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SERVICE MANUAL
Sec. 1: Main Section
I Specifications I Preparation for Servicing I Adjustment Procedures I Schematic Diagrams I CBA's
Sec. 2: Deck Mechanism Section
I Standard Maintenance I Alignment for Mechanism I Disassembly/Assembly of Mechanism I Alignment Procedures of Mechanism
Sec. 3: Exploded views and Parts List Section
I Exploded views I Parts List
VIDEO CASSETTE RECORDER
VR-251
VR-451
PAL
MAIN SECTION
VIDEO CASSETTE RECORDER VR-251/VR-451
Sec. 1: Main Section
I Specifications I Preparation for Servicing I Adjustment Procedures I Schematic Diagrams I CBA's
TABLE OF CONTENTS
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1-1 Important Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2-1 Standard Notes for Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3-1 Preparation for Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4-1 Cabinet Disassembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5-1 Electrical Adjustment Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6-1 Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7-1 Function Indicator Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7-9 Schematic Diagrams / CBA's and Test Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8-1 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9-1 Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10-1 IC Pin Function Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11-1 Lead Identifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-1
SPECIFICATIONS
Description 1. Video 1-1. Video Output (PB) 1-2. Video Output (R/P) 1-3. Video S/N Y (R/P) 1-4. Video Color S/N AM (R/P) 1-5. Video Color S/N PM (R/P) 1-6. Resolution (PB) 2. Servo 2-1. Jitter Low 2-2. Wow & Flutter 3. Normal Audio 3-1. Output (PB) 3-2. Output (R/P) 3-3. S/N (R/P) 3-4. Distortion (R/P) 3-5. Freq. resp (R/P) at 200Hz (-20dB ref. 1kHz) at 6kHz 4. Tuner 4-1. Video output 4-2. Video S/N 4-3. Audio output 4-4. Audio S/N Vp-p dB dB dB 0.8 39 -10 40 1.0 42 -6 46 -2 1.2 E-E Mode E-E Mode E-E Mode E-E Mode dBV dBV dB % dB dB -7 -10 -9 -9 36 -6 -6 41 1.0 -4 -4 4.0 -3 -1.5 SP Mode SP Mode SP Mode SP Mode SP Mode SP Mode µsec % 0.07 0.3 0.12 0.5 SP Mode SP Mode Vp-p Vp-p dB dB dB Line 0.8 0.8 40 37 30 230 1.0 1.0 45 41 36 245 1.2 1.2 SP Mode, W/O Burst SP Mode SP Mode SP Mode FL6A Unit Minimum Nominal Maximum Remark
Note: Nominal specs represent the design specs. All units should be able to approximate these some will exceed and some may drop slightly below these specs. Limit specs represent the absolute worst condition that still might be considered acceptable; In no case should a unit fail to meet limit specs.
1-1-1
HE240SP
IMPORTANT SAFETY PRECAUTIONS
Product Safety Notice
Some electrical and mechanical parts have special safety-related characteristics which are often not evident from visual inspection, nor can the protection they give necessarily be obtained by replacing them with components rated for higher voltage, wattage, etc. Parts that have special safety characteristics are identified by a ! on schematics and in parts lists. Use of a substitute replacement that does not have the same safety characteristics as the recommended replacement part might create shock, fire, and/or other hazards. The Product's Safety is under review continuously and new instructions are issued whenever appropriate. Prior to shipment from the factory, our products are carefully inspected to confirm with the recognized product safety and electrical codes of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the following precautions when a set is being serviced. I. Also check areas surrounding repaired locations. J. Be careful that foreign objects (screws, solder droplets, etc.) do not remain inside the set. K. Crimp type wire connector The power transformer uses crimp type connectors which connect the power cord and the primary side of the transformer. When replacing the transformer, follow these steps carefully and precisely to prevent shock hazards. Replacement procedure 1)Remove the old connector by cutting the wires at a point close to the connector. Important: Do not re-use a connector. (Discard it.) 2)Strip about 15 mm of the insulation from the ends of the wires. If the wires are stranded, twist the strands to avoid frayed conductors. 3)Align the lengths of the wires to be connected. Insert the wires fully into the connector. 4)Use a crimping tool to crimp the metal sleeve at its center. Be sure to crimp fully to the complete closure of the tool. L. When connecting or disconnecting the internal connectors, first, disconnect the AC plug from the AC outlet.
Precautions during Servicing
A. Parts identified by the ! symbol are critical for safety. Replace only with part number specified. B. In addition to safety, other parts and assemblies are specified for conformance with regulations applying to spurious radiation. These must also be replaced only with specified replacements. Examples: RF converters, RF cables, noise blocking capacitors, and noise blocking filters, etc. C. Use specified internal wiring. Note especially: 1)Wires covered with PVC tubing 2)Double insulated wires 3)High voltage leads D. Use specified insulating materials for hazardous live parts. Note especially: 1)Insulation tape 2)PVC tubing 3)Spacers 4)Insulators for transistors E. When replacing AC primary side components (transformers, power cord, etc.), wrap ends of wires securely about the terminals before soldering. F. Observe that the wires do not contact heat producing parts (heatsinks, oxide metal film resistors, fusible resistors, etc.). G. Check that replaced wires do not contact sharp edges or pointed parts. H. When a power cord has been replaced, check that 5 - 6 kg of force in any direction will not loosen it.
1-2-1
H8740SFP
Safety Check after Servicing
Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts, and wires have been returned to their original positions. Afterwards, do the following tests and confirm the specified values to verify compliance with safety standards.
Chassis or Secondary Conductor Primary Circuit Terminals d' d
1. Clearance Distance
When replacing primary circuit components, confirm specified clearance distance (d) and (d') between soldered terminals, and between terminals and surrounding metallic parts. (See Fig. 1) Table 1 : Ratings for selected area AC Line Voltage 230 - 240 V Clearance Distance (d) (d')
Fig. 1
3mm(d) 6 mm(d')
Exposed Accessible Part
Note: This table is unofficial and for reference only. Be sure to confirm the precise values.
2. Leakage Current Test
Confirm the specified (or lower) leakage current between B (earth ground, power cord plug prongs) and externally exposed accessible parts (RF terminals, antenna terminals, video and audio input and output terminals, microphone jacks, earphone jacks, etc.) is lower than or equal to the specified value in the table below. Measuring Method (Power ON) : Insert load Z between B (earth ground, power cord plug prongs) and exposed accessible parts. Use an AC voltmeter to measure across the terminals of load Z. See Fig. 2 and the following table.
Z AC Voltmeter (High Impedance)
B
One side of Power Cord Plug Prongs
Fig. 2
Table 2: Leakage current ratings for selected areas AC Line Voltage Load Z 2k RES. Connected in parallel 50k RES. Connected in parallel Leakage Current (i) i0.7mA AC Peak i2mA DC i0.7mA AC Peak i2mA DC One side of power cord plug prongs (B) to: RF or Antenna terminals A/V Input, Output
230 - 240 V
Note: This table is unofficial and for reference only. Be sure to confirm the precise values.
1-2-2
H8740SFP
STANDARD NOTES FOR SERVICING
Circuit Board Indications
a. The output pin of the 3 pin Regulator ICs is indicated as shown.
How to Remove / Install Flat Pack-IC
1. Removal
With Hot-Air Flat Pack-IC Desoldering Machine:. (1) Prepare the hot-air flat pack-IC desoldering machine, then apply hot air to the Flat Pack-IC (about 5 to 6 seconds). (Fig. S-1-1)
Top View Out In Input
Bottom View
b. For other ICs, pin 1 and every fifth pin are indicated as shown.
5 Pin 1
Fig. S-1-1
10
(2) Remove the flat pack-IC with tweezers while applying the hot air. (3) Bottom of the flat pack-IC is fixed with glue to the CBA; when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat up. Then remove (glue will be melted). (Fig. S-1-6) (4) Release the flat pack-IC from the CBA using tweezers. (Fig. S-1-6)
c. The 1st pin of every male connector is indicated as shown.
Pin 1
Caution:
Instructions for Connectors
1. When you connect or disconnect the FFC (Flexible Foil Connector) cable, be sure to first disconnect the AC cord. 2. FFC (Flexible Foil Connector) cable should be inserted parallel into the connector, not at an angle.
1. Do not supply hot air to the chip parts around the flat pack-IC for over 6 seconds because damage to the chip parts may occur. Put masking tape around the flat pack-IC to protect other parts from damage. (Fig. S-1-2) 2. The flat pack-IC on the CBA is affixed with glue, so be careful not to break or damage the foil of each pin or the solder lands under the IC when removing it.
Hot-air Flat Pack-IC Desoldering Machine CBA
FFC Cable
Connector CBA
* Be careful to avoid a short circuit.
Masking Tape Tweezers
Flat Pack-IC
Fig. S-1-2
1-3-1
NOTE_1
With Soldering Iron: (1) Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use solder flux which is applied to all pins of the flat pack-IC, you can remove it easily. (Fig. S-1-3)
(4) Bottom of the flat pack-IC is fixed with glue to the CBA; when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat up. Then remove (glue will be melted). (Fig. S-1-6) (5) Release the flat pack-IC from the CBA using tweezers. (Fig. S-1-6) Note: When using a soldering iron, care must be taken to ensure that the flat pack-IC is not being held by glue. When the flat pack-IC is removed from the CBA, handle it gently because it may be damaged if force is applied.
