JVC HR-S9700EK, Service Manual

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Important Safety Precautions
INSTRUCTIONS
1. DISASSEMBLY
1.1 DISASSEMBLY FLOW CHART ............................................................ 1-1
1.2 HOW TO READ THE DISASSEMBLY AND ASSEMBLY ...................... 1-1
1.3 DISASSEMBLY/ASSEMBLY METHOD ................................................ 1-1
1.4 SERVICE POSITION ............................................................................ 1-4
1.4.1 How to take out the Mechanism and Main board assemblies ......... 1-4
1.4.2 Precautions for cassette loading in the "SERVICE POSITION" ...... 1-5
1.4.3 Cassette loading and ejection methods
in the “SERVICE POSITION”(See Fig. 1-4-3). ................................ 1-5
1.5 MECHANISM SERVICE MODE ........................................................... 1-5
1.5.1 How to set the "MECHANISM SERVICE MODE" ............................ 1-5
1.6 EMERGENCY DISPLAY FUNCTION ................................................... 1-6
1.6.1 Displaying the emergency information ............................................ 1-6
1.6.2 Clearing the emergency history ....................................................... 1-6
1.6.3 Emergency content description ....................................................... 1-7
1.6.4 Emergency detail information
1 ...................................................... 1-8
1.6.5 Emergency detail information 2 ..................................................... 1-9
1.7 SERVICING THE VIDEO NAVIGATION FUNCTION ......................... 1-10
1.7.1 Copying the video navigation data ................................................ 1-10
1.7.2 Erasing the video navigation data (Initialization) ........................... 1-11
1.7.3 Factory setting level during shipment ........................................... 1-11
2. MECHANISM ADJUSTMENT
2.1 BEFORE STARTING REPAIR AND ADJUSTMENT ............................. 2-1
2.1.1 Precautions ...................................................................................... 2-1
2.1.2 Checking for Proper Mechanical Operations ................................... 2-1
2.1.3 Manually Removing the Cassette Tape ........................................... 2-1
2.1.4 Jigs and Tools Required for Adjustment .......................................... 2-2
2.1.5 Maintenance and Inspection ............................................................ 2-3
2.2 REPLACEMENT OF MAJOR PARTS .................................................. 2-6
2.2.1 Before Starting Disassembling (Phase matching between
mechanical parts) ............................................................................ 2-6
2.2.2 How to Set the Mechanism Assembling Mode ................................ 2-6
2.2.3 Cassette Holder Assembly .............................................................. 2-6
2.2.4 Pinch Roller Arm Assembly ............................................................. 2-8
2.2.5 Guide Arm Assembly and Press Lever Assembly ............................ 2-8
2.2.6 Audio Control Head ......................................................................... 2-8
2.2.7 Loading Motor .................................................................................. 2-8
2.2.8 Capstan Motor ................................................................................. 2-9
2.2.9 Pole Base Assembly (supply or take-up side) ................................. 2-9
2.2.10 Rotary Encoder ........................................................................... 2-10
2.2.11 Clutch Unit .................................................................................. 2-10
2.2.12 Change Lever Assembly, Direct Gear, Clutch Gear and Coupling Gear ...... 2-10
2.2.13 Link Lever ................................................................................... 2-11
2.2.14 Cassette Gear, Control Cam and Worm Gear ............................ 2-11
2.2.15 Control Plate ............................................................................... 2-11
2.2.16 Loading Arm Gear (supply or take-up side) and Loading Arm Gear Shaft ... 2-12
2.2.17 Take-up Lever, Take-up Head and Control Plate Guide ............. 2-13
2.2.18 Capstan Brake Assembly .......................................................... 2-13
2.2.19 Sub Brake Assembly (take-up side) ........................................... 2-13
2.2.20 Main Brake Assembly (take-up side), Reel Disk
(take-up side) and Main Brake Assembly (supply side) .............. 2-13
2.2.21 Tension Brake Assembly, Reel Disk (supply side) and
Tension Arm Assembly ............................................................... 2-14
2.2.22 Idler Lever, Idler Arm Assembly .................................................. 2-14
2.2.23 Stator Assembly .......................................................................... 2-14
2.2.24 Rotor Assembly .......................................................................... 2-14
2.2.25 Upper Drum Assembly ................................................................ 2-15
2.3 COMPATIBILITY ADJUSTMENT ........................................................ 2-16
2.3.1 Checking/Adjustment of FM Waveform Linearity ........................... 2-16
2.3.2 Checking/Adjustment of the Height and Tilt of the Audio Control Head .... 2-17
2.3.3 Checking/Adjustment of the Audio Control Head Phase (X-Value) ..... 2-17
2.3.4 Checking/Adjustment of the Standard Tracking Preset ................. 2-18
2.3.5 Checking/Adjustment of the Tension Pole Position ....................... 2-18
3. ELECTRICAL ADJUSTMENT
3.1 PRECAUTION ..................................................................................... 3-1
3.1.1 Required test equipments .............................................................. 3-1
3.1.2 Required adjustment tools ............................................................... 3-1
TABLE OF CONTENTS
Section Title Page Section Title Page
3.1.3 Color (colour) bar signal,Color (colour) bar pattern ........................ 3-1
