SLV-E120AE/E220AE/UY/VP1/VP2/E270CP/VC1/VC2/
E280CP/UX/VC1/VC2
RMT-V206C/V206D/V207C/V207D/V207E/V207G/V207H
SERVICE MANUAL
AEP Model
SLV-E120AE/E220AE/VP1/VP2/E270CP/VC1/VC2/E280CP/VC1/VC2
UK Model
SLV-E220UY/E280UX
|
|
|
|
|
|
|
|
|
|
|
|
|
Photo : SLV-E280UX |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
SPECIFICATIONS |
|
|
|
|
|
|
|
|
|
|
System (SLV-E220UY/E280UX) |
General |
||
|
|
|
|
|
|
|
|
|
|
Channel coverage |
|
Power requirements |
|
|
|
|
|
|
|
|
|
|
|
PAL (I) : |
|
|
220 – 240 V AC, 50 Hz |
|
|
|
|
|
|
|
|
|
|
UHF B21 - B69 |
|
Power consumption |
|
|
|
|
|
|
|
|
|
|
|
RF output signal |
|
|
17 W |
|
|
|
|
|
|
|
|
|
|
UHF I21 - 69 CH |
5W (standby)(SLV-E120AE/E220 Series) |
||
|
|
|
|
|
|
|
|
|
|
Aerial out |
|
|
6W (standby)(Except SLV-E120AE/E220 Series) |
|
|
|
|
|
|
|
|
|
|
75-ohm asymmetrical aerial socket |
Operating temperature |
||
|
|
|
|
|
|
|
|
|
|
System (EXCEPT SLV-E220UY/E280UX) |
5°C to 40°C |
||
|
|
|
|
|
|
|
|
|
|
Storage temperature |
|||
|
|
|
|
|
|
|
|
|
|
Channel coverage |
|
–20°C to 60°C |
|
|
|
|
|
|
|
|
|
|
|
PAL (B, G) : |
|
Dimensions |
|
|
|
|
|
|
|
|
|
|
|
VHF E2 - E12 |
|
Approx. 360 x 97 x 298 mm (w/h/d) |
|
|
|
|
|
|
|
|
|
|
|
(comprese channel C) |
including projecting parts and controls |
||
|
|
|
|
|
|
|
|
|
|
(A - H only For |
Italy) |
Mass |
|
|
|
|
|
|
|
|
|
|
|
UHF E21 - E69 |
|
Approx. 3.7 kg |
|
|
|
|
|
|
|
|
|
|
|
CATV S01 - S03, S1 - S20 |
Supplied accessories |
||
|
|
|
|
|
|
|
|
|
|
HYPER BAND S21 - S41 |
|||
|
|
|
|
|
|
|
|
|
|
Intermediate frequency |
Remote commander (1) |
||
|
|
|
|
|
|
|
|
|
|
F1 - 1 Video 38.9MHz |
R6 (size AA) batteries (2) |
||
|
|
|
|
|
|
|
|
|
|
F2 - 1 Audio 33.4MHz |
Aerial cable (1) |
||
|
|
|
|
|
|
|
|
|
|
RF output signal |
|
|
Mains lead (1) |
|
|
|
|
|
|
|
|
|
|
UHF G22 - 69 |
|
|
|
|
|
|
|
|
|
|
|
|
|
Aerial out |
|
|
|
|
|
|
|
|
|
|
|
|
|
75-ohm asymmetrical aerial socket |
Design and specifications are subject to change without notice. |
||
|
|
|
|
|
|
|
|
|
|
Inputs/outputs |
|
|
|
|
|
|
|
|
|
|
|
|
|
òEURO-AV1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
21-pin |
|
|
|
|
|
|
|
|
|
|
|
|
|
Video input |
|
: pin 20 |
|
|
|
|
|
|
|
|
|
|
|
Audio input |
|
: pins 2 and 6 |
|
|
|
|
|
|
|
|
|
|
|
Video output |
: pin 19 |
|
|
|
|
|
|
|
|
|
|
|
|
Audio output |
: pins 1 and 3 |
|
|
|
|
|
|
|
|
|
|
|
|
J EURO-AV2 (2nd Scart) |
|
||
|
|
|
|
|
|
|
|
|
|
21-pin |
(Except SLV-E120AE/E220 Series) |
||
|
|
|
|
|
|
|
|
|
|
Video input |
|
: pin 20 |
|
|
|
|
|
|
|
|
|
|
|
Audio input |
|
: pins 2 and 6 |
|
|
|
|
|
|
|
|
|
|
|
Front Line In (SLV-E280 Series) |
|
||
|
|
|
|
|
|
|
|
|
|
VIDEO IN, Phono jack (1) |
|
||
|
|
|
|
|
|
|
|
|
|
Input signal : 0.5 –1.5 Vp-p |
|
||
|
|
|
|
|
|
|
|
|
|
75 ohms, unbalanced, sync negative |
|
||
|
|
|
|
|
|
|
|
|
|
AUDIO IN, Phone jack (1) |
|
||
|
|
|
|
|
|
|
|
|
|
Input level : –8 dBs |
JVIDEO CASSETTE RECORDER |
||
|
|
|
|
|
|
|
|
|
|
(0 dBs = 0.755 Vrms) |
|||
|
|
|
|
|
|
|
|
|
|
47 kilohoms |
|
|
|
|
|
|
|
|
|
|
|
|
|
Input impedance : more than |
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
MICROFILM
SAFETY CHECK-OUT
After correcting the original service problem, perform the following safety check before releasing the set to the customer :
1.Check the area of your repair for unsoldered or poorly-sol- dered connections. Check the entire board surface for solder splashes and bridges.
2.Check the interboard wiring to ensure that no wires are “pinched” or contact high-wattage resistors.
3.Look for unauthorized replacement parts, particularly transistors, that were installed during a previous repair. Point them out to the customer and recommend their replacement.
4.Look for parts which, though functioning, show obvious signs of deterioration. Point them out to the customer and recommend their replacement.