Flat Pack-IC
Desoldering Braid
Soldering Iron
Fig. S-1-3 (2) Lift each lead of the flat pack-IC upward one by one, using a sharp pin or wire to which solder will not adhere (iron wire). When heating the pins, use a fine tip soldering iron or a hot air desoldering machine. (Fig. S-1-4)
Hot Air Blower
or
Iron Wire
Soldering Iron To Solid Mounting Point
Fig. S-1-5
Sharp Pin Fine Tip Soldering Iron
Fig. S-1-4 (3) Bottom of the flat pack-IC is fixed with glue to the CBA; when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat up. Then remove (glue will be melted). (Fig. S-1-6) (4) Release the flat pack-IC from the CBA using tweezers. (Fig. S-1-6) With Iron Wire: (1) Using desoldering braid, remove the solder from all pins of the flat pack-IC. When you use solder flux which is applied to all pins of the flat pack-IC, you can remove it easily. (Fig. S-1-3) (2) Affix the wire to a workbench or solid mounting point, as shown in Fig. S-1-5. (3) While heating the pins using a fine tip soldering iron or hot air blower, pull up the wire as the solder melts so as to lift the IC leads from the CBA contact pads as shown in Fig. S-1-5
Flat Pack-IC Tweezers
CBA
Fine Tip Soldering Iron
Fig. S-1-6
1-3-2
NOTE_1
2. Installation
(1) Using desoldering braid, remove the solder from the foil of each pin of the flat pack-IC on the CBA so you can install a replacement flat pack-IC more easily. (2) The " I " mark on the flat pack-IC indicates pin 1. (See Fig. S-1-7.) Be sure this mark matches the 1 on the PCB when positioning for installation. Then presolder the four corners of the flat pack-IC. (See Fig. S-1-8.) (3) Solder all pins of the flat pack-IC. Be sure that none of the pins have solder bridges.
Instructions for Handling Semi-conductors
Electrostatic breakdown of the semi-conductors may occur due to a potential difference caused by electrostatic charge during unpacking or repair work.
1. Ground for Human Body
Be sure to wear a grounding band (1M) that is properly grounded to remove any static electricity that may be charged on the body.
2. Ground for Workbench
Be sure to place a conductive sheet or copper plate with proper grounding (1M) on the workbench or other surface, where the semi-conductors are to be placed. Because the static electricity charge on clothing will not escape through the body grounding band, be careful to avoid contacting semi-conductors with your clothing. < Incorrect >
Example :
Pin 1 of the Flat Pack-IC is indicated by a " " mark.
Fig. S-1-7
Presolder
CBA
Flat Pack-IC CBA
Fig. S-1-8
< Correct >
Grounding Band
1M
CBA
1M Conductive Sheet or Copper Plate
1-3-3
NOTE_1
PREPARATION FOR SERVICING
How to Enter the Service Mode
About Optical Sensors Caution: An optical sensor system is used for the Tape Start and End Sensors on this equipment. Carefully read and follow the instructions below. Otherwise the unit may operate erratically. What to do for preparation Insert a tape into the Deck Mechanism Assembly and press the PLAY button. The tape will be loaded into the Deck Mechanism Assembly. Make sure the power is on, connect TP507 (SENSOR INHIBITION) to GND. This will stop the function of Tape Start Sensor, Tape End Sensor and Reel Sensors. (If these TPs are connected before plugging in the unit, the function of the sensors will stay valid.) See Fig. 1. Note: Because the Tape End Sensors are inactive, do not run a tape all the way to the start or the end of the tape to avoid tape damage.
Q505
Q504 TP507 S-INH
Fig. 1
1-4-1
HE470PFS
CABINET DISASSEMBLY INSTRUCTIONS
1. Disassembly Flowchart
This flowchart indicates the disassembly steps to gain access to item(s) to be serviced. When reassembling, follow the steps in reverse order. Bend, route, and dress the cables as they were originally.
[1] Top Case [2] Front Assembly [3] VCR Chassis Unit [4] Jack CBA [5] Deck Assembly [6] Main CBA [7] Cylinder Shield
(1): Identification (location) No. of parts in the figures (2): Name of the part (3): Figure Number for reference (4): Identification of parts to be removed, unhooked, unlocked, released, unplugged, unclamped, or desoldered. P=Spring, L=Locking Tab, S=Screw, CN=Connector *=Unhook, Unlock, Release, Unplug, or Desolder e.g. 2(S-2) = two Screws (S-2), 2(L-2) = two Locking Tabs (L-2) (5): Refer to "Reference Notes."
Reference Notes
CAUTION: Locking Tabs (L-1) and (L-2) are fragile. Be careful not to break them. 1. Remove five Screws (S-2), two Screws (S-3) and Screw (S-4). Then, slowly lift the VCR Chassis Unit (Deck Assembly, Jack CBA and Main CBA) up. 2. When reassembling, solder wire jumpers as shown in Fig. 5. 3. Before installing the Deck Assembly, be sure to place the pin of LD-SW on Main CBA as shown in Fig. 6. Then, install the Deck Assembly while aligning the hole of Cam Gear with the pin of LD-SW, the shaft of Cam Gear with the hole of LD-SW as shown in Fig. 6.
2. Disassembly Method
REMOVAL ID/ LOC. No. [1] [2] PART REMOVE/*UNHOOK/ Fig. UNLOCK/RELEASE/ Note No. UNPLUG/DESOLDER 1 2 7(S-1) *3(L-1),*4(L-2) -
(S-1) (S-1)
Top Case Front Assembly VCR Chassis Unit Jack CBA Deck Assembly Main CBA Cylinder Shield
[3] [4] [5] [6] [7]
3 4 5,6 5 5
5(S-2), 2(S-3), (S-4), Desolder, (S-5) 2(S-6), Desolder ---------2(S-7)
1
[1] Top Case
2,3 (S-1)
(1)
(2)
(3)
(4)
(5) Fig. 1
1-5-1
HE240DC
(L-2)
(L-2)
[4] Jack CBA (S-5) Desolder
[2] Front Assembly (L-1)
Fig. 2 Fig. 4
(S-2) [3]VCR Chassis Unit
(S-2) (S-3)
(S-2) (S-4) (S-3) (S-2)
Fig. 3
1-5-2
HE240DC
[7] Cylinder Shield Cylinder Assembly FE Head (S-7) AC Head Assembly SW507 LD-SW Pin
[6] Main CBA [5] Deck Assembly [5] Deck Assembly Cam Gear [6] Main CBA (S-6) Shaft Hole LD-SW (S-6) Pin [6] Main CBA Hole
Fig. 6
TOP VIEW From FE Head From Cylinder Assembly From AC Head Assembly From Capstan Motor Assembly Lead with blue stripe
Lead with blue stripe
Lead with blue stripe Desolder from bottom
Printing side
Lead connections of Deck Assembly and Main CBA
Fig. 5
1-5-3
HE240DC
ELECTRICAL ADJUSTMENT INSTRUCTIONS
General Note: "CBA" is an abbreviation for "Circuit Board Assembly." NOTE: 1.Electrical adjustments are required after replacing circuit components and certain mechanical parts. It is important to do these adjustments only after all repairs and replacements have been completed. Also, do not attempt these adjustments unless the proper equipment is available. 2.To perform these alignment / confirmation procedures, make sure that the tracking control is set in the center position: Press either "L5? " or "K" button on the remote control unit first, then the "PLAY" button (Front Panel only).
Head Switching Position Adjustment
Purpose: To determine the Head Switching point during playback. Symptom of Misadjustment: May cause Head Switching noise or vertical jitter in the picture. Test point Adj.Point Mode PLAY (SP) Input -----
VR501 J23(V-OUT) TP502(RF-SW) (Switching Point) (MAIN CBA) GND Tape FL6A Measurement Equipment Oscilloscope
Test Equipment Required
1.Oscilloscope: Dual-trace with 10:1 probe, V-Range: 0.001~50V/Div., F-Range: DC~AC-20MHz 2.Alignment Tape (FL6A)
Spec. 6.5H±1H (416.0µs±60µs)
Connections of Measurement Equipment
Oscilloscope Main CBA J23 GND TP502 CH1 CH2 Trig. (+)
Figure 1
EXT. Syncronize Trigger Point
CH1 1.0H CH2 6.5H 0.5H V-Sync
Switching Pulse
Reference Notes: Playback the Alignment tape and adjust VR501 so that the V-sync front edge of the CH1 video output waveform is at the 6.5H(416.0µs) delayed position from the rising edge of the CH2 head switching pulse waveform.
