Geräte Informationen

Hitachi VT-FX633AW Videorecorder
Hersteller:
Hitachi
Modell: VT-FX633AW
Datum: 1998
Kategorie: Audio, Video, TV, Multimedia
Gruppe: Videorecorder
Beschreibung:
Informationen:

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Dokumenttyp: Serviceanleitung Hitachi-8896-Manual-Page-1-Picture
Seitenanzahl: 67
Dateigröße: 4.62 Mbytes (4844935 Bytes)
Sprache: Englisch
Revision:
Dokument-ID/Nummer: 4803E
Datum: 01 Mai 1998
Qualität: Gescanntes Dokument, alles ist lesbar.
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MD5: da6c5afd3f5364de382d6a7e66406fe9
Downloads: 109 seit dem 16 April 2017
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CHAPTER 1 GENERAL INFORMATION C O N TE1. Specifications ... 2. Comparison with Previous M o d e l ... 3. Comparison of Main Control IC s ... 4. Tips for S ervicing ... 4-1. Trouble Display Function ... 4-2. How to Remove the Cassette when a Malfunction Has Occurred in the Mechanism ■ 4-3. Instructions on U se ... CHAPTER 2 DISASSEMBLY 1-1 ■ 1-2 ■1-3 1-4 1-4 1-5 1-6 1. Before Starting Disassembly ... 2-1 2. Disassembly M ethod ... 2-1 Parts Hierarchy C h a rt ... 2-1 Disassembly Procedure Diagrams ... 2-2 2-1. Top cover, front panel, rear panel and US-FL m echanism ... 2-2 2-2. Cassette door and b u tton s ... 2-2 2-3. LED b o a rd ... 2-3 2-4. Front piece and LCD board or LED board ... 2-3 2-5. US mechanism/MAS board assem bly ... 2-3 2-6. Separation of MAS board from US mechanism ■■■■ 2-4 2-7. Procedure to remove only the US mechanism ... 2-4 3. Cautions When Reinstalling the US M echanism ... 2-5 CHAPTER 3 ELECTRIC CIRCUIT ADJUSTMENT Service Position 1. Servicing position during electrical adjustm ent ... 3-1 2. Servicing positions when repairing and checking c irc u its ... 3-1 2-1. Procedure to set the LCD and LED board to the servicing positions ... 3-1 2-2. Procedere to set the MAS board to the service position ... 3-1 3. Be careful of electric sh ocks ... 3-1 Electrical Circuit Adjustment 1. Test equipment/jigs necessary for adjustment ... 3-2 2. Cautions on adjustm ent ... 3-2 3. Tips for adjustm ent ... 3-2 3-1. Procedure to reset the main m icroprocessor ... 3-2 3-2. Procedure to switch off the blue background fu nctio n ... 3-2 3-3. Procedure to obtain the EP head playback mode (X-value adjustment test m ode) ... 3-2 4. Connections of test equipm ent ... 3-2 5. Test Points and Adjustment p o in ts ... 3-3 N TS 6. Servo Circuit Adjustments ... 6-1. Switching point adjustment ... 6-2. X-value adjustment ... 6-3. Vertical jitter adjustm ent ... 6-4. Forward slow tracking preset adjustm ent ... 6-5. Reverse slow tracking preset adjustment ... 7. Audio/MTS Circuit Adjustm ents ... 7-1. Hi-Fi audio playback level ch e ck ... 7-2. MTS input level adjustm ent ... 8. Cylinder Rotation Accumulated Hours of Usage D isplay ... 9. List of Data in EEPROM and Initial Settings ... 10. List of Hidden Commands ... 10-1. Mode setting commands during a djustm e nt- 10-2. EEPROM initialization commands ... 11. Initial Settings of IC903(EEPROM) ... 12. Caution When Replacing IC903(VCR EEPROM) ■3-4 •3-4 ■3-4 ■3-5 ■3-5 ■3-5 ■3-6 •3-6 ■3-6 -3-6 •3-7 ■3-7 ■3-7 -3-7 •3-8 ■3-8 CHAPTER 4 EXPLODED VIEWS ) 1. CABINET SECTION ... 4-1 2. US-MECHANISM (TOP VIEW) SECTION ... 4-2 3. US-MECHANISM (BOTTOM VIEW) SECTION ... 4-3 4. US-FL MECHANISM SECTION ... 4-4 CHAPTER 5 REPLACEMENT PARTS LIST ] 1. MECHANIS M PARTS L IS T ... 5-1 2. ELECTRIC/L PARTS L IS T ... 5-2 CHAPTER 6 SCHEMATIC, CIRCUIT BOARD AND BLOCK DIAGRAMS | J Schematic and circuit board diagrams CONNECTION DIAGRAM ... 6-1 SCHEM ATIC/CIRCUIT LCD DISPLAY[LCD] (For FX633AW ) ... 6-2 / 6-18 LCD DISPLAY GRID T A B LE ... 6-3 / - LED[LED] (For FX630AW ) ... 6-3 / 6-18 CYL. MOTOR DRIVE ... 6-4 / - CAPSTAN MOTOR ... 6-4 / - MECHANISM SENSOR[MAS] ... 6-5 / 6-22 MAIN CONTROL[MAS] ... 6-6 / 6-22 LED[LED] (For FX633AW ) ... 6-7 / 6-19 MTS/JACK[MAS] ... 6-8 / 6-22 PRE AMP/FM AU D IO [M AS] ... 6-10 / 6-22 LUMA/CHROMA,LINEAR AUDIO[MAS] ... 6-14 / 6-22 SWITCHING REGULATOR[MAS] ... 6-1 6/6 -22 SERVO W AVEFORMS ... 6-5 LUMA/CHROMA W AVEFORM S ... 6-13 Block diagrams 1. MAIN C O N TRO L ... 6-30 2. SE R VO ... 6-32 3. A U D IO ... 6-34 4. VIDEO ... 6-36 5. POWER SU PPLY ... 6-38 Microprocessor Pin Function Tables 1. LCD Driver (IC 701) ... 6-40 2. M ainuP (IC901) ... 6-41 CHAPTER 7 TROUBLE DISPLAY AND TROUBLESHOOTING . Trouble Display Function ... 7-2 Troubleshooting the Switching R egulator ... 7-6

Hitachi-8896-Manual-Page-1-Picture


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