Table Of Contents - Sony LX40 Service Manual

Section Title
SERVICE NOTE
1. ERROR CODE INDICATION ........................................... 5
1 GENERAL
Getting Started ........................................................................... 1-1
Step 2 : Setting up the remote commander ............................. 1-1
Step 3 : Hookups ..................................................................... 1-1
Selecting a language ............................................................... 1-4
Setting the clock ...................................................................... 1-4
Presetting channels .................................................................. 1-6
Basic Operations ........................................................................ 1-8
Playing a tape .......................................................................... 1-8
Recording TV programs .......................................................... 1-8
Recording TV programs using the Dial Timer ........................ 1-9
Recording TV programs using the Timer ............................. 1-10
Additional Operations ............................................................. 1-11
Locking the VCR (Child Lock) ............................................. 1-11
Playing/searching at various speeds ...................................... 1-11
Setting the recording duration time ....................................... 1-12
Checking/changing/canceling timer settings ........................ 1-12
Recording stereo and bilingual programs ............................. 1-13
Searching using for the begining of a timer recorded
program ......................................................................... 1-13
Searching using the index function ....................................... 1-13
Searching using the time search function ............................. 1-14
Skip-searching automatically (Quick view) .......................... 1-14
Searching for a selected point on the tape ............................ 1-14
Adjusting the picture ............................................................. 1-15
Changing menu options ........................................................ 1-15
Editing with another VCR ..................................................... 1-16
Additional Information ............................................................ 1-16
General setup information ..................................................... 1-16
Index to parts and controls .................................................... 1-18
2 DISASSEMBLY
2-1. CASE, FRONT PANEL BLOCK ASSEMBLY .............. 2-1
2-2. DI-80 BOARD, FJ-32BOARD ........................................ 2-1
2-3. REAR PANEL ................................................................. 2-2
2-4. MA-405 BOARD ............................................................ 2-2
2-5. MECHANISM DECK ..................................................... 2-3
2-6. INTERNAL VIEWS ........................................................ 2-4
2-7. CIRCUIT BOARDS LOCATION ................................... 2-5
3 BLOCK DIAGRAMS
3-1. OVERALL BLOCK DIAGRAM .................................... 3-1
3-2. VIDEO BLOCK DIAGRAM .......................................... 3-3
3-3. SERVO/SYSTEM CONTROL BLOCK DIAGRAM ..... 3-5
3-4. TUNER BLOCK DIAGRAM ......................................... 3-7
3-5. AUDIO BLOCK DIAGRAM .......................................... 3-9
3-6. POWER BLOCK DIAGRAM ....................................... 3-11
4 PRINTED WIRING BOARDS AND
SCHEMATIC DIAGRAMS
4-1. FRAME SCHEMATIC DIAGRAM ................................ 4-3
4-2. PRINTED WIRING BOARDS AND SCHEMATIC
DIAGRAMS .................................................................... 4-5
• MA-405 (VIDEO, AUDIO, SERVO/SYSTEM
CONTROL, TUNER, POWER)
PRINTED WIRING BOARD ......................... 4-5
• MA-405 (1/7)(REC/PB HEAD AMP)
SCHEMATIC DIAGRAM .............................. 4-7
• MA-405 (2/7)(Y/C, AUDIO PROCESS)
SCHEMATIC DIAGRAM .............................. 4-9
• MA-405 (3/7)(SERVO/SYSTEM CONTROL)
SCHEMATIC DIAGRAM ............................ 4-11