1-6-1
HE240EA
Servo/System Control Block Diagram
Comparison Chart of Models & Marks
Model VR-251 VR-451 Mark A B
BLOCK DIAGRAMS
MAIN CBA
AL+5V SW507 LD-SW
IC501 (SERVO/SYSTEM CONTROL) KEY SWITCH TP507 SENS-INH KEY SWITCH +5V
D502 S-LED AL+5V 9 95 94 10 4 80 79
KEY- 1 7 KEY- 2 8 LD-SW CTL(+) CTL(-) ST-S END-S T-REEL S-REEL POWER-LED 23
Q504 ST-S
D561 STAND-BY
SENSOR CBA
TP506 END-S Q505 END-S Q503 T-REEL PS503 S-REEL TIMER+5V
Q562
D562 POWER
RESET Q501 SW508 RESET
34 RESET
Q563
D563 CAS
CAS-LED 24
Q564
D564 TIMER
SENSOR CBA
TP501 TIMER-LED 25
97 CTL AMP OUT
(DECK ASSEMBLY)
B
CL287 CONTROL HEAD
CTL
Q565
D565 REC
REC-LED 26
Q502 84 FF/REW-L 3 12 5 11
5 6
CTL(+) CTL(-)
CL504 5 6
AC HEAD ASSEMBLY
AL+5V VR501 SW-POINT
TU701(TUNER UNIT) SDA SDA SCL SCL
AL+5V SW506 RECSAFETY
2 PG-DELAY 31 RECREMOCON-IN 14 SAF-SW
RS501 REMOTE SENSOR
IC503 (MEMORY)
5 SDA 6 SCL
CYLINDER ASSEMBLY
CAPSTAN MOTOR
CL502 P-ON+15V AL+12V(2) GND D-PFG D-CONT LM-FWD/REV GND C-CONT C-F/R C-FG P-ON+5V AL+12V/+20.5V FROM/TO POWER SUPPLY BLOCK
PG SENSOR
AUDIO-SW-1 29 AUDIO-SW-2 30 P-ON+15V AL+12V
90 D-PFG 77 D-CONT 81 LMFWD/REV 76 C-CONT 78 C-F/R 87 C-FG
AUDIO-SW-1 AUDIO-SW-2 IIC-BUS SDA IIC-BUS SCL A-MUTE-H IIC-BUS SDA IIC-BUS SCL D-REC-H RF-SW C-ROTA D-V SYNC H-A-SW H-A-COMP V-ENV C-SYNC FROM/TO VIDEO BLOCK TO AUDIO BLOCK
CAPSTAN MOTOR
M
DRUM MOTOR
M
LOADING MOTOR
M
12 11 10 9 8 7 6 5 4 3 2 1
A-MUTE-H 83 IIC-BUS SDA IIC-BUS SCL D-REC-H RF-SW C-ROTA
72 71 33 18 15 D-V SYNC 13
P-ON+5V AL+12V/+20.5V C-POW-SW P-ON-H P-DOWN-L P-OFF-H
66 67 86 73
B C-POW-SW P-ON-H P-DOWN-L P-OFF-H
H-A-SW 16 H-A-COMP 17 V-ENV 6 C-SYNC 58
1-7-1
1-7-2
HE220BLS
Video Block Diagram
Comparison Chart of Models & Marks
Model VR-251 VR-451 Mark A B
REC-VIDEO SIGNAL
PB-VIDEO SIGNAL
MODE: SP/REC
MAIN CBA
IC501 (OSD)
FROM SERVO/SYSTEM CONTROL BLOCK
50
IIC-BUS SDA IIC-BUS SCL
52
OSD CHARACTER MIX
Q351 BUFFER
IC301 (Y/C SIGNAL PROCESS)
65
43
46
68 69
78
79
Y. DELAY
SERIAL DECORDER
CL253 V(R)-1 V-COM V(L)-1 V(L)-2 V-COM V(R)-2 B
(DECK ASSEMBLY)
CYLINDER ASSEMBLY
1 2 3 4 5 6
TU701(TUNER UNIT) VIDEO-IN 6 VIDEO-OUT 24
48 50 52 56
TUNER IN1 IN2
LUMINANCE SIGNAL PROCESS
BYPASS AGC
R
P
SP EP
SP HEAD AMP
96 95 93 94
VIDEO (R)-1 HEAD VIDEO (L)-1 HEAD VIDEO (L)-2 HEAD VIDEO (R)-2 HEAD
IN2 PB/EE MUTE TUNER IN1 PB/EE MUTE
CHARA. INS. 1/2
CCD 1H DELAY
Y
+
C
REC FM AGC
EP HEAD AMP
90 89 88 87
WF1 TP502 RF-SW
CHROMINANCE SIGNAL PROCESS FBC
D-REC-H 80
R PR P
JACK CBA
WF3 J23 V-OUT
Y/C MIX
P
C-ROTA/RF-SW 70 D-V-SYNC 62 H-A-SW 71 B H-A-COMP 83 V-ENV 84 C-SYNC 67
D-REC-H RF-SW C-ROTA D-V-SYNC H-A-SW H-A-COMP V-ENV C-SYNC
FROM/TO SERVO/SYSTEM CONTROL BLOCK
JK101 Q101 CL101 1 BUFFER V-OUT1 19 3 20 V-IN1 JK102 Q102 CL102 1 BUFFER 3
CL151
V-OUT1 V-IN1 1 3 61 63
R
AGC
VXO
CL152
V-OUT2 V-IN2 1 3
58
59
28
29
21
V-OUT2 19 20 V-IN2
X301 4.433619MHz
TP301 C-PB WF2
1-7-3
1-7-4
HE220BLV
Audio Block Diagram
PB-AUDIO SIGNAL JACK CBA
JK101 A-IN1 A-IN1 A-OUT1 A-OUT1
2 6 1 3 TU701(TUNER UNIT) AUDIO 2 TU-AUDIO 21
REC-AUDIO SIGNAL
Mode : SP/REC
MAIN CBA
CL101 8 6
A-IN1 A-OUT1
CL151 8 6
IC151 (SWITCHING) PB/EE PB/EE 3 PB/EE IN2 TUNER PB/EE IN1 IN1 SW CTL IC301 (AUDIO SIGNAL PROCESS) TUNER 13 IN1 15 IN2 17 PB-ON 5 6 EQ AMP SP/LP-ON +5V 7 REC-ON 8 9 INV R ATT P
JK102 A-IN2 A-IN2 A-OUT2 A-OUT2
2 6 1 3
CL102 8 6
A-IN2 A-OUT2
CL152 8 6
Q151
BUFFER
1 5 2 4 12 14 15 11 10 9 AUDIO-SW-1 AUDIO-SW-2 TO SERVO/SYSTEM CONTROL BLOCK
Q152
BUFFER
13
ALC DET ALC LINE AMP MUTE
12 11
(DECK ASSEMBLY)
ACE HEAD ASSEMBLY
AUDIO HEAD AUDIO ERASE HEAD CL287 A-PB/REC A-COM AE-H AE-H/FE-H 4 3 1 2 4 3 1 2 CL504 A-PB/REC A-COM AE-H AE-H/FE-H Q401 Q402 BIAS OSC 1 2 Q406
AUTO BIAS
3
100
REC AMP
FE HEAD
FULL ERASE HEAD CL501 2 FE-H 1 FE-H-GND
Q403 (SWITCHING) +5V Q405 (PB=ON)
AUDIO HD-SW CONTROL 16
SERIAL DECODER
68 69
71 A-MUTE-H IIC-BUS SDA IIC-BUS SCL TO SERVO/SYSTEM CONTROL BLOCK
1-7-5
1-7-6
HE220BLA
Power Supply Block Diagram
NOTE : The voltage for parts in hot circuit is measured using hot GND as a common terminal. CAUTION FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE T1.6AL/250V FUSE. CAUTION ! Fixed voltage (or Auto voltage selectable ) power supply circuit is used in this unit. If Main Fuse (F001) is blown, check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components in the power supply circuit to fail.
MAIN CBA
HOT CIRCUIT. BE CAREFUL.
F001 T1.6A L 250V AC001
L003 LINE FILTER
D001 - D004 BRIDGE RECTIFIER
2
T001 Q051
12
Q052
13
4
14
Q057 Q058 Q055
Q001
15
P-ON+15V P-ON+32V P-ON-H AL+12V/+20.5V AL+12V C-POW-SW AL+5V TIMER+5V P-ON+5V AL-5V P-DOWN-L P-OFF-H Q054
16
Q059
Q002
11
7
17
6
18
Q056 IC001 ERROR VOLTAGE DET
4 1
Q003
HOT
3
2
REG Q004 (SHUNT REGULATOR)
COLD
1-7-8 HE220BLP
1-7-7
FUNCTION INDICATOR SYMBOLS
Note: The following symbols will appear on the indicator panel to indicate the current mode or operation of the VCR. On-screen modes will also be momentarily displayed on the tv screen when you press the operation buttons.
Display panel
STAND
BY
FUNCTION
TAPE IN
TIMER
REC
" H "= LED Light on, " L "= LED Light off Led Mode STANDBY FUNCTION TAPE IN 1. When reel and capstan mechanism is not functioning correctly 2. When tape loading mechanism is not functioning correctly 3. When cassette loading mechanism is not functioning correctly 4. When the drum is not working properly TIMER Power on = " H " Power off = " L " VCR mode = " H " TV mode = " L " Cassette in = " H " Cassette out = " L " Cassette in Cassette in Cassette in Cassette in Timer stand by = " H " One touch recording = " H " Timer recording = " H " General mode = " L " REC mode = " H " REC pause General mode = " L " Blinks at 0.8Hz interval Indicator Active
Blinks at 0.8Hz interval Blinks at 1.6Hz interval Blinks at 3.2Hz interval Blinks at 6.4Hz interval
REC
1-7-9
HE220FIS
SCHEMATIC DIAGRAMS / CBA'S AND TEST POINTS
Standard Notes WARNING
Many electrical and mechanical parts in this chassis have special characteristics. These characteristics often pass unnoticed and the protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts that have these special safety characteristics are identified in this manual and its supplements; electrical components having such features are identified by the mark " ! " in the schematic diagram and the parts list. Before replacing any of these components, read the parts list in this manual carefully. The use of substitute replacement parts that do not have the same safety characteristics as specified in the parts list may create shock, fire, or other hazards.
Notes:
1. Do not use the part number shown on these drawings for ordering. The correct part number is shown in the parts list, and may be slightly different or amended since these drawings were prepared. 2. All resistance values are indicated in ohms (K=103, M=106). 3. Resistor wattages are 1/4W or 1/6W unless otherwise specified. 4. All capacitance values are indicated in µF (P=10-6 µF). 5. All voltages are DC voltages unless otherwise specified. 6. Electrical parts such as capacitors, connectors, diodes, IC's, transistors, resistors, switches, and fuses are identified by four digits. The first two digits are not shown for each component. In each block of the diagram, there is a note such as shown below to indicate these abbreviated two digits.