5.Check the B+ voltage to see it is at the values specified.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK !ON THE SCHEMATIC DIAGRAMS AND
IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
– 2 –
TABLE OF CONTENTS
Section |
Title |
Page |
Section |
Title |
Page |
|
______ |
____ |
____ |
______ |
____ |
____ |
|
1. |
GENERAL |
|
|
TM-2 Board Circuit Diagram ........................................ |
4-29 |
|
|
Step 1 Setting up the remote commander ..................... |
1-1 |
A7101 Display (FLD) Grid/Anode Assignment |
|
||
|
Step 2 Connecting the VCR .......................................... |
1-1 |
Drawing & Table ........................................................... |
4-30 |
||
|
Step 3 Tuning the TV to your VCR ............................... |
1-1 |
TM-9 Board PDC/VPS (SLV-E220VP1/E270 & |
|
||
|
Step 4 Selecting a language ........................................... |
1-2 |
E280 Series) .................................................................. |
4-31E |
||
|
Step 5 Tuning the VCR to TV Channels ....................... |
1-2 |
|
|
|
|
|
Step 6 Setting the Clock ................................................ |
|
1-2 |
5. ADJUSTMENTS |
|
|
|
Additional Tuning Instructions ..................................... |
1-3 |
1. Maintaining and Checking the Mechanism ............... |
5-1 |
||
|
Setting a Satellite Tuner ................................................ |
|
1-3 |
l -1. Regular Checks and Maintenance Items ............... |
5-1 |
|
|
Playing a Tape ............................................................... |
|
1-3 |
1-1-1. |
Regular Checks ................................................ |
5-1 |
|
Recording TV Programmes ........................................... |
1-4 |
1-1-2. Cleaning ............................................................ |
5-1 |
||
|
Recording TV Programmes using Video Plus + ........... |
1-4 |
1-2 Service Tools ........................................................... |
5-2 |
||
|
Playing/Searching at Various Speeds ............................ |
1-5 |
1-2-1. |
Service Tools ................................................... |
5-2 |
|
|
Setting the Timer Manually ........................................... |
1-5 |
1-2-2. Using the Relay Cable (VHJ-0106) .................. |
5-3 |
||
|
Recording TV Programmes using the Quick Timer ...... |
1-6 |
2. An Overview of the Mechanism ................................ |
5-3 |
||
|
Checking/Cancelling Timer Settings ............................. |
1-6 |
2-1. Names of the Main Parts ........................................ |
5-3 |
||
|
Searching using the index function ............................... |
1-6 |
2-1-1. Cassette Mechanism Assembly ........................ |
5-3 |
||
|
Editing with another VCR ............................................. |
|
1-7E |
2-1-2. Top View .......................................................... |
5-4 |
|
|
Adjusting the Picture ..................................................... |
|
1-7E |
2-1-3. Under Side ........................................................ |
5-4 |
|
|
Visual index ................................................................... |
|
1-7E |
2-2. An Overview of the Mechanism Modes ................ |
5-5 |
|
|
|
|
|
2-2-1. Mechanism Mode Switching Table .................. |
5-5 |
|
2. |
DISASSEMBLY |
|
|
2-2-2. Movement Check List for the Main Parts of the |
||
|
1-1. Removal of Cabinet, Mechanism Unit and Main |
|
|
Mechanism ........................................................ |
5-6 |
|
|
Board ..................................................................... |
|
2-1 |
2-2-3. How to Check the Mechanism |
|
|
|
Removing the Cabinet Parts .................................. |
