 (5) Connect the power cord to the wall socket, and lift the 1.4 SERVICE POSITION cassette holder. In order to facilitate diagnosis and the repair of the Mecha- (Before turning on the power make sure that there is noth- nism assembly, this unit is constructed so as to allow the ing which may produce a short circuit, such as faulty sol- Mechanism and Main board assemblies to be removed to-...
  • Page 9: Mechanism Service Mode

    (1) Disconnect VCR from AC. (6) The cassette holder lowers and, when the loading has (2) Connect TPGND and TP7001(TEST) on the Main board completed, the mechanism enters the desired mode. assembly with a jump wire. [HR-J271MS, HR-J471MS] TP106 PB.FM TP111 D.FF TP4001 CTL.P...
  • Page 10: Emergency Display Function

    www.freeservicemanuals.info 1/21/2018 1.6.1 Displaying the emergency information 1.6 EMERGENCY DISPLAY FUNCTION (1) Transmit the code “59” from the Jig RCU. This unit has a function for storing the history of the past two The FDP shows the emergency content in the form of emergencies (EMG) and displaying them on each FDP.
  • Page 11: Emergency Content Description

    www.freeservicemanuals.info 1/21/2018 1.6.3 Emergency content description Note: Emergency contents “E08/E09” are for the model with Dynamic Drum (DD). CONTENT CAUSE E01: Loading EMG When the mechanism mode cannot be changed to an- 1 The mechanism is locked in the middle of mode transition. other mode even when the loading motor has rotated 2 The mechanism is locked at the loading end due to the encoder position for more than 4 seconds in the loading direction, [E:01]...
  • Page 12: Emergency Detail Information 1

    www.freeservicemanuals.info 1/21/2018 1.6.4 Emergency detail information 1 : Mechanism Operation Mode [Table of MN] The status (electrical operation mode) of the VCR and the sta- tus (mechanism operation mode/sensor information) of the Display Mechanism Operation Mode Command standby (Status without executing command) mechanism in the latest emergency can be confirmed based on POWER OFF by EMG occurrence the figure in EMG detail information 1 .
  • Page 13: Emergency Detail Information 2

    www.freeservicemanuals.info 1/21/2018 1.6.5 Emergency detail information 2 : Mechanism Sensor Information 3 – [Common table of MN and HD] The type of the cassette tape and the cassette tape winding po- sition can be confirmed based on the figure in EMG detail infor- Mechanism Sensor Information Display S-VHS SW...
  • Page 14: Syscon Circuit

    www.freeservicemanuals.info 1/21/2018 1.7 SYSCON CIRCUIT 1.7.1 Syscon CPU pin function (IC3001) [HR-J677MS, HR-J777MS] PIN NO. LABEL IN/OUT FUNCTION CTL(+) IN/OUT CTL(+)SIGNAL SVSS CTL(-) IN/OUT CTL(-)SIGNAL CTLBIAS CTL BIAS VOLTAGE CTLFB CTLAMPOUT CTL PULSE OUTPUT CTLSMTIN CTL PULSE INPUT CAPSTAN FG PULSE INPUT SVCC SYSTEM POWER AVCC...
  • Page 15 www.freeservicemanuals.info 1/21/2018 PIN NO. LABEL IN/OUT FUNCTION TU CE CHIP ENABLE OF THE TUNER UNIT TUNER SYSTEM “L” MODE:H TU FG DETECTION SIGNAL FOR TAKE-UP REEL ROTATION/TAPE REMAIN TU CLK CLOCK FOR DATA TRANSFER TO THE TUNER UNIT TU DATA TUNING DATA NMI(L) TIMER CLOCK (32.768 kHz)
  • Page 16: Mechanism Adjustment

    www.freeservicemanuals.info 1/21/2018 SECTION 2 MECHANISM ADJUSTMENT 2.1 BEFORE STARTING REPAIR AND ADJUSTMENT 2.1.1 Precautions (1) Unplug the power cable of the main unit before using your Loading motor soldering iron. (2) Take care not to cause any damage to the conductor wires when plugging and unplugging the connectors.
  • Page 17: Jigs And Tools Required For Adjustment

    www.freeservicemanuals.info 1/21/2018 2. In case of mechanical failure 2.1.4 Jigs and Tools Required for Adjustment If you cannot remove the cassette tape which is loaded be- Roller driver A/C head positioning tool Torque gauge cause of any mechanical failure, manually remove it by tak- PTU94002 PTU94010 PUJ48075-2...
  • Page 18: Maintenance And Inspection