Capacitor Temperature Markings
Mark (B) (F) (SR) (Z) Capacity change rate Standard temperature 20°C 20°C 20°C 20°C Temperature range -25~+85°C -25~+85°C -25~+85°C -10~+70°C
±10%
+30 - 80%
±15%
+30 - 80%
Capacitors and transistors are represented by the following symbols.
CBA Symbols
(Top View) (Bottom View) + Electrolytic Capacitor
Schematic Diagram Symbols
Digital Transistor
(Bottom View)
Transistor or Digital Transistor
E C B (Top View)
(Top View)
NPN Transistor
ECB ECB
PNP Transistor
(Top View)
(Top View)
NPN Digital Transistor
ECB ECB
PNP Digital Transistor
1-8-1
SCPA1
LIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ON THE FOLLOWING PAGES: 1. CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE FUSE. 2. CAUTION: Fixed Voltage (or Auto voltage selectable) power supply circuit is used in this unit. If Main Fuse (F001) is blown, first check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components in the power supply circuit to fail. 3. Note: (1) Do not use the part number shown on the drawings for ordering. The correct part number is shown in the parts list, and may be slightly different or amended since the drawings were prepared. (2) To maintain original function and reliability of repaired units, use only original replacement parts which are listed with their part numbers in the parts list section of the service manual. 4. Wire Connectors (1) Prefix symbol "CN" means "connector" (can disconnect and reconnect). (2) Prefix symbol "CL" means "wire-solder holes of the PCB" (wire is soldered directly). 5. Mode: SP/REC 6. Voltage indications for PLAY and REC modes on the schematics are as shown below:
Unit: Volts
1 5.0
2
3 5.0 (2.5)
PLAY mode REC mode
The same voltage for both PLAY & REC modes
Indicates that the voltage is not consistent here.
7. How to read converged lines
1-D3 Distinction Area Line Number (1 to 3 digits) Examples: 1. "1-D3" means that line number "1" goes to area "D3". 2. "1-B1" means that line number "1" goes to area "B1".
3 AREA D3 2 1 A
1-B1
AREA B1 1-D3 B C D
8. Test Point Information
: Indicates a test point with a jumper wire across a hole in the PCB. : Used to indicate a test point with a component lead on foil side. : Used to indicate a test point with no test pin. : Used to indicate a test point with a test pin.
1-8-2
SCRK05
Main 1/5 Schematic Diagram
Comparison Chart of Models and Marks
MODEL VR-251 VR-451 MARK A B
1-8-3
1-8-4
HE220SCM1
Main 2/5& Sensor Schematic Diagram
1-8-5
1-8-6
HE220SCM2
Main 3/5 Schematic Diagram
Comparison Chart of Models and Marks
MODEL VR-251 VR-451 MARK A B
1-8-7
1-8-8
HE220SCM3
Main 4/5 & Jack Schematic Diagram
1-8-9
1-8-10
HE220SCM4
Main 5/5 Schematic Diagram
CAUTION ! For continued protection against fire hazard, replace only with the same type fuse. NOTE : The voltage for parts in hot circuit is measured using hot GND as a common terminal. CAUTION ! Fixed voltage ( or Auto voltage selectable ) power supply circuit is used in this unit. If Main Fuse (F001) is blown, check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components in the power supply circuit to fail.
1-8-11
1-8-12
HE220SCM5
Main CBA Top View
CAUTION ! For continued protection against fire hazard, replace only with the same type fuse. NOTE : The voltage for parts in hot circuit is measured using hot GND as a common terminal. CAUTION ! Fixed voltage ( or Auto voltage selectable ) power supply circuit is used in this unit. If Main Fuse (F001) is blown, check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components in the power supply circuit to fail. BECAUSE A HOT CHASSIS GROUND IS PRESENT IN THE POWER SUPPLY CIRCUIT , AN ISOLATION TRANSFORMER MUST BE USED. ALSO , IN ORDER TO HAVE THE ABILITY TO INCREASE THE INPUT SLOWLY , WHEN TROUBLESHOOTING THIS TYPE POWER SUPPLY CIRCUIT , A VARIABLE ISOLATION TRANSFORMER IS REQUIRED.
Sensor CBA Top View
BHB300F01014-A
BHB300F01014-B
WF1 J23 V-OUT
TP507 S-INH VR501 SW-P WF2 TP502 RF-SW TP501 CTL WF3 TP301 C-PB
1-8-13
1-8-14
BHE470F01014-A
Main CBA Bottom View
CAUTION ! For continued protection against fire hazard, replace only with the same type fuse. NOTE : The voltage for parts in hot circuit is measured using hot GND as a common terminal. CAUTION ! Fixed voltage ( or Auto voltage selectable ) power supply circuit is used in this unit. If Main Fuse (F001) is blown, check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components in the power supply circuit to fail. BECAUSE A HOT CHASSIS GROUND IS PRESENT IN THE POWER SUPPLY CIRCUIT , AN ISOLATION TRANSFORMER MUST BE USED. ALSO , IN ORDER TO HAVE THE ABILITY TO INCREASE THE INPUT SLOWLY , WHEN TROUBLESHOOTING THIS TYPE POWER SUPPLY CIRCUIT , A VARIABLE ISOLATION TRANSFORMER IS REQUIRED.
1-8-15
1-8-16
BHE470F01014-A
Jack CBA Top View
Jack CBA Bottom View
BHE470F01014-C
1-8-17
1-8-18
WAVEFORMS
WF2 UPPER
(TP301 of Main CBA) of Main CBA)
WF1 LOWER (TP502
C-PB RF-SW
10mV x 10 0.5V x 10 5msec
WF3 UPPER
(J23 of Main CBA) of Main CBA)
WF1 LOWER (TP502
V-OUT RF-SW
0.1V x 10 0.5V x 10 50usec
WF3
(J23 of Main CBA)
V-OUT E-E 10usec
50mV x 10
1-9-1
U27WFPAL
WIRING DIAGRAM
Comparison Chart of Models & Marks
Model VR-251 VR-451 Mark A B
SENSOR CBA (BHB300F01014)
AC CORD ANT-IN ANT-OUT
SENSOR CBA (BHB300F01014)
(DECK ASSEMBLY)
AC HEAD ASSEMBLY
AUDIO ERASE HEAD AUDIO HEAD CONTROL HEAD CL287 AE-H AE-H/FE-H A-COM A-PB/REC CTL(+) CTL(-) CL504 AE-H AE-H/FE-H A-COM A-PB/REC CTL(+) CTL(-) CL151 1 2 3 4 5 6 7 8 JW002 V-OUT1 GND V-IN1 AL+12V(1) NU A-OUT1 JK1-8P-OUT A-IN1 CL101 1 2 3 4 5 6 7 8
1 2 3 4 5 6
1 2 3 4 5 6
JK101, JK102
1 3 5 7 2 4 6 8 10 12 14 16 18 20
FE HEAD
FULL ERASE HEAD
CL501 2 FE-H 1 FE-H GND
JACK CBA (BHE470F01014C)
9 11 13 15 17 19 21
LOADING MOTOR
M
CAPSTAN MOTOR
1 2 3 4 5 6 7 8 9 10 11 12
CYLINDER ASSEMBLY
PG SENSOR
M
CAPSTAN MOTOR
DRUM MOTOR
M
CL502 AL+12V/+20.5V P-ON+5V C-FG C-F/R C-CONT GND LM-FWD/REV D-CONT D-PFG GND AL+12V(2) P-ON+15V
MAIN CBA (BHE470F01014A)
CL152 1 2 3 4 5 6 7 8
JW001 V-OUT2 GND V-IN2 NU GND A-OUT2 SC2-IN A-IN2
CL102 1 2 3 4 5 6 7 8
VIDEO (R)1 HEAD VIDEO (L)1 HEAD VIDEO (L)2 HEAD VIDEO (R)2 HEAD CL253 V(R)-1 V-COM V(L)-1 V(L)-2 V-COM V(R)-2
1 2 3 4 5 6
B
1-10-1
1-10-2
HE220WI
IC PIN FUNCTION DESCRIPTIONS
Comparison Chart of Models and Marks
Model VR-251 VR-451 Mark A B 18 17 Pin IN/ Mark No. OUT A B IN Signal Name N.U. H-ACOMP Function Not Used Head Amp Comparator Signal Active Level H/L H/L H/L H H H
IC501( SERVO / SYSTEM CONTROL IC )
Pin IN/ Mark No. OUT 1 IN Signal Name SC2-IN PGDELAY POWSAF END-S AFC "H" 4.5V, "L" 1.0V Active Function Level Input Signal from Pin 8 of SCART2 Video Head Switching Pulse Signal Adjusted Voltage P-ON Power Detection Input Signal Tape End Position Detect Signal Automatic Frequency Control Signal Video Envelope Comparator Signal Key Scan Input Signal 1 Key Scan Input Signal 2 Deck Mode Position Detector Signal Tape Start Position Detector Signal Not Used Not Used Dummy V-sync Output A/D
OUT RF-SW Video Head Switching Pulse OUT N.U. N.U. TUSW-1 N.U. Not Used Not Used Tuner System Control Signal Output Not Used "POWER" LED Signal Output "CASSETTE" LED Signal Output
19 20 21 22
2
IN
A/D
23 24 25 26
OUT POWE R-LED OUT CASLED
3 4 5
IN IN IN
A/D A/D A/D
TIMER- "TIMER" LED OUT LED Signal Output OUT RECLED N.U. N.U. Recording LED Control Signal Not Used Not Used
27 A/D A/D 30 A/D A/D 31 28 29
H/L H/L
6 7 8 9
IN IN IN IN
V-ENV KEY-1 KEY-2 LD-SW
Audio IN/OUT OUT AUDIO- Control Signal SW-1 Audio IN/OUT OUT AUDIOControl Signal SW-2 RECSAFSW N.U. Recording Safety SW Detect (With Record tab="L"/ With out Record tab="H") Not Used
IN
H
10 11 12 13 14
OUT ST-S N.U. N.U.