2-1 |
|
Mode Position ................................................... |
5-6 |
|
|
Removing the Mechanism Main Unit and the |
|
2-2-4. Self-Diagnosis Display ..................................... |
5-6 |
||
|
CP-1 PWB Assembly ............................................. |
|
2-1 |
3. Disassembling the Main Parts of the Mechanism ..... |
5-7 |
|
|
l-2. Temporarily Setting Up and Connecting |
|
3-1. How to Make the Mechanism Move ...................... |
5-7 |
||
|
CP-1 PWB Assembly ............................................. |
|
2-3E |
3-1-1. How to Operate the Loading Motor Using |
|
|
|
1-3. Installation of the Front Panel ................................ |
2-3E |
|
A DC Voltage Supply ....................................... |
5-7 |
|
|
|
|
|
3-1-2. Operating the Loading Motor |
|
|
3. DIAGRAMS |
|
|
|
by the Manual Method ...................................... |
5-7 |
|
|
Circuit Boards Location ................................................ |
|
3-1 |
3-1-3. Making the Mechanism Move |
|
|
|
Overall wiring Diagram ................................................ |
|
3-3 |
|
Using the Manual Method ................................ |
5-7 |
|
Mechanism Connection Diagram .................................. |
3-5 |
3-2. Mechanism Unit ..................................................... |
5-8 |
||
|
Video Circuit Diagram .................................................. |
|
3-6 |
3-3. Cassette Drive Mechanism ..................................... |
5-8 |
|
|
System Control & Servo Circuit Diagram ................... |
3-9 |
3-3-1. Cassette Mechanism Assembly ........................ |
5-8 |
||
|
Audio Circuit Diagram .................................................. |
|
3-12 |
3-3-2. Cassette Drive Gear .......................................... |
5-9 |
|
|
Terminal & Input/ Output Selector Circuit Diagram |
|
3-3-3. Door opener, Under Frame and Stand L ........... |
5-9 |
||
|
(SLV-E270 & E280 Series) ........................................... |
3-14E |
3-3-4. Start Rack Gear and Front Rack Gear .............. |
5-10 |
||
|
|
|
|
3-4. Cleaner Roller Assembly ....................................... |
5-10 |
|
4. SCHEMATIC DIAGRAMS AND PRINTED |
|
3-5. Cylinder (DRUM) .................................................. |
5-11 |
|||
|
WIRING BOARDS |
|
|
3-5-1. Upper Cylinder Assembly (UPPER DRUM) ... |
5-11 |
|
|
CP-1 Board (PW-A) Power Supply Circuit Diagram .... |
4-1 |
3-5-2. Cylinder Motor (ROTOR and STATOR) .......... |
5-12 |
||
|
CP-1 Board (AD-A) Terminal & Selector |
|
3-5-3. Cylinder Assembly ........................................... |
5-12 |
||
|
(SLV-E270 & E280 Series) ........................................... |
4-3 |
3-6. FE Head and ACE Head ......................................... |
5-13 |
||
|
CP-1 Board (AD-A) Terminal Circuit Diagram |
|
3-6-1. Audio R/P Head Assembly (ACE HEAD) ........ |
5-13 |
||
|
(SLV-E120AE/E220 Series) .......................................... |
4-5 |
3-6-2. Full Erase Head ................................................ |
5-13 |
||
|
CP-1 Board (VA-A) Video & Audio Circuit Diagram |
|
3-7. Capstan Motor ........................................................ |
5-14 |
||
|
(SLV-E270 Series/E280CP/VC1/VC2) ......................... |
4-7 |
3-7-1. Capstan Motor .................................................. |
5-14 |
||
|
CP-1 Board (VA-A) Video & Audio Circuit Diagram |
|
3-7-2. Capstan Brake Assembly .................................. |
5-14 |
||
|
(SLV-E120AE & E220 Series) ...................................... |
4-9 |
3-8. Loading Motor Assembly and |
|
||
|
CP-1 Board (VA-A) Video & Audio Circuit Diagram |
|
Worm Gear Assembly ............................................ |
5-15 |
||
|
(SLV-E280UX) .............................................................. |