    www.freeservicemanuals.info 1/21/2018 2.1.5 Maintenance and Inspection 1. Location of major mechanical parts In this chapter, the two mechanism speeds are described by comparing the speeds of the standard type and the high-speed FF/REW type. It is possible to distinguish between these two types of mechanism by the diameters of their capstan pulleys. The capstan pulley diameter for the standard type is approx.
  • Page 19 www.freeservicemanuals.info 1/21/2018 4. Suggested servicing schedule for main components The following table indicates the suggested period for such Guide rail Roller cam assembly service measures as cleaning,lubrication and replacement. In practice, the indicated periods will vary widely according to environmental and usage conditions.However, the indi- cated components should be inspected when a set is brought for service and the maintenance work performed if neces- sary.
  • Page 20 www.freeservicemanuals.info 1/21/2018 Symbols and numbers R4 R1 T9 T12 T11 B15 B12 B14 B13 B17 B21 B7 B8 B5 B4 B11 T14 T15 T13 T22 T24 T18 B19 Removal parts (Reference items) Replacement parts 2.2.3 Guide rail 2.2.3 Roller cam assembly 2.2.3 Cassette housing bracket 2.2.3 Opener guide 2.2.3 Door opener...
  • Page 21: Replacement Of Major Parts

    www.freeservicemanuals.info 1/21/2018 2.2 REPLACEMENT OF MAJOR PARTS 2.2.3 Cassette Holder Assembly 1. How to remove 2.2.1 Before Starting Disassembling (Phase matching (1) Remove the guide rail and roller cam assembly. (See between mechanical parts) Fig.2-2-3a.) The mechanism of this unit is closely linked with the rotary (3 lugs on the guide rail and one lug on the roller cam encoder and system controller circuits.
  • Page 22 www.freeservicemanuals.info 1/21/2018 (5) While holding the left side of the cassette holder, lift the 2. How to install (Phase matching) cassette holder assembly so that the three legs on the (1) Insert the section A of the drive arm into the section B left side are all released.
  • Page 23: Pinch Roller Arm Assembly

    www.freeservicemanuals.info 1/21/2018 2.2.6 Audio Control Head Notches Guide hole Notch 1. How to remove Relay gear (1) Remove the two screws (A) and remove the audio con- trol head together with the head base. (2) When replacing only the audio control head, remove the three screws (B) while controlling the compression spring.
  • Page 24: Capstan Motor

    www.freeservicemanuals.info 1/21/2018 2. How to install (Centering the mounting position) Loading motor board assembly When the capstan motor has once been removed and then reinstalled out of the initial correct position in the rotational Loading motor direction, the capstan motor current may be unstable during Lugs Motor guide operation in high or low temperatures.
  • Page 25: Rotary Encoder

    www.freeservicemanuals.info 1/21/2018 2.2.10 Rotary Encoder 2.2.12 Change Lever Assembly, Direct Gear, Clutch Gear and Coupling Gear 1. How to remove (1) Remove the screw (A) and remove the rotary encoder 1. How to remove by pulling it up. (See Fig. 2-2-10a.) (1) Release the two lugs of the rotary encoder guide in the arrow-indicated direction and remove the change lever assembly.
  • Page 26: Link Lever

    www.freeservicemanuals.info 1/21/2018 2.2.13 Link Lever 2.2.14 Cassette Gear, Control Cam and Worm Gear 1. How to remove 1. How to remove (1) Remove the two slit washers. (1) Remove the control cam by lifting it. (2) Remove the link lever by lifting it from the shaft retained (2) Open the two lugs of the cassette gear outward and pull by the slit washers.
  • Page 27: Loading Arm Gear (supply Or Take-up Side) And Loading Arm Gear Shaft

    www.freeservicemanuals.info 1/21/2018 (3) Install the control plate so that the section A of the load- (3) Turn the loading arm gear (take-up side) clockwise so ing arm gear shaft fits into the hole (A) of the control plate, that the notch of the loading arm gear (take-up side) is the section B of the control plate guide into the hole (B), in alignment with the projection of the loading arm gear and the control plate comes under the section C of the...
  • Page 28: Take-up Lever, Take-up Head And Control Plate Guide