A/D H/Hi-z L
32 33 34 35 36 37
-
L L -
OUT D-REC- Delayed Record H Signal IN IN RESET System Reset Signal (Reset="L") XC-IN Sub Clock Sub Clock Vcc Main Clock Input Main Clock Input Vss(GND) Not Used Not Used
OUT D-VSYNC IN
REMOC Remote ON-IN Control Sensor
OUT XCOUT IN Vcc X-IN Vss N.U. N.U.
15 A 16 B
Color Phase OUT C-ROTA Rotary Changeover SIgnal N.U. Not Used OUT H-A-SW Video Head Amp Switching Pulse
H/L H/L
38 39 40 41 42
OUT X-OUT
1-11-1
HE220PIN
Pin IN/ Mark No. OUT 43 44 45 46 47 48 49 50 51 52 53 54 IN IN
Signal Name
Function
Active Level L -
Pin IN/ Mark No. OUT 71
Signal Name
Function I2C BUS Control Clock I2C BUS Control Data
Active Level H/L
CLKSE Clock Select L (GND) OSCIN Clock Input for letter size
I 2C OUT BUSSCL
2 IN/ I C OUT BUSSDA
OUT OSCOU Clock Output for T letter size IN IN NUB LP Not Used LP
72 73 74 75 76 77
H/L L PWM PWM
OUT P-OFF- Power Off at High H N.U. N.U. Not Used Not Used Capstan Motor Control Signal Drum Motor Control Signal Capstan Motor FWD/REV Control Signal (FWD="L"/ REV="H")
FSC-IN [4.43MH 4.43MHz Clock Input z] OSDVs OSDVss s OSD-V- OSD Video Signal IN Input N.U. Not Used
OUT CCONT OUT DCONT
L L 79 80 81 82 PULSE 84 H/L H/L H 92 87 88 89 90 91 86 85 83 A B 78
OUT OSD-V- OSD Video Signal OUT Output OSDVc OSDVcc c HLF LPF Connected Terminal (Slicer) SECAM or MESECAM Chroma Video Input Signal at Super Impose Not Used Not Used Composite Synchronized Pulse
OUT C-F/R
H/L
IN IN
S-REEL Supply Reel Rotation Signal T-REEL Take Up Reel Rotation Signal Loading Motor Control Signal Not Used Audio Mute Control Signal (Mute = "H") Not Used CTL Frequency Characteristics Switching Signal (FF/REW="L") Not Used
PULSE PULSE H/L/ Hi-z H L L
55
IN
COLO R-IN N.U. N.U. CSYNC
Z/L
LMOUT FWD/ REV N.U.
56 57 58
IN
AOUT MUTEH N.U.
59 60 61 62 63 64 65 66 67 68 69 70
SCART 1 8Pin OUT 8POUT- Output Control 1 Signal N.U. N.U. N.U. N.U. N.U. N.U. Not Used Not Used Not Used Not Used Not Used Not Used Capstan Power Switching Signal
OUT FF/ REW-L IN N.U.
PPower Voltage DOWN- Down Detector L Signal C-FG N.U. N.U. D-PFG Capstan Motor Rotation Detection Pulse Not Used Not Used
IN IN -
PULSE -
COUT POWE R-SW IN -
Power On Signal P-ON-H at High N.U. N.U. N.U. Not Used Not Used Not Used
Drum Motor Phase/Frequency PULSE Generator -
AMPVR V-Ref for CTL EF OUT AMP AMPVR V-Ref for CTL AMP EFIN
1-11-2
HE220PIN
Pin IN/ Mark No. OUT 93 94 95 96 97 98 -
Signal Name P80/C
Function P80/C Terminal Playback/Record Control Signal (-)
Active Level H/L H/L -
OUT CTL (-)
OUT CTL (+) Playback/Record Control Signal (+) AMPC CTL AMP Connected Terminal
CTLAM To Monitor for PULSE Pout CTL AMP Output AMPVc AMPVcc c AVcc A/D Converter Power Input/ Standard Voltage Input Tuner IF Output Signal -
99 10 0
-
-
IN
AGC
A/D
Notes: Abbreviation for Active Level: PWM -----Pulse Wide Modulation A/D--------Analog - Digital Converter
1-11-3
HE220PIN
LEAD IDENTIFICATIONS
BN1L4M-T BN1F4M-T BA1F4M-T KTA1266(GR) KTC3199(Y,GR,BL) 2SC2785(J.H.F.K) KRA103M KRC103M KRA104M KTA1281(Y) 2SC1815-BL(TPE2) 2SC1815-Y(TPE2) 2SC1815-GR(TPE2) 2SC2120-Y(TPE2) KTC3203(Y) 2SC1815-BL(TPE2) 2SA1020(Y) 2SA1015-GR(TPE2)
E C B
E C B PT204-6B-12 MID-32A22F
CAT24WC02JI BR24C02F-W
LTV-817(B.C)-F EL817(A,B,C)
8
5
A
C
K 1 4
E C E
RN1511(TE85R) FMG4A T148 C1 C2
KTA1504GR-RTK KTA1504Y-RTK KTC3875Y-RTK
16
CD4052BCSJX BU4052BCF-E2 TC4052BF(EL) 9
C
B1 E B2 B E
1 8
LA71750EM-MPB-E QSZAC0RMB151 80 81 51 50 Note: A: Anode K: Cathode E: Emitter C: Collector B: Base R: Reference S: Source G: Gate D: Drain
100 1 30
31
1-12-1
HE220LE
DECK MECHANISM SECTION
VIDEO CASSETTE RECORDER VR-251/VR-451
Sec. 2: Deck Mechanism Section
I Standard Maintenance I Alignment for Mechanism I Disassembly/Assembly of Mechanism I Alignment Procedures of Mechanism
TABLE OF CONTENTS
Standard Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1-1 Service Fixtures and Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2-1 Mechanical Alignment Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3-1 Disassembly / Assembly Procedures of Deck Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4-1 Alignment Procedures of Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4-8
STANDARD MAINTENANCE
Service Schedule of Components
H: Hours Deck Ref.No. B2 B3 B8 B587 B31 B573,B574 B37 B52 *B73 *B86 B133 B410 B414 B416 B525 Part Name Cylinder Assembly Loading Motor Assembly Pulley Assembly Tension Lever Assembly AC Head Assembly Reel S, Reel T Capstan Motor Cap Belt FE Head Assembly F Brake Assembly (HI) Idler Assembly (HI) Pinch Arm Assembly M Brake (SP) Assembly (HI) M Brake (TU) Assembly (HI) LDG Belt I I I I I I I I I I I I I I I I I I I I I 1,000 H : Check I: Change
Periodic Service Schedule 2,000 H I I I I 3,000 H 4,000 H I
Notes: 1.Clean all parts for the tape transport (Upper Drum with Video Head / Pinch Roller / Audio Control Head / Full Erase Head) using 90% lsopropyl Alcohol. 2.After cleaning the parts, do all DECK ADJUSTMENTS. 3.For the reference numbers listed above, refer to Deck Exploded Views. * B73 ------ Recording model only * B86 ------ Not used in 2 head model.
2-1-1
U27MENHS
Cleaning
Cleaning of Video Head
Clean the head with a head cleaning stick or chamois cloth. Procedure 1.Remove the top cabinet. 2.Put on a glove (thin type) to avoid touching the upper and lower drum with your bare hand. 3.Put a few drops of 90% Isopropyl alcohol on the head cleaning stick or on the chamois cloth and, by slightly pressing it against the head tip, turn the upper drum to the right and to the left. Notes: 1.The video head surface is made of very hard material, but since it is very thin, avoid cleaning it vertically. 2.Wait for the cleaned part to dry thoroughly before operating the unit. 3.Do not reuse a stained head cleaning stick or a stained chamois cloth.
Cleaning of Audio Control Head
Clean the head with a cotton swab. Procedure 1.Remove the top cabinet. 2.Dip the cotton swab in 90% isopropyl alcohol and clean the audio control head. Be careful not to damage the upper drum and other tape running parts. Notes: 1.Avoid cleaning the audio control head vertically. 2.Wait for the cleaned part to dry thoroughly before operating the unit or damage may occur.
ACE Head
Upper Cylinder
Do Not !
Video Head Cleaning Stick
2-1-2
U27MENHS
SERVICE FIXTURE AND TOOLS
J-1-1, J-1-2
J-2
J-3
J-4
J-5
Ref. No. Name J-1-1 J-1-2 Alignment Tape Alignment Tape
Part No. FL6A FL6N8 (1 speed only) FL6NS8 (2 speed only) Available Locally Available Locally Available Locally Available Locally
Adjustment Head Adjustment of Audio Control Head Azimuth and X Value Adjustment of Audio Control Head / Adjustment of Envelope Waveform
J-2 J-3 J-4 J-5
Guide Roller Adj.Screwdriver Mirror Azimuth Adj.Screwdriver + X Value Adj.Screwdriver -
Guide Roller Tape Transportation Check A/C Head Height X Value
2-2-1
U25PFIX
MECHANICAL ALIGNMENT PROCEDURES
Explanation of alignment for the tape to correctly run starts on the next page. Refer to the information below on this page if a tape gets stuck, for example, in the mechanism due to some electrical trouble of the unit. B. Method to place the Cassette Holder in the tapeloaded position without a cassette tape 1. Disconnect the AC Plug. 2. Remove the Top Case and Front Assembly. 3. Turn the LDG Belt in the appropriate direction shown in Fig. M1. Release the locking tabs shown in Fig. M1 and continue turning the LDG Belt until the Cassette Holder comes to the tape-loaded position. Allow a minute or two to complete this task.
