Table Of Contents - JVC HR-S3902US Service Manual

Section
Important Safety Precautions
INSTRUCTIONS
1. DISASSEMBLY
1.1 Manually removing the cassette tape ........................................ 1-1
1.2 Removing the major parts .......................................................... 1-2
1.2.1 How to read the procedure table .......................................... 1-2
1.2.2 Disassembly procedure ....................................................... 1-2
1.3 Emergency display function ....................................................... 1-4
1.3.1 Displaying the EMG information .......................................... 1-4
1.3.2 Clearing the EMG history ..................................................... 1-4
1.3.3 Details of the OSD display in the EMG display mode .................. 1-5
1.3.4 EMG content description ...................................................... 1-6
1.3.5 EMG detail information<1> .................................................. 1-7
1.3.6 EMG detail information<2> .................................................. 1-8
1.3.7 EMG detail information<3> .................................................. 1-8
1.4 Service position .......................................................................... 1-9
1.4.1 How to set the "Service position" ......................................... 1-9
1.5 Jig RCU mode ............................................................................ 1-9
1.5.1 Setting the Jig RCU mode ................................................... 1-9
1.5.2 Setting the User RCU mode ................................................ 1-9
1.6 Mechanism service mode .......................................................... 1-9
1.6.1 How to set the "Mechanism service mode" .......................... 1-9
1.6.2 How to exit from the "Mechanism service mode" ................. 1-9
1.7 Maintenance and inspection .................................................... 1-10
1.7.1 Cleaning ............................................................................. 1-10
1.7.2 Lubrication ......................................................................... 1-10
1.7.3 Suggested servicing schedule for main components ................. 1-10
2. MECHANISM
Refer to the SERVICE MANUAL No.86700(MECHANISM ASSEMBLY)
3. ADJUSTMENT
3.1 Before adjustment ...................................................................... 3-1
3.1.1 Precaution ............................................................................. 3-1
3.1.2 Required test equipments .................................................... 3-1
3.1.3 Required adjustment tools ................................................... 3-1
3.1.4 Color(colour) bar signal, color(colour) bar pattern ............... 3-1
3.1.5 Switch settings ..................................................................... 3-1
3.1.6 Manual tracking mode (Auto tracking ON/OFF) setting ................. 3-1
3.1.7 EVR sdjustment ............................................................................. 3-2
3.2 Mechanism compatibility adjustment ......................................... 3-2
3.2.1 Tension pole position ............................................................ 3-3
3.2.2 FM waveform linearity .......................................................... 3-3
3.2.3 Height and tilt of the A/C head ............................................. 3-3
3.2.4 A/C head phase(X-value) ..................................................... 3-4
3.3 Electrical Adjustment .................................................................. 3-4
3.3.1 Servo circuit ......................................................................... 3-4
3.3.1.1 Switching point ................................................................ 3-4
3.3.1.2 Slow tracking preset ........................................................ 3-5
3.3.2 Video circuit .......................................................................... 3-5
3.3.2.1 EE Y/PB Y(S-VHS/VHS)level .......................................... 3-5
The following table indicates main different points between models HR-S3902US, HR-S3912US, HR-S3912UC, HR-S5902US, HR-
S5912US and HR-S5912UC.
MODEL
HR-S3902US
ITEM
BODY COLOR MOLD-BLACK PAINT-PURE SILVER PAINT-PURE SILVER PAINT-BLACK PAINT-PURE SILVER PAINT-PURE SILVER
RCU ILLUMI FUNCTION
FLYING ERASE HEAD
ZERO FRAME EDIT
INSERT
AUDIO DUBBING

TABLE OF CONTENTS

Title
HR-S3912US
NOT USED NOT USED
NOT USED NOT USED
NOT USED NOT USED
NOT USED NOT USED
NOT USED NOT USED
Page Section
4. CHARTS AND DIAGRAMS
Refer to the SERVICE MANUAL No.82946(HR-S2902US)
5. PARTS LIST
5.1 EXPLODED VIEW ...................................................................... 5-1
5.1.1 PACKING AND ACCESSORY ASSEMBLY<M1> ................ 5-1
5.1.2 FINAL ASSEMBLY<M2> ...................................................... 5-2
5.1.3 MECHANISM ASSEMBLY<M4> .......................................... 5-3
5.2 PARTS LIST ................................................................................ 5-4
PACKING AND ACCESSORY ASSEMBLY<M1> ........................... 5-4
FINAL ASSEMBLY<M2> ................................................................. 5-4
MECHANISM ASSEMBLY<M4> ..................................................... 5-4
MAIN BOARD ASSEMBLY<03> .................................................... 5-5
A/C HEAD BOARD ASSEMBLY<12> .......................................... 5-12
ADV.JOG/SW BOARD ASSEMBLY<38> ...................................... 5-12
LOADING MOTOR BOARD ASSEMBLY<55> ............................. 5-12
R.PAUSE BOARD ASSEMBLY<99> ............................................. 5-12
HR-S3912UC HR-S5902US
NOT USED USED(GLOW)
NOT USED USED
NOT USED USED
NOT USED USED
NOT USED USED
Title
HR-S5912US HR-S5912UC
USED(GLOW) USED(GLOW)
USED USED
USED USED
USED USED
USED USED
Page