|
4-11 |
3-9. Pinch Roller Pressure Mechanism ......................... |
5-15 |
|
|
Video Circuit Waveforms .............................................. |
|
4-13 |
3-9-1. Pinch Roller Lever Assembly ........................... |
5-15 |
|
|
VP-1 Board Video Pre-Amp circuit Diagram ............... |
4-14 |
3-9-2. Pinch Lift Cam and Pinch Cam Gear ............... |
5-16 |
||
|
CP-1 Board (SV-A) Servo Circuit Diagram .................. |
4-16 |
3-10. L Guide Lever Assembly and |
|
||
|
Servo Circuit Waveforms .............................................. |
|
4-18 |
Load Lever Assembly .......................................... |
5-17 |
|
|
CP-1 Board (SY-A) System Control, Timer & Tuner |
|
3-11. BT Lever Assembly ............................................. |
5-17 |
||
|
Circuit Diagram (Except SLV-E220UY/E280UX) ....... |
4-19 |
3-12. Reel Drive Mechanism ......................................... |
5-18 |
||
|
IC 301 System Control, Timer & Tuning Control MPU Pin |
3-12-1. Reel belt, Reel Pulley, Friction Gear |
|
|||
|
Functions Table ............................................................. |
|
4-20 |
|
Assembly and Clutch Change Lever ............... |
5-18 |
|
CP-1 Board (SY-A) System Control, Timer & Tuner |
|
3-12-2. Clutch Mounting Assembly ............................ |
5-18 |
||
|
Circuit Diagram (SLV-E220UY/E280UX) ................... |
4-21 |
3-12-3. S Soft Lever, Supply Reel Assembly |
|
||
|
TM-1 Board Operation Key Circuit Diagram ............... |
4-27 |
|
and S Reel Gear .............................................. |
5-18 |
|
– 3 –
Section |
Title |
Page |
______ |
____ |
____ |
3-12-4. T Soft Brake Assembly, Take Up Reel |
|
|
Assembly, T Reel Gear ................................... |
5-19 |
|
3-13. Brakes .................................................................. |
|
5-19 |
3-13-1. S Brake Assembly, T Brake |
|
|
Assembly, T Brake ACT Slide ........................ |
5-19 |
|
3-13-2. Brake Control Lever and Brake ACT Lever |
|
|
Assembly ........................................................ |
|
5-20 |
3-13-3. S Brake ACT Slide and BT Spring Lever |
|
|
Assembly ........................................................ |
|
5-20 |
3-14. Guides .................................................................. |
|
5-21 |
3-14-1. Guide Roller Assembly ................................... |
5-21 |
|
3-14-2. S and T Incline Mounting Assemblies ............ |
5-21 |
|
3-15. Wheel Gear 2, Main Cam and Mode Switch ....... |
5-22 |
|
3-16. Crescent Slide ...................................................... |
|
5-23 |
3-17. S Load Gear, T Load Gear, S Load Lever |
|
|
Assembly and T Load Lever Assembly ............... |
5-24 |
|
3-18. Tape Sensors, Reel Sensor and EP SW Lever ...... |
5-25 |
|
3-18-1. Tape Top Sensor and Tape End Sensor ........... |
5-25 |
|
3-18-2. Reel Sensor ..................................................... |
|
5-25 |
3-18-3. EP Switch Lever ............................................. |
|
5-25 |
4. Mechanism Checks and Adjustments ........................ |
5-26 |
|
4-1. Reel Table Torque Check ....................................... |
5-26 |
|
4-2. Adjusting the BT Lever Assembly Position and Checking the Back Tension Torque in Play Mode . 5-26
4-2-1. BT Lever Pole Position Adjustment ................. |
5-26 |
|
4-2-2. |
Checking the Back Tension Torque |
|
|
Play Mode ......................................................... |
5-26 |
4-3. Tape Path Adjustment ............................................ |
5-27 |
|
4-3-1. Adjustment Procedure ...................................... |
5-27 |
|
4-3-2. |
Load Lever Assembly Height Adjustment ........ |
5-27 |
4-3-3. |
Guide Roller Height Adjustment ...................... |