Service Information
A. Method for Manual Tape Loading/Unloading To load a cassette tape manually: 1. Disconnect the AC plug. 2. Remove the Top Case and Front Assembly. 3. Insert a cassette tape. Though the tape will not be automatically loaded, make sure that the cassette tape is all the way in at the inlet of the Cassette Holder. To confirm this, lightly push the cassette tape further in and see if the tape comes back out, by a spring motion, just as much as you have pushed in. 4. Turn the LDG Belt in the appropriate direction shown in Fig. M1 for a minute or two to complete this task. To unload a cassette tape manually: 1. Disconnect the AC plug. 2. Remove the Top Case and Front Assembly. 3. Make sure that the Moving guide preparations are in the Eject Position. 4. Turn the LDG Belt in the appropriate direction shown in Fig. M1 until the Moving guide preparations come to the Eject Position. Stop turning when the preparations begin clicking or can not be moved further. However, the tape will be left wound around the cylinder. 5. Turn the LDG Belt in the appropriate direction continuously, and the cassette tape will be ejected. Allow a minute or two to complete this task.
Top View
Moving guide T preparation (Eject Position) Moving guide S preparation (Eject Position) LOAD UNLOAD /EJECT Side View
LDG Belt
Push the tape to load it. Push the locking tab gently to unlock when loading without a cassette.
Fig. M1
Bottom View
LDG Belt (B)
UNLOAD /EJECT
Cam Gear
Fig. M2
2-3-1
U27PMAPC
1.Tape Interchangeability Alignment
Note: To do these alignment procedures, make sure that the Tracking Control Circuit is set to the center position every time a tape is loaded or unloaded. (Refer to page 2-3-4, procedure 1-C, step 2.) Equipment required: Dual Trace Oscilloscope VHS Alignment Tape (FL6NS8) Guide Roller Adj. Screwdriver X-Value Adj. Screwdriver Note: Before starting this Mechanical Alignment, do all Electrical Adjustment procedures.
Flowchart of Alignment for tape traveling Loading (Use a blank tape.) Not good Adjust the height of the Guide Rollers (Supply side and take-up side). (Use a blank tape.) (pg. 2-3-3) 1-A Check to see that the tape is not creasing and that there is no slack on the supply and take-up side Guide Rollers. (Use a blank tape.) 1-A Adjust the X Value for maximum envelope. (pg. 2-3-3) (Use Alignment Tape.) 1-B
Adjust the envelope. (pg. 2-3-4)
1-C
Not good
Check the envelope. OK Adjust the Audio Section. (Azimuth Alignment) (pg. 2-3-4) Check the audio output. OK Check the following: 1. X Value (pg. 2-3-3) 2. Envelope (pg. 2-3-4) OK
1-C
Do the final tape-traveling test to see that the tape runs normally in play mode without creasing or slacking. 1-A OK
1-D
Not good
Completion
1-D
Not good
Adjust the X value and envelope. 1-B, 1-C
1-B, 1-C
2-3-2
U27PMAPC
1-A. Preliminary/Final Checking and Alignment of Tape Path
Purpose: To make sure that the tape path is well stabilized. Symptom of Misalignment: If the tape path is unstable, the tape will be damaged. Note: Do not use an Alignment Tape for this procedure. If the unit is not correctly aligned, the tape may be damaged. 1. Playback a blank cassette tape and check to see that the tape runs without creasing at Guide Rollers [2] and [3], and at points A and B on the lead surface. (Refer to Fig. M3 and M4.) 2. If creasing is apparent, align the height of the guide rollers by turning the top of Guide Rollers [2] and [3] with a Guide Roller Adj. Screwdriver. (Refer to Fig. M3 and M5.)
Guide Roller [2] Guide Roller [3]
3. Check to see that the tape runs without creasing at Take-up Guide Post [4] or without snaking between Guide Roller [3] and AC Head. (Fig. M3 and M5) 4. If creasing or snaking is apparent, adjust the Tilt Adj. Screw of the AC Head. (Fig. M6)
Azimuth Adj. Screw
AC Head X-Value Adj. Screwdriver
Tilt Adj. Screw
Fig. M6
1-B. X Value Alignment
Purpose: To align the Horizontal Position of the Audio/Control/ Erase Head. Symptom of Misalignment: If the Horizontal Position of the Audio/Control/Erase Head is not properly aligned, maximum envelope cannot be obtained at the Neutral position of the Tracking Control Circuit. 1. Connect the oscilloscope to TP301 (C-PB) and TP501 (CTL) on the Main CBA. Use TP502 (RFSW) as a trigger. 2. Playback the Gray Scale of the Alignment Tape (FL6NS8) and confirm that the PB FM signal is present. 3. Set the Tracking Control Circuit to the center position by pressing CH UP button then " PLAY " button on the unit. (Refer to note on bottom of page 2-3-4.)
ACE Head
A
B Take-up Guide Post [4]
Fig. M3
Lead Surface of Cylinder
Tape
Fig. M4
4. Use the X-Value Adj. Screwdriver so that the PB FM signal at TP301 (C-PB) is maximum. (Fig. M6) 5. Press CH UP button on the unit until the CTL waveform has shifted by approx. +2msec. Make sure that the envelope is simply attenuated (shrinks in height) during this process so that you will know the envelope has been at its peak.
Correct
Guide Roller Tape
Incorrect
Take-up Guide Post Tape
Fig. M5
2-3-3
U27PMAPC
6. Press CH DOWN button on the unit until the CTL waveform has shifted from its original position (not the position achieved in step 5, but the position of CTL waveform in step 4) by approximately -2msec. Make sure that the envelope is simply attenuated (shrinks in height) once CTL waveform passes its original position and is further brought in the minus direction. 7. Set the Tracking Control Circuit to the center position by pressing CH UP button and then " PLAY " button.
1-D. Azimuth Alignment of Audio/Control/ Erase Head
Purpose: To correct the Azimuth alignment so that the Audio/ Control/Erase Head meets tape tracks properly. Symptom of Misalignment: If the position of the Audio/Control/Erase Head is not properly aligned, the Audio S/N Ratio or Frequency Response will be poor. 1. Connect the oscilloscope to the audio output jack on the rear side of the deck. 2. Playback the alignment tape (FL6NS8) and confirm that the audio signal output level is 6kHz. 3. Adjust Azimuth Adj. Screw so that the output level on the AC Voltmeter or the waveform on the oscilloscope is at maximum. (Fig. M6) Dropping envelope level at the beginning of track.
1-C. Checking/Adjustment of Envelope Waveform
Purpose: To achieve a satisfactory picture and precise tracking. Symptom of Misalignment: If the envelope output is poor, noise will appear in the picture. The tracking will then lose precision and the playback picture will be distorted by any slight variation of the Tracking Control Circuit. 1. Connect the oscilloscope to TP301 (C-PB) on the Main CBA. Use TP502 (RF-SW) as a trigger. 2. Playback the Gray Scale on the Alignment Tape (FL6NS8). Set the Tracking Control Circuit to the center position by pressing CH UP button and then " PLAY " button on the unit. Adjust the height of Guide Rollers [2] and [3] (Fig. M3, Page 2-3-3) watching the oscilloscope display so that the envelope becomes as flat as possible. To do this adjustment, turn the top of the Guide Roller with the Guide Roller Adj. Screwdriver. 3. If the envelope is as shown in Fig. M7, adjust the height of Guide Roller [2] (Refer to Fig. M3) so that the waveform looks like the one shown in Fig. M9. 4. If the envelope is as shown in Fig. M8, adjust the height of Guide Roller [3] (Refer to Fig. M3) so that the waveform looks like the one shown in Fig. M9. 5. When Guide Rollers [2] and [3] (Refer to Fig.M3) are aligned properly, there is no envelope drop either at the beginning or end of track as shown in Fig. M9. Note: Upon completion of the adjustment of Guide Rollers [2] and [3] (Refer to Fig. M3), check the X Value by pushing the CH UP or DOWN buttons alternately, to check the symmetry of the envelope. Check the number of pushes to ensure center position. The number of pushes CH UP button to achieve 1/2 level of envelope should match the number of pushes CH DOWN button from center. If required, redo the "X Value Alignment."
Fig. M7 Dropping envelope level at the end of track.