TABLE OF CONTENTS

Page Section
• MA-405 (4/79)(AUDIO PROCESS)
• MA-405 (5/7)(TUNER)
• MA-405 (6/7)(DISPLAY CONTROL)
• MA-405 (7/7)(POWER SUPPLY)
• FJ-32 (LINE-2 IN)
• DI-80 (DIAL TIMER)
5 INTERFACE, IC PIN FUNCTION
DESCRIPTION
5-1. SYSTEM CONTROL - MECHANISM BLOCK
INTERFACE (MA-405 BOARD IC160) ....................... 5-1
5-2. SYSTEM CONTROL - SERVO PERIPHERAL
CIRCUIT INTERFACE (MA-405 BOARD IC160) ...... 5-1
5-3. SYSTEM CONTROL - SYSTEM CONTROL
PERIPHERAL CIRCUIT INTERFACE
(MA-405 BOARD IC160) .............................................. 5-2
5-4. SYSTEM CONTROL AND RF MODULATOR
- INPUT SELECTION BLOCK INTERFACE
(MA-405 BOARD IC160) .............................................. 5-2
5-5. SYSTEM CONTROL - VIDEO/RP BLOCK
INTERFACE (MA-405 BOARD IC160) ....................... 5-2
5-6. SYSTEM CONTROL - AUDIO BLOCK INTERFACE
(MA-405 BOARD IC160) .............................................. 5-2
5-7. SERVO/SYSTEM CONTROL MICROPROCESSOR
PIN FUNCTIONS (MA-405 BOARD IC160) ............... 5-3
6 ADJUSTMENTS
6-1 MECHANICAL ADJUSTMENTS ................................. 6-1
6-2. ELECTRICAL ADJUSTMENTS ................................... 6-1
2-1. PREPARATION BEFORE ADJUSTMENT ................... 6-1
2-1-1. Equipment Required ..................................................... 6-1
2-1-2. Equipment Connection ................................................. 6-1
2-1-3. Set-up of Adjustment .................................................... 6-1
2-1-4. Alignment Tape ............................................................. 6-1
2-1-5. Input/Output Levels and Impedance ............................. 6-2
2-1-6. Adjustment Sequence ................................................... 6-2
2-2. POWER SUPPLY CHECK ............................................. 6-2
2-2-1. Output Voltage Check (MA-405 Board) ...................... 6-2
2-3. SERVO SYSTEM CHECK ............................................. 6-3
2-3-1. RF Switching Position Adjustment (MA-405 Board) ... 6-3
2-4. AUDIO SYSTEM ADJUSTMENT ................................. 6-3
2-4-1. Hi-Fi Audio System Adjustment (Hi-Fi model only) ... 6-3
2-4-2. HiFi Switching Position Adjustment (MA-405 Board) 6-4
2-4-3. Normal Audio System Adjustment ............................... 6-4
2-4-4. Audio Level and Distortion Check ............................... 6-4
2-4-5. Audio Noise Check ....................................................... 6-4
2-4-6. ACE Head Adjustment .................................................. 6-4
2-4-7. E-E Output Level Check ............................................... 6-4
2-4-8. Frequency Response Check .......................................... 6-4
2-5. ADJUSTING PARTS LOCATION DIAGRAM ............. 6-6
7 REPAIR PARTS LIST
7-1. EXPLODED VIEWS ...................................................... 7-1
7-1-1. FRONT PANEL AND UPPER CASE SECTION ........ 7-1
7-1-2. CHASSIS SECTION .................................................... 7-2
7-1-3. MECHANISM DECK SECTION-1 ............................. 7-3
7-1-4. MECHANISM DECK SECTION-2 ............................. 7-4
7-1-5. MECHANISM DECK SECTION-3 ............................. 7-5
7-2. ELECTRICAL PARTS LIST .......................................... 7-6
- 3 -
Title
SCHEMATIC DIAGRAM ............................ 4-13
SCHEMATIC DIAGRAM ............................ 4-15
SCHEMATIC DIAGRAM ............................ 4-17
SCHEMATIC DIAGRAM ............................ 4-19
PRINTED WIRING BOARD AND
SCHEMATIC DIAGRAM ............................ 4-23
PRINTED WIRING BOARD AND
SCHEMATIC DIAGRAM ............................ 4-24
Page