    www.freeservicemanuals.info 1/21/2018 2.2.17 Take-up Lever, Take-up Head and Control Plate Guide (1) Remove the spring of the take-up lever from the main deck. Spring (2) Remove the lug (A) of the take-up lever from the main Sub brake assembly deck and pull out the take-up lever and the take-up head Lug(A) (take-up side) together.
  • Page 29: Tension Brake Assembly, Reel Disk (supply Side) And Tension Arm Assembly

    www.freeservicemanuals.info 1/21/2018 2.2.21 Tension Brake Assembly, Reel Disk (supply side) 2.2.23 Stator Assembly and Tension Arm Assembly (1) Remove the flat cable. 1. How to remove (2) Remove the two screws (A). (1) Remove the three lugs of the tension brake assembly (3) Remove the stator assembly by lifting in the arrow-indi- from the main deck and pull them off.
  • Page 30: Upper Drum Assembly

    www.freeservicemanuals.info 1/21/2018 2.2.25 Upper Drum Assembly 1. How to remove (1) Remove the stator assembly and rotor assembly. (2) Loosen the screw of the collar assembly using a 1.5 mm hexagonal wrench and remove the collar assembly. Also remove the brush, spring and cap at one time. Lower drum assembly (3) Remove the upper drum assembly and remove the washer using tweezers.
  • Page 31: Compatibility Adjustment

    www.freeservicemanuals.info 1/21/2018 2.3 COMPATIBILITY ADJUSTMENT (6) Make sure that the V.PB FM waveform varies in parallel and linearly with the tracking operation again. When re- Notes: quired, perform fine-adjustment of the guide roller of the • Although compatibility adjustment is very important, pole base assembly (supply or take-up side).
  • Page 32: Checking/adjustment Of The Height And Tilt Of The Audio Control Head

    www.freeservicemanuals.info 1/21/2018 (3) Press the channel buttons (+, –) simultaneously to enter the manual tracking mode. This also brings tracking to the center (centre). (4) Adjust the AUDIO OUT waveform and Control pulse waveform by turning the screws (1), (2) and (3) little by little until both waveforms reach maximum.
  • Page 33: Checking/adjustment Of The Standard Tracking Preset

    www.freeservicemanuals.info 1/21/2018 [Perform adjustment steps (7) to (10) only for 2 Head (1) Play back the alignment tape (A). models equipped with LP mode.] (2) Apply the external trigger signal to D.FF (E), to observe the V.PB FM waveform at the measuring point (D). (7) Then play back the alignment tape (A2).
  • Page 34 www.freeservicemanuals.info 1/21/2018 Mechanism Timing Chart EJECT CASS- Mechanism mode CASS-INS FF/REW STOP SLOW/STILL PLAY Control plate mark HIGH C CH HIGH Rotary encoder B CH HIGH A CH Control cam angle 264. 318. 412. Rotary encoder 114. 150. 167. 178. 207.
  • Page 35: Electrical Adjustment

    www.freeservicemanuals.info 1/21/2018 SECTION 3 ELECTRICAL ADJUSTMENT 3.1.4 Switch settings and standard precautions PRECAUTION The SW settings of the VCR and the standard precautions The following adjustment procedures are not only necessary for the electrical adjustments are as follows. after replacement of consumable mechanical parts or board assemblies, but are also provided as references to be re- •...
  • Page 36: Servo Circuit

    www.freeservicemanuals.info 1/21/2018 SERVO CIRCUIT (4) Transmit the code (F) from the Jig RCU to adjust so that the noise bar becomes the specified value (G) on the TV 3.2.1 Switching point monitor in the slow mode. Signal (A1) • Stairstep signal (5) Set the VCR to the Stop mode.
  • Page 37: Syscon Circuit