Fig. M8 Envelope is adjusted properly. (No envelope drop)
Fig. M9
2-3-4
U27PMAPC
DISASSEMBLY/ASSEMBLY PROCEDURES OF DECK MECHANISM
Before following the procedures described below, be sure to remove the deck assembly from the cabinet. (Refer to CABINET DISASSEMBLY INSTRUCTIONS on page 1-5-1.) All the following procedures, including those for adjustment and replacement of parts, should be done in Eject mode; see the positions of [44] and [45] in Fig.DM1 on page 2-4-3. When reassembling, follow the steps in reverse order. STEP START/LOC. ING No. No. [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [1] [1] [2] [2] [4] [2] [7] [8] [9] [2] [10] [11] [12] [14] [15] [2] [16] [16] [19] [20] [20] [22] [22] [22] [25] REMOVAL REMOVE/*UNHOOK/ UNLOCK/RELEASE/ UNPLUG/DESOLDER 2(S-1) *(L-1), (S-1A) *(L-2) *(L-3),*(P-1) Desolder, 3(S-2) Desolder, LDG Belt, 2(S-3) (S-4) *(P-2) *(L-4) *(P-3) (S-5) (S-6) *(L-5) (S-7),*(P-4) INSTALLATION ADJUSTMENT CONDITION
PART Guide Holder A Slider (SP) Slider (TU) Lock Lever Cassette Plate Cylinder Assembly Loading Motor Assembly AC Head Assembly C Door Opener Pinch Arm (B) Pinch Arm Assembly FE Head Assembly Prism Slider Shaft C Drive Lever (SP) C Drive Lever (TU) Capstan Motor Clutch Assembly (HI) Center Gear F Brake Assembly (HI) T T T T T T T T T T T T T T T T B B B B B B B B B B B B B B B
Fig. No. DM3 DM4 DM5 DM5 DM5 DM5 DM1,DM6 DM1,DM7 DM1,DM7 DM1,DM8 DM1,DM8 DM1,DM8 DM1,DM8 DM1,DM9 DM1,DM9 DM10 DM10 DM10
Cassette Holder Assembly T
Tape Guide Arm Assembly T
DM2,DM11 3(S-8), Cap Belt DM2,DM12 (C-1) DM12 DM2,DM12 *(L-6) DM2,DM13 (S-9),*(L-7),*(L-8) DM2,DM13 DM2,DM13 (C-2) DM2,DM13 (C-3) DM2,DM13 (C-4) DM2,DM13 (C-5) DM13 DM13 DM1,DM13 DM1,DM14 *(L-9) DM2,DM14 *(P-5) (+)Refer to Alignment Sec.Pg.2-4-8
*[22]
[23] [24] [25] [26] [27] [28] [29] [30] [31] [32] [33]
Worm Holder Pulley Assembly (HI) Mode Gear [20],[25] Mode Lever (HI) [22],[23], Cam Gear (A) (HI) [26] [26] TR Gear C TR Gear Spring [28] TR Gear A/B [29] FF Arm (HI) [31] [26] Idler Assembly (HI) BT Arm [26]
2-4-1
U27HSPAL2DA
STEP STARTING /LOC. No. No. [34] [35] [36] [37] [38] [39] [40] [41] [42] [43] [44] [45] [46] [47] [48] [49] [50] (1) [26] [34] [16],[26] [2],[26] [37]
PART Loading Arm (SP) Assembly Loading Arm (TU) Assembly M Brake (TU) Assembly (HI) M Brake (SP) Assembly (HI) Tension Lever Assembly
Fig. No. B B T T T T T T T T T T T R R T DM2,DM14 DM2,DM14 DM1,DM15
REMOVAL REMOVE/*UNHOOK/ UNLOCK/RELEASE/ UNPLUG/DESOLDER
INSTALLATION ADJUSTMENT CONDITION (+)Refer to Alignment Sec.Pg.2-4-8 (+)Refer to Alignment Sec.Pg.2-4-8
DM1,DM15 *(P-6) DM1,DM15 DM15 *(L-10) DM1,DM15 (C-6) DM1,DM15 (C-7) DM1,DM15 DM1,DM15 DM1,DM16 DM1,DM16 DM1,DM16 *(L-11) DM17 DM17 DM1,DM6 *(L-12) (6) (7) (+)Refer to Alignment Sec.Pg.2-4-8
[38] T Lever Holder M Gear (HI) [40] [15],[40] Sensor Gear (HI) [36],[40] Reel T [38] Reel S Moving Guide S [34],[38] Preparation [35] [19] [27] [47] [49] [49] (2) Moving Guide T Preparation TG Post Assembly Rack Assembly F Door Opener Cleaner Assembly CL Post (3)
T DM6 (4) (5)
(1): Follow steps in sequence. When reassembling, follow the steps in reverse order. These numbers are also used as identification (location) No. of parts in the figures. (2): Indicates the part to start disassembling with in order to disassemble the part in column (1). (3): Name of the part (4): Location of the part: T=Top B=Bottom R=Right L=Left (5): Figure Number (6): Identification of parts to be removed, unhooked, unlocked, released, unplugged, unclamped, or desoldered. P=Spring, W=Washer, C=Cut Washer, S=Screw, *=Unhook, Unlock, Release, Unplug, or Desolder e.g., 2(L-2) = two Locking Tabs (L-2). (7): Adjustment Information for Installation (+):Refer to Deck Exploded Views for lubrication. .
* [ 22 ] F Brake Assembly (HI) is not used in 2 head model.
2-4-2
U27HSPAL2DA
Top View
[44] [7] [45] [49] [9] [46] [8]
[14] [13] [11] [15] [38] [10] [12] [36]
[37]
[43]
[32]
[41] [31] [40]
[42]
Fig. DM1
Bottom View
[19]
[35]
[34]
[23] [24]
[25]
[26]
[27]
[22]
[28]
[20]
[33]
Fig. DM2
2-4-3 U27HSPAL2DA
[3]
(S-1) [1] (S-1)
[4] (L-1)
(L-3) [5] (S-1A)
(L-2) [6] (P-1)
Fig. DM5
[49]
Fig. DM3
[7]
Pin D Pin C [2] 2 Pull up A
[50] (L-12)
1 Slide
Pin A
Pin B Slot A
(S-2)
Slots B
A
Slot A First, while pushing the locking tab as shown in the right, slide and pull up the right side on [2] to release Pin A and Pin B from the slots A. Then, remove Pin C and Pin D on [2] from the slots B as shown. Locking tab View for A
Desolder from bottom
Lead with Red Stripe
View for A
Fig. DM6
Fig. DM4
2-4-4
U27HSPAL2DA
(S-4) [9] [8]
[14]
(S-5) (S-6) [15]
A
Desolder from bottom
[8]
(S-3) LDG Belt
Lead with White Stripe
View for A
Fig. DM7
Fig. DM9
Adj. Screw
[11] (L-4)
[17] (L-5) (P-3)
[13] [12]
[16] [18] (P-4) [10] (P-2) A
Pin of [12] Pin of [10]
(S-7)
Fig. DM10
Groove of [27] When reassembling [10] and [12], confirm that pin of [10] and pin of [12] are in the [27] groove of [27] as shown. View for A
Fig. DM8
2-4-5 U27HSPAL2DA
(S-8)
[26]
(C-3)
(S-9) (L-8)
[23] (L-7) [24] (C-4) (C-5) [28] [29] [30] (C-2) [25]
[19] Cap Belt
[27]
Fig. DM11
[22]
turn (L-6)
(C-1) [20]
[31] [21] Position of Mode Lever when installed Pin of [33] Pin of [36] Pin of [37]
Bottom View [26] [27]
Align [26] and [27] as shown. Pin on [22] First groove on [27] First tooth on [44] [27] When reassembling [27], meet the first groove on [27] to the first tooth on [44] as shown.
[27] Top View Position of pin on [22]
Fig. DM13 Fig. DM12
2-4-6 U27HSPAL2DA
(P-5) [33] Refer to the Alignment Section, Page 2-4-8.
[44] [45] [46]
(L-11)
[35] [32] (L-9) [34]
Fig. DM16 Fig. DM14
[38]
[43] (P-6) [39] (L-10) turn turn [42]
[36]
turn
[48] [47] Slide
Fig. DM17
[37]
(C-7)
[41]
(C-6) [40]
Fig. DM15
2-4-7
U27HSPAL2DA
ALIGNMENT PROCEDURES OF MECHANISM
The following procedures describe how to align the individual gears and levers that make up the tape loading/unloading mechanism. Since information about the state of the mechanism is provided to the System Control Circuit only through the Mode Switch, it is essential that the correct relationship between individual gears and levers be maintained. All alignments are to be performed with the mechanism in Eject mode, in the sequence given. Each procedure assumes that all previous procedures have been completed. IMPORTANT: If any one of these alignments is not performed properly, even if off by only one tooth, the unit will unload or stop and it may result in damage to the mechanical or electrical parts.
Alignment 1 Loading Arm (SP) and (TU) Assembly
Install Loading Arm (SP) and (TU) Assembly so that their triangle marks point to each other as shown in Fig. AL2.
Alignment 2 Mode Gear
Keeping the two triangles pointing at each other, install the Loading Arm (SP) Assembly so that the last tooth of the gear meets the most inside teeth of the Mode Gear. See Fig. AL2.
Alignment 1 Triangle Marks Loading Arm (SP) Assembly Last Tooth
Alignment points in Eject Position
Top View
Alignment 2 Loading Arm (TU) Assembly Most inside teeth of Mode Gear
Alignment 3
Mode Gear
Fig. AL2
Alignment 3 Cam Gear (A) (HI), Rack Assembly
Install the Rack Assembly so that the first tooth on the gear of the Rack Assembly meets the first groove on the Cam Gear (A) (HI) as shown in Fig. AL3.
