JVC GV-SP2U GV-SP2E Repair Manual

TABLE OF CONTENTS
SectionTitlePageSectionTitlePage
Important Safety Precautions4. CHARTS AND DIAGRAMS
INSTRUCTIONSNOTES OF SCHEMATIC DIAGRAM ................................ 4-1
CIRCUIT BOARD NOTES ................................................. 4-2
1. DISASSEMBLY4.1 BOARD INTERCONNECTIONS ................................ 4-3
1.1 DISASSEMBLY FLOW CHART ................................. 1-14.2 SWITCHING REGULATOR SCHEMATIC DIAGRAM 4-5
1.2 DISASSEMBLING AND REASSEMBLING ................ 1-14.3 SYSTEM CONTROL SCHEMATIC DIAGRAM .......... 4-7
1.3 DISASSEMBLY.......................................................... 1-24.4 PRINTER SCHEMATIC DIAGRAM ............................ 4-9
1.4 WIRING TREATMENT............................................... 1-34.5 USB SCHEMATIC DIAGRAM ................................. 4-11
1.5 PRINTER LED DISPLAY SPECIFICATIONS ............... 1-44.6 INK SWITCH, TRAY SWITCH AND SENSOR(1) � (6), (8)
1.5.1 Power LED .......................................................... 1-4SCHEMATIC DIAGRAMS .............................................. 4-13
1.5.2 Print LED/Error LED ............................................. 1-44.7 MAIN CIRCUIT BOARD .......................................... 4-15
1.5.3 Resetting Error Display ........................................ 1-44.8 SWITCHING REGULATOR CIRCUIT BOARD ......... 4-21
1.6 DESCRIPTION OF NEW TECHNOLOGY .................. 1-54.9 INK SWITCH, TRAY SWITCH AND SENSOR (1) � (6), (8)
1.6.1 Printer Controller(IC1) Pin function (1/3) .............. 1-5CIRCUIT BOARDS......................................................... 4-23
1.6.2 Printer engine(IC201) Pin function (1/2) ............... 1-84.10 BLOCK DIAGRAM ................................................ 4-25
2. MECHANISM ADJUSTMENT5. PARTS LIST
2. 1 BEFORE SERVICING/DISASSEMBLING ................. 2-15.1 PACKING AND ACCESSORY ASSEMBLY <M1> .... 5-1
2.1.1 Precautions .......................................................... 2-15.2 CABINET AND CHASSIS ASSEMBLY <M2> .......... 5-2
2.1.2 Disassembling and reassembling ........................ 2-15.3 MECHANISM ASSEMBLY <M3> ............................ 5-5
2.1.3 Screws and washers used in the Mechanism5.4 ELECTRICAL PARTS LIST......................................... 5-8
Parts and Board Assembly .................................. 2-1SW.REGULATOR BOARD ASSEMBLY <01> ................ 5-8
2.2 DISASSEMBLING/REASSEMBLING OF THEMAIN BOARD ASSEMBLY <03> .................................. 5-9
MECHANISM............................................................ 2-2INK SWTCH BOARD ASSEMBLY <37> ...................... 5-11
2.3 MECHANISM PHASE CHECK AND ADJUSTMENT . 2-5TRAY SWITCH BOARD ASSEMBLY <38> .................. 5-12
2.4 REPLACING THE REGIST ROLLER ASSEMBLY/SENSOR(1) BOARD ASSEMBLY <66> ....................... 5-12
PLATEN ROLLER ASSEMBLY .................................. 2-6SENSOR(2) BOARD ASSEMBLY <67> ....................... 5-12
2.5 REPLACING THE HEAD ASSEMBLY ........................ 2-7SENSOR(3) BOARD ASSEMBLY <68> ....................... 5-12
2.6 THERMAL HEAD POSITION ADJUSTMENT............ 2-8SENSOR(4) BOARD ASSEMBLY <80> ....................... 5-12
2.6.1 Outline ................................................................. 2-8SENSOR(5) BOARD ASSEMBLY <81> ....................... 5-12
2.6.2 Adjustment Procedure......................................... 2-8SENSOR(6) BOARD ASSEMBLY <82> ....................... 5-12
2.7 WIRING TREATMENT METHODS .......................... 2-10SENSOR(8) BOARD ASSEMBLY <94> ....................... 5-12
3. ELECTRICAL ADJUSTMENT
3.1 BEFORE ADJUSTMENTS ......................................... 3-1
3.1.1 Precautions .......................................................... 3-1
3.1.2 Equipment Required for Adjustment ................... 3-1
3.2 POWER SUPPLY CIRCUIT........................................ 3-1
3.2.1 SWD 24V Output Power Supply .......................... 3-1
3.3 PRINT TEST .............................................................. 3-2
3.3.1 Test Procedure..................................................... 3-2
3.3.2 Test Patterns........................................................ 3-2