    3.4.1 Timer clock Signal • No signal Mode • EE Equipment • Frequency counter [HR-J271MS/J471MS] Measuring point (D1) • IC3001 pin 29 (D2) • IC3001 pin 57 (D3) • C3015 + and – - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 38 www.freeservicemanuals.info 1/21/2018 SECTION 5 PARTS LIST SAFETY PRECAUTION Parts identified by the symbol are critical for safety. Replace only with specified part numbers. < > PACKING AND ACCESSORY ASSEMBLY The instruction manual to be provided with this product will differ according to the destination. ADHESIVE TAPE 306A...
  • Page 39 1/21/2018 < > CABINET AND CHASSIS ASSEMBLY BEWARE OF BOGUS PARTS Parts that do not meet specifications may cause trouble in regard to safety and performance. We recommend that genuine JVC parts be used. 505F 518B 505D 505E 505B 518A R.PAUSE...
  • Page 40 www.freeservicemanuals.info 1/21/2018 REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 41 www.freeservicemanuals.info 1/21/2018 < > MECHANISM ASSEMBLY A/C HEAD BOARD ASSY <12> LOADING MOTOR BOARD ASSY <55> Classifi- Symbol in Part No. cation drawing Grease KYODO-SH-P NOTE:The section marked in AA and BB indicate lubrication and greasing areas. COSMO-HV56 Digitized in Heiloo Netherlands...
  • Page 42 www.freeservicemanuals.info 1/21/2018 REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 43 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ****************************** Q2051 2SC4081/QRS/-X TRANSISTOR or 2PC4081/R/-X TRANSISTOR MAIN BOARD ASSEMBLY(HR-J271MS/J471MS)<03> or 2SD1819A/QRS/-X TRANSISTOR Q2052 2SA1576A/QR/-X TRANSISTOR or 2SB1218A/QR/-X...
  • Page 44 www.freeservicemanuals.info 1/21/2018 REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 45 www.freeservicemanuals.info 1/21/2018 REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 46 www.freeservicemanuals.info 1/21/2018 REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 47 www.freeservicemanuals.info 1/21/2018 REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 48: Main Board Assembly(hr-j677ms/j777ms)<03>

    www.freeservicemanuals.info 1/21/2018 REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 49 www.freeservicemanuals.info 1/21/2018 REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 50 www.freeservicemanuals.info 1/21/2018 REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 51 www.freeservicemanuals.info 1/21/2018 REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 52 www.freeservicemanuals.info 1/21/2018 REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 53: Audio Control Head Board Assembly <12>

    www.freeservicemanuals.info 1/21/2018 REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 54: Mini Front Board Asseembly(hr-j271ms/j471ms)<28>

    ****************************** LP40077-001A BRACKET(BOARD) CN6701 QGG2502K1-10 HEADER PIN LT.BATTERY BOARD ASSEMBLY(HR-J271MS/J471MS)<93> LPA10088-01A4 LT.BATTERY BOARD ASSY BT3001 QNZ0032-001 BATTERY HOLDER ****************************** MINI FRONT BOARD ASSEEMBLY(HR-J271MS/J471MS)<28> ****************************** LPA10088-01C6 MINI FRONT BOARD ASSY R7043 QRE141J-272Y RESISTOR 2.7kØ,1/4W LT.BATTERY BOARD ASSEMBLY(HR-J677MS/J777MS)<93> R7044 QRE141J-472Y RESISTOR 4.7kØ,1/4W...
  • Page 55: Charts And Diagrams

    www.freeservicemanuals.info 1/21/2018 SECTION 4 CHARTS AND DIAGRAMS 4) Indication on schematic diagram NOTES OF SCHEMATIC DIAGRAM Voltage Indications for REC and PB mode on the sche- matic diagram are as shown below. Safety precautions The Components identified by the symbol critical for safety.
  • Page 56: Circuit Board Notes

    www.freeservicemanuals.info 1/21/2018 6. Signal path Symbols CIRCUIT BOARD NOTES The arrows indicate the signal path as follows. 1. Foil and Component sides 1) Foil side (B side) : Playback signal path Parts on the foil side seen from foil face (pattern face) are indicated.
  • Page 57: Board Interconnections

    1/21/2018 BOARD INTERCONNECTIONS [HR-J271MS , HR-J471MS] ( Page 4-15 ) OPEN AC110-240V 50/60Hz REAR OUT REAR IN FRONT AUDIO OPEN FRONT VIDEO BS-IF BIT IN/OUT DET IN/OUT VIDEO AUDIO(R) AUDIO VIDEO AUDIO(R) AUDIO ANT OUT ANT IN J6202 J6201...
  • Page 58: Video/n.audio Schematic Diagram [hr-j271ms, Hr-j471ms]