Top View Alignment 2 Cam Gear (A)(HI) Alignment 3
Bottom View
Alignment 1
First tooth
Fig. AL1
First groove Gear on Rack Assembly on the Cam Gear (A)(HI)
Fig. AL3
2-4-8
U27HSAPM
EXPLODED VIEWS AND PARTS LIST SECTION
VIDEO CASSETTE RECORDER VR-251/VR-451
Sec. 3: Exploded views and Parts List Section
I Exploded views I Parts List
TABLE OF CONTENTS
Exploded Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1-1 Mechanical Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2-1 Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3-1 Deck Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4-1
EXPLODED VIEWS
Front Panel
A1X
3-1-1
HE220FEX
Cabinet
2L011 2L011 2L011 2B18
A2
2L011 2B9 2B9
JACK CBA
A5
2L012
2L022
2L011
2L042
2L021 2L021
2L022
2L021
2L021
2L051
2B5
2L041
2L021
SENSOR CBA
2L031 2B7 2L041 A21
1B1
MAIN CBA
2B46 2B8
2L099 A10
A3
A7
3-1-2
HE220CEX
Packing
X1
Some Ref. Numbers are not in sequence.
X20A
X20B
X3
X2
S2
X4
S3
S2
Unit
A14
S1
3-1-3
HE220PEX
DECK EXPLODED VIEWS
Deck Mechanism View 1
Mark B2 Description Floil G-684G or Multemp MH-D (Blue grease) SLIDUS OIL #150
B35 L1467 B494 L1191 B9 B73 B10 B411 B567 B553
L1053
B410 B74
L1051
Chassis Assembly Top View (Lubricating Point)
B501
L1450 B12 B11 B492 B37 B86 Some Ref. Numbers are not in sequence. L1450 B121 B126 B8 L1466
B571
[ VR-451 ]
Chassis Assembly Bottom View (Lubricating Point)
3-1-4
HE220DEX
Deck Mechanism View 2
Mark B487 B587 B416 B521 B591 B590 B573 B574 B585 B518 B564 B31 B414 B572 B148 B592 B558 B557 Description Floil G-684G or Multemp MH-D (Blue grease) SLIDUS OIL #150 SANKOUL FG84M (Yellow grease) B522 L1406 B3
B499 B508
B565 L1151 B417 B584 B568 B525
B578 B579 B582 B580 B583 B579 B581 B559 View for A B516 A
B133
B551
B491 B488 B513 Bottom Side (Grease point)
B507
B52
Bottom Side (Grease point)
Some Ref. Numbers are not in sequence.
3-1-5
HE220DEX
Deck Mechanism View 3
Mark L1321 B347 Description Floil G-684G or Multemp MH-D (Blue grease) SLIDUS OIL #150
L1321
B355 B354
B483
L1341 B425 B482 B562 B300 B313 B529
B563
B360 B359
B361
B555
B303 Some Ref. Numbers are not in sequence. B514
3-1-6
HE220DEX
MECHANICAL PARTS LIST
PRODUCT SAFETY NOTE: Products marked with a ! have special characteristics important to safety. Before replacing any of these components, read carefully the product safety notice in this service manual. Don't degrade the safety of the product through improper servicing. NOTE: Parts that are not assigned part numbers (---------) are not available. Comparison Chart of Models and Marks
Model
VR-251 VR-451 Ref. No. Mark X1 X1 X2 X3 X4 X20A! X20B! A A B B Description REMOTE CONTROL UNIT 364/CRC005 or REMOTE CONTROL UNIT 364/CRC007 REMOTE CONTROL UNIT 364/CRC005 or REMOTE CONTROL UNIT 364/CRC007 DRY BATTERY R6P/2S or DRY BATTERY ES-GR6M-C RF CORD PAL 1.2M or RF CABLE CC1001020012010 ACCESSORY BAG K8092BA OWNER'S MANUAL(CZECH) HE220ED OWNER'S MANUAL(SLVAKIAN) HE220ED Part No. N9469ED NA657ED N9470ED NA665ED XB0M451T0001 XB0M571GLP01 WPZ0122LG001 WPZ0122LW001 0VM404632 0VMN03808 0VMN03809
Mark
A B
Ref. No. Mark A1X A1X A2 A3 A5 A7 A10! A10! A14 A14 A14 A21 1B1 1B1 2B5 2B7 2B8 2B9 2B18 2L011 2L012 2L021 2L022 2L031 2L041 2L042 2B46 2L051 2L099 A B A B A B A B
Description FRONT ASSEMBLY HE220ED FRONT ASSEMBLY HE320ED CASE, TOP(ANTHRACITE) HE240ED CHASSIS HE470ED JACK BOARD(2-21P) HE470ED (See Electrical Parts List) PANEL, BOTTOM(RESET) HE240ED LABEL, RATING HE220ED LABEL, RATING HE320ED LABEL, SERIAL NO. HE240ED LABEL, BAR CODE HE220ED LABEL, BAR CODE HE320ED LABEL, WARNING(CZE) HE456ED DECK ASSEMBLY CZD012/VM17A0 DECK ASSEMBLY CZD012/VM17C0 SHEILD, CYLINDER HC460ED HEAD SHIELD ASSEMBLY HE470ED (See Electrical Parts List) BUSH, LED(F) H3700UD (See Electrical Parts List) CUSHION HC460ED FIBER, TOP CASE HC460ED SCREW, P-TIGHT 3X10 BIND HEAD+ SCREW, P-TIGHT 3X10 BIND HEAD+ SCREW, P-TIGHT M3X10 WASHER HEAD+ SCREW, P-TIGHT M3X10 WASHER HEAD+ (See Electrical Parts List) SCREW, S-TIGHT M3X6 BIND HEAD+ P-TIGHT SCREW 3X8 BIND + P-TIGHT SCREW 3X8 BIND + ROHM HOLDER H7770JD (See Electrical Parts List) SCREW, S-TIGHT M3X5 BIND HEAD+ SCREW, P-TIGHT M3X8 BIND HEAD+ PACKING
Part No. 0VM204322 0VM204323 0VM101267 0VM000174
0VM305896 ------------------------------------------------------N17A0FL N17C0FL 0VM305182
0VM413251 0VM412906 GBCP3100 GBCP3100 GCMP3100
GBMS3060 GBMP3080 GBMP3080
GBMS3050 GBCP3080
S1 S1 S2 S3
A B
GIFT BOX CARTON HE220ED GIFT BOX CARTON HE320ED STYROFOAM HE470ED UNIT, BAG V4010PA ACCESSORIES
0VM306477 0VM306478 0VM203850 0VM406453B
20030805
3-2-1
HE220CA
ELECTRICAL PARTS LIST
PRODUCT SAFETY NOTE: Products marked with a ! have special characteristics important to safety. Before replacing any of these components, read carefully the product safety notice in this service manual. Don't degrade the safety of the product through improper servicing. NOTES: 1. Parts that are not assigned part numbers (---------) are not available. 2. Tolerance of Capacitors and Resistors are noted with the following symbols. C.....±0.25% G.....±2% M.....±20% D.....±0.5% J......±5% N.....±30% F.....±1% K.....±10% Z.....+80/-20%
C154 C153 Ref. No. C025 C026 C053 C056 C057 C151 Description CERAMIC CAP .(AX) X K 5600pF/16V ELECTROLYTIC CAP 47µF/16V M H7 . ELECTRIC DOUBLE LAYER CAP0.047F/5.5V Z or ELECTRIC DOUBLE LAYER CAP 0.047F/5.5V Z . CHIP CERAMIC CAP B K 0.047µF/50V or . CHIP CERAMIC CAP B K 0.047µF/25V . CHIP CERAMIC CAP CH J 470pF/50V or . CHIP CERAMIC CAP CG J 470pF/50V . CHIP CERAMIC CAP F Z 0.1µF/50V or . CHIP CERAMIC CAP F Z 0.1µF/25V or . CHIP CERAMIC CAP FZ Z 0.1µF/50V . C152 CHIP CERAMIC CAP F Z 0.1µF/50V or . CHIP CERAMIC CAP F Z 0.1µF/25V or . CHIP CERAMIC CAP FZ Z 0.1µF/50V . CHIP CERAMIC CAP F Z 0.1µF/50V or . CHIP CERAMIC CAP F Z 0.1µF/25V or . CHIP CERAMIC CAP FZ Z 0.1µF/50V . CHIP CERAMIC CAP F Z 0.1µF/50V or . CHIP CERAMIC CAP F Z 0.1µF/25V or . Description MCV CBA Consists of the following Main CBA(MCV-A) JACK CBA(MCV-C) SENSOR CBA Part No. 0VSA13960 ----------------------0VSA13549 CHIP CERAMIC CAP FZ Z 0.1µF/50V . C155 C156 C157 C158 C159 ELECTROLYTIC CAP 10µF/16V M H7 . ELECTROLYTIC CAP 10µF/16V M H7 . ELECTROLYTIC CAP 1µF/50V M H7 . CHIP CERAMIC CAP B K 1000pF/50V . CHIP CERAMIC CAP F Z 0.1µF/50V or . CHIP CERAMIC CAP F Z 0.1µF/25V or . CHIP CERAMIC CAP FZ Z 0.1µF/50V . C251 C252 Description Main CBA (MCV-A) Consists of the following Part No. ----------C253 C254 ELECTROLYTIC CAP 10µF/16V M H7 . CHIP CERAMIC CAP B K 1000pF/50V . ELECTROLYTIC CAP 1µF/50V M H7 . CHIP CERAMIC CAP F Z 0.1µF/50V or . CHIP CERAMIC CAP F Z 0.1µF/25V or . CHIP CERAMIC CAP FZ Z 0.1µF/50V . CT2E683HJE06 CT2E683DC011 CCN2EMP0E222 CA2E222MR049 CA2H330NC010 CCD2JKP0B103 CCD3AKPSL560 CCD3AJPSL560 CCA1JKT0B102 CCA1CKT0X562 CMA1JJS00223 CA1J223MS029 CE1CMAVS