This document serves as a service manual for the ORION COMBI 3601VT, a color television and video cassette recorder (VCR) combination unit. It provides comprehensive information for servicing, including technical specifications, disassembly instructions, adjustment procedures, and parts lists.
Function Description:
The ORION COMBI 3601VT is an integrated entertainment system that combines a color television with a 1/2-inch video cassette recorder. It allows users to watch television broadcasts and play or record video cassettes. The unit supports various video standards and offers features for both TV viewing and VCR operations.
Important Technical Specifications:
General:
- Model: ORION COMBI 3601VT
- Chassis Code: A
- Display: 14-inch (335.4mmV measured diagonally) Color CRT with 90-degree deflection.
- Power Source: 230V AC, 50Hz.
- Power Consumption (Approx.): 55W at AC (at TV and VCR ON), 6W at AC in Standby mode.
- Dimensions (Approx.): 362mm (W) x 369mm (D) x 382mm (H).
- Weight (Approx.): Net 12.8 Kg, Gross 14.5 Kg.
- Cabinet Material: Front: PS/ABS (94HB/94V2/94V0), Rear: PS/ABS (94HB/94V2/94V0), Jack Panel: PS/ABS (94HB/94V2/94V0).
- Regulation Safety: UL, BS, NF, NEMKO, SEMKO, NZ, HOMOLO, FEMKO, SABS, DEMKO, IEC65, CNS, SISIR, NOM, AS3159, UNE, GOST.
- Regulation Radiation: FCC, DOC, FTZ, PTT, CE, SEV, SABA, SI, NF, NZ, HOMOLO, UNE, CNS, CISPR13, DENTORI, AS/NZS.
- X-Radiation: PTB, DHHS, HWC, DENTORI.
- Temperature: Operation 5°C to 40°C, Storage -20°C to 60°C.
- Operating Humidity: Less than 80% RH.
- Antenna Input Impedance: VHF/UHF 75 ohm unbalanced.
TV Section:
- Tuner: Contactless Electric tuner (Oscar W/ HYPER).
- Receiving Channels: VHF (LOW E2-E4 ch, HIGH E5-E12 ch), CATV (S1-S41 ch), UHF (E21-E69 ch).
- Tuning System: Frequency synchronization.
- Preset Channels: 80 channels.
- Intermediate Frequency: Picture (FP) 38.9 MHz, Sound (FS) 33.4 MHz, FP-FS 5.5 MHz.
- Color System: PAL.
- Stereo/Dual TV Sound: German.
- Horizontal Resolution at SP Mode: 240 Lines.
- Audio Signal Input Level (Line): -3.8 dB / 50 Kohm.
- Audio Signal Output Level (Line): -3.8 dB / 1 Kohm.
- S/N Ratio at SP Mode: 42 dB.
- Harmonic Distortion: 1.5% (1KHz).
- Frequency Response: at SP Mode 100 Hz ~ 10 KHz.
- Speakers: 3 inches, 8 ohm x 1 pcs. Max 1.5W Typical, 10% 1.0W Typical.
VCR Section:
- VCR Format: VHS Standard, PAL.
- Video Recording System: Rotary, slant azimuth two-head helical scan system (Luminance Component: FM recording, Chrominance Component: Low frequency converted direct recording).
- Cassette Tape: VHS type video cassette tape (Width 12.65mm, 1/2 Inch).
- Tape Speed (PAL/SECAM): SP 23.39 mm/sec, LP 11.69 mm/sec.
- Recording/Playback Time (PAL/SECAM): at SP Mode Max. 300 min. (with E-300 cassette), at LP Mode Max. 600 min. (with E-300 cassette).
- Rewind/Fast Forward Time (Approx.): FF: 2'15"/Rew: 1'48" (T-120 cassette), FF: 3'40"/Rew: 2'50" (E-180 cassette).
- Search Speed (PAL): SP 5 and 7 Times.
- Slow Speed: SP 1/5~1/30 Times.
- Frame Advance: SP 1/10 Times.
- Cassette Loading System: Front Cassette Loading System.
- Tape Counter: Linear Time Tape Counter.
- Protector: Power Fuse, Dew Sensor.
- Heads: 2 Video Rotary Heads, 1 FM Audio Rotary Head, 1 Audio/Control Stationary Head (Mono), 1 Full Track Erase Head.
- Motors: 3 Motors (Tape/Cassette Loading, Cylinder (Direct Drive), Capstan (Direct Drive)).
Usage Features:
- On-Screen Display (OSD): Provides a user-friendly interface for various settings including ATS, Timer Rec Set, Channel Set-up (Auto Tuning, Channel Mapping, Channel Tuning), TV Set-up (On/Off Timer Set, Audio, Picture, Tuning Mode), VCR Set-up (Auto Repeat On/Off, Scene Repeat, System Select), User Registration, System Set-up (Clock Set, Calendar, 12H/24H, Language), G-CODE (or SHOWVIEW or PLUSCODE) No. Entry (Option), Clock, Tape Counter, Sleep Time, CH/AV, Tape Speed, Sound Mute, Control Level (Volume, Brightness, Contrast, Color, Tint, Sharpness), Play/Stop/FF/Rew/Rec/OTR/T-Rec/Pause, Auto Tracking/Manual Tracking, Index, Repeat, Tone 1/2, Stereo.