    1/21/2018 VIDEO/N.AUDIO SCHEMATIC DIAGRAM [HR-J271MS , HR-J471MS] When ordering parts , be sure to order according to NOTE : the Part Number indicated in the Parts List. MAIN ( VIDEO/N.AUDIO ) TO BS CONNECTION OPEN OPEN TO TERMINAL SHORT 4.7k...
  • Page 59: System Control Schematic Diagram [hr-j271ms, Hr-j471ms]

    1/21/2018 SYSTEM CONTROL SCHEMATIC DIAGRAM [HR-J271MS , HR-J471MS] When ordering parts , be sure to order according to NOTE : the Part Number indicated in the Parts List. TO CAP MDA TO SW.REG DRUM MOTOR CON1 ICP-N25 AL5V 0.01...
  • Page 60: Switching Regulator Schematic Diagram [hr-j271ms, Hr-j471ms]

    1/21/2018 SWITCHING REGULATOR SCHEMATIC DIAGRAM [HR-J271MS , HR-J471MS] NOTE : When ordering parts , be sure to order according to the Part Number indicated in the Parts List. TO DISPLAY SHORT AC110-240V VA5001 D5001 2A/250 50/60Hz TO SYSCON OPEN...
  • Page 61: Tuner Schematic Diagram [hr-j271ms, Hr-j471ms]

    1/21/2018 TUNER SCHEMATIC DIAGRAM [HR-J271MS , HR-J471MS] NOTE : When ordering parts , be sure to order according to the Part Number indicated in the Parts List. MAIN [TUNER] SYSCON SW.REG OPEN UN5211 0.047 R6552 OPEN R6551 OPEN OPEN OPEN VIDEO/N.AUDIO...
  • Page 62: Display And Mini Front Schematic Diagrams

    1/21/2018 DISPLAY AND MINI FRONT SCHEMATIC DIAGRAMS [HR-J271MS , HR-J471MS] When ordering parts , be sure to order according to NOTE : the Part Number indicated in the Parts List. D7012 SLR-34DU3F MAIN ( DISPLAY ) D7013 SLR-342MG3F OPEN...
  • Page 63: Bs Connection And Lithium Battery Schematic Diagrams [hr-j271ms, Hr-j471ms]

    1/21/2018 BS CONNECTION AND LITHIUM BATTERY SCHEMATIC DIAGRAMS [HR-J271MS , HR-J471MS] TERMINAL SCHEMATIC DIAGRAM [HR-J271MS , HR-471MS] NOTE : When ordering parts , be sure to order according to NOTE : When ordering parts , be sure to order according to the Part Number indicated in the Parts List.
  • Page 64: Board Interconnections [hr-j677ms, Hr-j777ms]

    www.freeservicemanuals.info 1/21/2018 BOARD INTERCONNECTIONS [HR-J677MS , HR-J777MS] AC110-240V ( Page 4-24 ) 50/60Hz OPEN OPEN ANT OUT ANT IN (L-1) (L-2) ( Page 4-27 ) R.PAUSE ( Page 4-32 ) J7107 MOD B(AL5V) SAT CONTROL MAIN ( VIDEO/AUDIO Page 4-19 ) ( ON SCREEN Page 4-21 ) ( SYSCON...
  • Page 65: Video/audio Schematic Diagram [hr-j677ms, Hr-j777ms]

    www.freeservicemanuals.info 1/21/2018 VIDEO/AUDIO SCHEMATIC DIAGRAM [HR-J677MS , HR-J777MS] 4.10 NOTE : When ordering parts , be sure to order according to the Part Number indicated in the Parts List. MAIN ( VIDEO/AUDIO ) TO SYSCON TO TERMINAL 2.7k OPEN OPEN TO SW.REG 2.2k 2.2k...
  • Page 66: On Screen Schematic Diagram [hr-j677ms, Hr-j777ms]

    www.freeservicemanuals.info 1/21/2018 4.11 ON SCREEN SCHEMATIC DIAGRAM [HR-J677MS , HR-J777MS] When ordering parts , be sure to order according to NOTE : the Part Number indicated in the Parts List. MAIN ( ON SCREEN ) OPEN LC74789N-9795 TO VIDEO/AUDIO V TO OSD V FROM OSD 1SS133 TO SYSCON...
  • Page 67: System Control And Lithium Battery Schematic

