Hitachi DV-W1U specifications Troubleshooting

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3. Troubleshooting

3-1. VIDEO CIRCUIT

NO IMAGE

ARE SIGNALS

OUTPUT FROM VIDEO

OUTPUT TERMINAL?

No

ARE SIGNALS

OUTPUT FROM PG2201 pins 17, 15, 13, 11, 9, 7, 3?

No

ARE SIGNALS

OUTPUT FROM

IC2202 pins 35, 33, 29,

28, 25, 24?

No

ARE SIGNALS IC2202 pins

14, 15, 16, 20, 21?

Yes

+5V AT IC2202

pins 46, 34, 32, 30, 27,

19, 11, 1 (VDD)?

Yes

IS VOLTAGE AT IC2202 pins 44 (RESET) H LEVEL?

Yes

IS CLOCK IN

IC2202 pin 48?

Yes

REPLACE IC2202

Yes

Yes

Yes

No

No

No

No

CHECK SIGNAL

CABLE/ MONITOR

CHECK VIDEO OUTPUT SECTOR (PG1302/ J1307/ J1302/ J1306/ J1361) OF JAK PWB

CHECK IC3301/ IC3302 of

JAK PWB

CHECK IC1201/ IC1101/ IC1601

CHECK POWER

SUPPLY CIRCUIT

CHECK IC1601

CHECK X2201/ R1218

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Contents DV-W1U Safety Precautions Hitachi Sales CorporationValue units used in parts list Contents Chapter General Information UL/CSA/FCC CD-R/RWCRD-RA1WO2DVD/VCD/CD-DA CVD/SVCD/DVCD CD-R/CD-RW NtscAccessories Troubleshooting Audio Circuit Check IC1512 and IC1513 No Sound Are There SignalsBreakdown CRD-RA1 Track no REC StandbyPlayer Drive Recorder DriveChapter S a S S E M B L Y Disassembly Procedure Diagrams JAK board and REG board DVD-ROM and DEC board P L O D E D E W Mechanical Parts List Electrical Parts List Symbol DescriptionElectrolytic 10UF Description Symbol Chip Resistor 56KOHM+-5% 0.1W Transformer Deck DECCD-R DVD-ROMLCD Display Flhp Schematic Diagram LCD Display FlhpCDR Switch SW-CDR Schematic Diagram Rear Jack JAK Schematic Diagram PG2201Regulator REG Schematic Diagram Regulator REGDECK-1 DEC Schematic Diagram DECK-1 DECDECK-2 DEC Mpeg DecoderDEC Circuit Board Identification of Parts Location SW-DVD Circuit Board SW-CDR Circuit BoardJAK Circuit Board Identification of Parts Location JAKIF, REG Circuit Boards Identification of Parts LocationFlhp Circuit Board FlhpBlock Diagram DV-W1U