- Remote Control Unit (RC-CH): Offers comprehensive control over the unit's functions, including Power, Eject, Play, Play/Up, Play/Slow/Up, F.FWD, F.FWD/Right, Rew, Rew/Left, Pause, Pause/Still, Stop, Stop/Down, REC/OTR, ATR/Reveal, Ch/Tr/Page Up/Down, Volume Up/Down, Mute, Menu, Enter/Hold, Cancel/Ch Skip/F/T/B, Set Up/Down/Right/Left, Program, Speed, Text/Mix/TV, Index/Time Text, AD Skip, Zero Return, VIDEO PLUS+ (SHOWVIEW, G-CODE).
- Timer Functions: Built-in 1 Month, 8 Events Programmable Timer. One Touch Recording (Max Time SP Mode: 5 Hours). Sleep Timer (Max 120 Min. in 10 Min. Step). On/Off Timer (1 Program). Wake Up Timer (Programs). Timer backup time of more than 30 minutes at Power Off Mode.
- Terminals: VHF/UHF Antenna, Din Type, F-Type, France Type, Video Input (Front/Rear), Video Output (Rear), Audio Input (Front/Rear), Audio Output (Rear), 21 Pin (x1), AC Inlet, DC Jack 12V (Center +), Ext Speaker, Head Phone.
- Other Features: Auto Head Cleaning, Auto Tracking, Auto Search, CH Auto Set-Up/Auto Clock, VIDEO PLUS+ (SHOWVIEW, G-CODE) (Option), HQ (VHS Standard High Quality), Auto Power On, Auto Play, Auto Rewind, Auto Eject, Auto Repeat System, Forward/Reverse Picture Search, One Touch Playback, Auto CH Memory, Rental Mode, TV Auto Shut off Function, SQPB, CATV, Anti-Theft, T'Text (Fast, Top, Uni), TV Monitor.
Maintenance Features:
- Servicing Notices: Emphasizes safety precautions such as avoiding electric shock, using designated parts, proper wire placement, and careful handling of the cathode-ray tube. It also includes warnings about X-ray emission if high voltage circuits are modified. A safety check procedure is outlined for insulation resistance.
- Service Mode List: Provides a detailed list of service modes accessible via specific button combinations on the main unit and remote control. These modes allow for factory initialization, OSD horizontal adjustment, PG SHIFTER adjustment (automatic and manual), tracking adjustment, display of power-on and play/record hours, checking initial memory IC data, releasing protection password, writing EEPROM initial data, and displaying the adjustment menu.
- Preventive Checks and Service Intervals: A table outlines recommended service intervals (500, 1000, 1500, 2000, 3000 hours) for various parts like Audio Control Head, Full Erase Head, Capstan Belt, Pinch Roller, Capstan DD Unit, Loading Motor, Tension Band, Capstan Shaft, Tape Running Guide Post, and Cylinder Unit. It specifies whether to clean or replace parts.
- Confirmation of Using Hours: Instructions are provided to check total power-on and play/record hours displayed on the screen, which is useful for maintenance scheduling.
- Cleaning Procedures: Detailed instructions for cleaning the Audio Control Head, Tape Running System, and Cylinder Head using isopropyl alcohol and chamois, with warnings against improper cleaning techniques.
- Memory IC Replacement Notes: Step-by-step guide for ensuring correct data settings after replacing the MEMORY IC, including a data table for reference.
- Servicing Fixtures and Tools: A list of specialized tools required for servicing, such as VHS Alignment Tapes (for 2-head 1-speed and 2-head 2-speed models), Torque Gauges, Post Adjustment Screwdriver, Reel Disk Height Adjustment Jig, and Torque Tape.
- Disassembly Instructions: Comprehensive, illustrated guides for disassembling mechanical parts, printed circuit boards (Back Cabinet, CRT PCB, TV/VCR Block, Main PCB, Deck Shield Plate, Jack Plate, Syscon PCB, Deck Chassis), and deck parts (Top Bracket, Flap Lever/Tape Guide R, Tape Guide L, Cassette Holder Ass'y, Cassette Side L/R, Link Ass'y, Loading Motor Ass'y, Sensor Cover L, S Reel/T Reel, Pinch Roller Block/P5-3 Arm Ass'y, A/C Head, FE Head, AHC Ass'y/Cylinder Unit Ass'y, Capstan DD Unit, Middle Gear/Main Cam, Clutch Ass'y, Loading Gear S/T Ass'y, Inclined S/T Ass'y). Instructions for anode cap removal are also included with safety warnings.
- Mechanical Adjustments: Procedures for confirming and adjusting reel disk height, tension post position, playback torque, back tension torque, guide roller, and audio/control head.
- Electrical Adjustments: Detailed steps for various electrical adjustments, including On-Screen Display, RF AGC Delay, VCO Freerun, Constant Voltage, Cut Off, Focus, Sub Brightness (TV/AV), Sub Color (TV/AV), Horizontal Phase, Vertical Size, Vertical Linearity, Vertical Position, OSD Horizontal, and Vertical Linea 60 (AV).
- Block Diagrams and Schematic Diagrams: Provides visual representations of the unit's internal circuitry for TV, Y/C/Audio/Head Amp, Micon/Power/Operation/Deck, T'Text, Main/CRT/Power SW, Operation/Deck, and Syscon.
- Waveforms: Illustrated waveforms at various test points for TV Power, Deflection, CRT, Micon, 21PIN, Chroma/IF, Sound Amp, and T'Text, aiding in troubleshooting.
- Exploded Views: Mechanical and chassis exploded views (top and bottom) with part numbers and grease/oil application points.
- Replacement Parts Lists: Comprehensive lists for mechanical, chassis, and electrical replacement parts, including resistors, diodes, ICs, transistors, coils & transformers, jacks, switches, variable resistors, P.C. board assemblies, and miscellaneous components.
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