    www.freeservicemanuals.info 1/21/2018 NOTE : When ordering parts , be sure to order according to 4.12 SYSTEM CONTROL AND LITHIUM BATTERY SCHEMATIC DIAGRAMS [HR-J6777MS , HR-J777MS] the Part Number indicated in the Parts List. TO SYSCON CN3005 TO VIDEO/AUDIO (NC) TO VIDEO/AUDIO 3.58NTSC(H) TO DRUM MOTOR MESECAM(H)
  • Page 68: Switching Regulator Schematic Diagram [hr-j677ms, Hr-j777ms]

    www.freeservicemanuals.info 1/21/2018 4.13 SWITCHING REGULATOR SCHEMATIC DIAGRAM [HR-J677MS , HR-J777MS] When ordering parts , be sure to order according to NOTE : the Part Number indicated in the Parts List. TO DISPLAY R5301 AC110-240V TO SYSCON 50/60Hz B5001 SHORT OPEN AK04 OPEN TO VIDEO/AUDIO...
  • Page 69: Tuner Schematic Diagram [hr-j677ms, Hr-j777ms]

    www.freeservicemanuals.info 1/21/2018 4.14 TUNER SCHEMATIC DIAGRAM [HR-J677MS , HR-J777MS] When ordering parts , be sure to order according to NOTE : the Part Number indicated in the Parts List. MAIN ( TUNER ) [HR-J777MS] TO SW.REG TO VIDEO/AUDIO RF OUT TU6001 [HR-J677MS] OPEN...
  • Page 70: Display And Mini Ope Schematic Diagrams [hr-j677ms, Hr-j777ms]

    www.freeservicemanuals.info 1/21/2018 DISPLAY AND MINI OPE SCHEMATIC DIAGRAMS [HR-J677MS , HR-J777MS] 4.15 When ordering parts , be sure to order according to NOTE : the Part Number indicated in the Parts List. OPEN 1SS133 REC LINK TO SYSCON RD9.1ES/B2 MINI OPE CN7005 GP1U291Q 2.7k...
  • Page 71: Terminal And R.pause Schematic Diagrams [hr-j677ms, Hr-j777ms]

    www.freeservicemanuals.info 1/21/2018 4.16 TERMINAL AND R.PAUSE SCHEMATIC DIAGRAMS [HR-J677MS , HR-J777MS] NOTE : When ordering parts , be sure to order according to the Part Number indicated in the Parts List. OPEN OPEN OPEN REAR OUT OPEN OPEN OPEN 470/6.3 V.OUT AV2 IN/DECODER (L-2)
  • Page 72: Demodulator Schematic Diagram [hr-j777ms]

    www.freeservicemanuals.info 1/21/2018 4.17 DEMODULATOR SCHEMATIC DIAGRAM [HR-J777MS] When ordering parts , be sure to order according to NOTE : the Part Number indicated in the Parts List. DEMOD R6715 R6713 C6718 OPEN R6710 TO TUNER CN6701 C6712 OPEN C6722 TU MUTE OPEN C6711 OPEN...
  • Page 73 1/21/2018 WAVEFORMS [HR-J677MS, HR-J777MS] WAVEFORMS [HR-J271MS, HR-J471MS] — VIDEO/AUDIO — — VIDEO/N.AUDIO — IC1-11 IC1-13 IC1-18 IC1-1 IC1-11 IC1-13 IC1-20 IC1-27 IC1-1 IC1-27 PB 0.68 Vp-p REC/PB 0.5 Vp-p REC/PB 0.5 Vp-p REC 1.0 Vp-p REC/PB 2.2 Vp-p PB 0.44 Vp-p REC/PB 0.48 Vp-p...
  • Page 74: Main, A/c Head, Mini Front, Lithium Battery And Loading Motor Circuit Boards [hr-j271ms, Hr-j471ms]