3.1.4 Switch settings and standard precautions ....................................... 3-1
3.1.5 EVR Adjustment .............................................................................. 3-1
3.2 SERVO CIRCUIT .................................................................................. 3-2
3.2.1 Switching point ................................................................................ 3-2
3.2.2 Slow tracking preset ........................................................................ 3-2
3.2.3 Dynamic Drum preset ...................................................................... 3-2
3.3 VIDEO CIRCUIT ................................................................................... 3-3
3.3.1 D/A level .......................................................................................... 3-3
3.3.2 EE Y level ........................................................................................ 3-3
3.3.3 PB Y level (S-VHS / VHS) ............................................................... 3-3
3.3.4 REC color (colour) level ................................................................... 3-4
3.3.5 Video EQ (Frequency response) ..................................................... 3-4
3.3.6 AUTO PICTURE initial setting ......................................................... 3-5
3.4 AUDIO CIRCUIT ................................................................................... 3-5
3.4.1 Audio REC FM ................................................................................. 3-5
3.5 SYSCON CIRCUIT ............................................................................... 3-5
3.5.1 Timer clock ...................................................................................... 3-5
4. CHARTS AND DIAGRAMS
NOTES OF SCHEMATIC DIAGRAM .......................................................... 4-1
CIRCUIT BOARD NOTES ........................................................................... 4-2
4.1 BOARD INTERCONNECTIONS .......................................................... 4-3
4.2 VIDEO/AUDIO AND AUDIO ERASE SCHEMATIC DIAGRAMS ............ 4-5
4.3 VSC SCHEMATIC DIAGRAM ................................................................. 4-7
4.4 SYSTEM CONTROL SCHEMATIC DIAGRAM ....................................... 4-9
4.5 SWITCHING REGULATOR SCHEMATIC DIAGRAM .......................... 4-11
4.6 TUNER SCHEMATIC DIAGRAM .......................................................... 4-13
4.7 CONNECTION SCHEMATIC DIAGRAM .............................................. 4-15
4.8 3D DIGITAL/2M SCHEMATIC DIAGRAM ............................................. 4-17
4.9 TERMINAL SCHEMATIC DIAGRAM .................................................... 4-19
4.10 DEMODULATOR SCHEMATIC DIAGRAM ..................................... 4-21
4.11 S-SUB SCHEMATIC DIAGRAM ...................................................... 4-23
4.12 NAVIGATION SCHEMATIC DIAGRAM [LPB10108-001*] ............... 4-25
4.13 NAVIGATION SCHEMATIC DIAGRAM [LPB10108-002*] ............... 4-27
4.14 SW/DISPLAY AND REC SAFETY SCHEMATIC DIAGRAMS ........ 4-29
4.15 3D DIGITAL/2M AND S-SUB CIRCUIT BOARDS ........................... 4-31
4.16 TERMINAL CIRCUIT BOARD .......................................................... 4-32
4.17 MAIN, A/C HEAD, AUDIO ERASE AND LOADING MOTOR
CIRCUIT BOARDS ........................................................................... 4-33
4.18 NAVIGATION CIRCUIT BOARD ...................................................... 4-36
4.19 DEMODULATOR, SW/DISPLAY AND REC SAFETY CIRCUIT BOARDS . 4-37
4.20 FDP GRID ASSIGNMENT AND ANODE CONNECTION ............... 4-39
4.21 REMOTE CONTROL AND MEMBRANE DOOR
SCHEMATIC DIAGRAMS ................................................................ 4-40
4.22 WAVEFORMS .................................................................................. 4-41
4.23 VOLTAGE CHARTS ......................................................................... 4-43
4.24 CPU PIN FUNCTION ....................................................................... 4-45
4.25 SYSTEM CONTROL BLOCK DIAGRAM ......................................... 4-47
4.26 VIDEO BLOCK DIAGRAM ............................................................... 4-49
4.27 AUDIO BLOCK DIAGRAM ............................................................... 4-53
5. PARTS LIST
5.1 PACKING AND ACCESSORY ASSEMBLY <M1> ............................... 5-1
5.2 CABINET AND CHASSIS ASSEMBLY <M2> ...................................... 5-2
5.3 MECHANISM ASSEMBLY <M4> ......................................................... 5-4
5.4 ELECTRICAL PARTS LIST .................................................................. 5-6
MAIN BOARD ASSEMBLY <03> .......................................................... 5-6
3D DIGITAL/2M BOARD ASSEMBLY <05> ........................................ 5-13
TERMINAL BOARD ASSEMBLY <06> ............................................... 5-14
AUDIO CONTROL HEAD BOARD ASSEMBLY <12> ........................ 5-16
DEMOD BOARD ASSEMBLY <14> ................................................... 5-16
S-SUB BOARD ASSEMBLY <15> ...................................................... 5-17
NAVIGATION BOARD ASSEMBLY <19> [LPB10108-001*] ............... 5-17
NAVIGATION BOARD ASSEMBLY <19> [LPB10108-002*] ............... 5-18
DISPLAY BOARD ASSEMBLY <28> .................................................. 5-19
REC SAFETY BOARD ASSEMBLY <32> .......................................... 5-20
AUDIO ERASE BOARD ASSEMBLY <46> ........................................ 5-20
LOADING MOTOR BOARD ASSEMBLY <55> .................................. 5-20
HR-S9700EK HR-S9700EU
VIDEO SYSTEM PAL/NTSC PB ON PAL TV PAL/MESECAM (MANUAL)/NTSC PB ON PAL TV
TUNER (BROADCASTING STANDARD)
1
B/G, D/K
TUNER (STEREO DECODER) NICAM NICAM/A2
TUNER (RF OUT SYSTEM)
1
G, K
DISPLAY (LANG.) ENGLISH 14LANGUAGE
TIMER (VCR PLUS+) VIDEO PLUS+ DELUXE SHOW VIEW DELUXE
TIMER (VPS) NOT USED USED
The following table lists the differing points between Models (HR-S9700EK AND HR-S9700EU) in this series.