    1/21/2018 4.18 MAIN , A/C HEAD , MINI FRONT , LITHIUM BATTERY AND LOADING MOTOR CIRCUIT BOARDS [HR-J271MS , HR-J471MS] 03 MAIN DANGEROUS VOLTAGE LPB10088-002D 12 A/C HEAD LPB10010-001A 93 LITHIUM BATTERY LPB10088-002D 28 MINI FRONT LPB10088-002D 55 LOADING MOTOR...
  • Page 75 1/21/2018 [HR-J271MS , HR-J471MS] COMPONENT PARTS LOCATION GUIDE MAIN REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION CAPACITOR C2007 A D 13O C5206 D3005 R401 B C 15O R3080...
  • Page 76 www.freeservicemanuals.info 1/21/2018 [HR-J677MS , HR-J777MS] COMPONENT PARTS LOCATION GUIDE MAIN REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION R7117 CAPACITOR C315 C4015 B C 11G CN6701 L302 R3011 B C 10G R4001 R7119 C316...
  • Page 77: Main, A/c Head, Mini Ope, R.pause, Lithium Battery And Loading Motor Circuit Boards [hr-j677ms, Hr-j777ms]

    www.freeservicemanuals.info 1/21/2018 MAIN , A/C HEAD , MINI OPE , R.PAUSE , LITHIUM BATTERY AND LOADING MOTOR CIRCUIT BOARDS [HR-J677MS , HR-J777MS] 4.19 DANGEROUS VOLTAGE 03 MAIN LPB10086-001E 12 A/C HEAD LPB10010-001A 91 R.PAUSE LPB10086-001E 93 LITHIUM BATTERY LPB10086-001E 28 MINI OPE LPB10086-001E 55 LOADING MOTOR LPB10010-001A...
  • Page 78: Fdp Grid Assignment And Anode Connection

    www.freeservicemanuals.info 1/21/2018 4.20 DEMODULATOR CIRCUIT BOARD [HR-J777MS] 4.21 FDP GRID ASSIGNMENT AND CONNECTION [A] (FDP with audio level indicator) VN LD REVIEW 14 DEMOD COMPONENT PARTS LOCATION GUIDE LPB10094-001B DEMODULATOR [HR-J777MS] VPS/PDC –15dB REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION NORM R6711 CAPACITOR CONNECTOR...
  • Page 79: Remote Control Schematic Diagram

    1/21/2018 4.23 VOLTAGE CHARTS [HR-J271MS, HR-J471MS] 4.22 REMOTE CONTROL SCHEMATIC DIAGRAM <VIDEO/AUDIO> <TUNER> <LITHIUM BATTERY> MODE MODE MODE MODE MODE MODE MODE MODE PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PIN NO. PIN NO. PIN NO. PIN NO.
  • Page 80: Voltage Charts [hr-j677ms, Hr-j777ms]

    www.freeservicemanuals.info 1/21/2018 4.24 VOLTAGE CHARTS [HR-J677MS, HR-J777MS] <VIDEO/AUDIO> <DISPLAY> <MINI OPE> MODE MODE MODE MODE MODE MODE MODE MODE PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO. PIN NO.
  • Page 81: System Control Block Diagram

    NOTE : About IC Pin No. and Signal name MAIN ( SYSCON ) XXX : HR-J677MS , HR-J777MS ( XXX ) : HR-J271MS , HR-J471MS IC3001 ( SYSTEM CONTROL MICRO PROCESSOR ) CN3003 ( CN3001 ) 65 ( 40 )
  • Page 82: Video Block Diagram

    MAIN VIDEO TERMINAL NOTE : About IC Pin No. and Symbol No. etc. SYSCON XXX : HR-J677MS , HR-J777MS MESECAM(H) ( XXX ) : HR-J271MS , HR-471MS 3.58NTSC(H) (3.58NTSC(L)) .PULSE V TO OSD ONLY USED FOR C.SYNC HR-J271MS , HR-J471MS...
  • Page 83 1/21/2018 AUDIO BLOCK DIAGRAM [HR-J271MS , HR-J471MS] 4.27 MAIN (VIDEO/N.AUDIO , TERMINAL) TUNER DEMOD (L) RF AUDIO J7101 FRONT AUDIO IN ONLY USED FOR HR-J471MS REAR AUDIO IN SYSCON REAR OUT A.MUTE(H) AUDIO N.REC ST(H) N. REC(H) 63 62 61...
  • Page 84 www.freeservicemanuals.info 1/21/2018 AUDIO BLOCK DIAGRAM [HR-J677MS , HR-J777MS] 4.28 MAIN (VIDEO/AUDIO , TERMINAL) TUNER DEMOD (R) ( VIDEO & AUDIO SIGNAL PROCESSOR ) DEMOD (L) TU AUDIO RF AUDIO J7105 A.MUTE(H) A. MUTE(H) FRONT IN INPUT A.FF A. FF AUDIO(R) SELECT USED (R-CH)

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