5-28 |
4-3-4. Audio R/P Head (ACE HEAD) Height |
|
|
|
Adjustment, Azimuth Adjustment and |
|
|
Horizontal Position Adjustment ........................ |
5-29 |
4-3-5. |
Checking After Adjustment .............................. |
5-30E |
6. ELECTRICAL ADJUSTMENTS
Circuit Boards Location ................................................ |
6-1 |
Self -Diagnosis Display ................................................. |
6-2 |
1. Self-Diagnosis Contents and Mechanism Mode |
|
Display ...................................................................... |
6-2 |
2. Electrical Adjustment ................................................ |
6-4 |
2-1. Servo Circuit Adjustment ....................................... |
6-4 |
2-1-1. Test Equipment and Standards Required .......... |
6-4 |
2-1-2. Location of Adjustment Points ......................... |
6-4 |
2-1-3. Switching Position Adjustment ........................ |
6-5 |
2-2. Video Circuit Relay Jig .......................................... |
6-6 |
2-2-1. Test Equipment and Standards Required .......... |
6-6 |
2-3. IF Circuit Adjustment ............................................ |
6-7E |
2-3-1. Test Equipment and Standard Required ........... |
6-7E |
2-3-2. Location of Adjustment Point ........................... |
6-7E |
2-3-3. RF AGC Adjustment ........................................ |
6-7E |
3. Test Points for Tape Path Adjustment ....................... |
6-7E |
7. EXPLODED VIEWS
7-1. |
Cabinet & Chassis Parts ......................................... |
7-1 |
7-2. |
Mechanism Parts-1 ................................................ |
7-3 |
7-3. |
Mechanism Parts-2 ................................................. |
7-5E |
8. ELECTRICAL PARTS LIST ................................. |
8-1 |
Hardware List ................................................................ |
8-10E |
– 4 –
SLV-E120AE/E220AE/UY/VP1/VP2/E270CP/VC1/VC2/E280CP/UX/VC1/VC2
SECTION 1 GENERAL
This section is extracted from SLV-E280UX instruction manual.
1-1
1-2
1-3
1-4
1-5
1-6
1-7E
SLV-E120AE/E220AE/UY/VP1/VP2/E270CP/VC1/VC2/E280CP/UX/VC1/VC2 SECTION 2
DISASSEMBLY
1-1. REMOVAL OF CABINET, MECHANISM UNIT, AND MAIN BOARD
REMOVING THE CABINET PARTS (Fig. 1-1-1 )
1.Remove the cabinet and bottom cover by removing the four screws 1 and four screws 2 .
2.Pull out the shuttle knob by fingers together with the button assembly, and remove the front panel by removing the locks of the clamps (A) using a screwdriver. etc., and slightly rotating the bottom part in the direction of the arrow.
Notes: • Electrical adjustments for the this model can be performed with only the cabinet removed.
•When replacing the bottom cover, do not tighten the screws 2 too much. Excess tightness may
damage the screw taps on the chassis.
REMOVING THE MECHANISM MAIN UNIT AND THE CP-1 PWB ASSEMBLV (Fig.1-1-2 and 1-1-3)
After removing the cabinet parts, remove the mechanism unit and the CP-1 PWB assembly connected as follows.
1.First, remove the red screw 3 of the TB-1 PWB, spread out lock clamps (B) and (C) in the arrow direction slightly and remove TM-1 PWB and TM-2 PWB as shown in Fig. 1-1-2.
2.Remove the screw 4 at the back of the chassis.
3.Remove the red screw 5 in the chassis, remove the red screw 6, and remove the holder in this order.
4.Remove the two screws 7 and two screws 8 of the mechanism unit. The two screws 8 of the cassette tray can be removed easily by pushing the tray lock lever in the arrow direction to remove the lock as shown in the enlarge view A and by pushing the lid opener lever in the arrow direction to remove the lock as shown in the enlarge view B.
5.Lift up the whole mechanism unit and main board (CP-1 PWB assembly), and as shown in Fig. 1-1-3. push the two lock clamps (D) of the chassis i n the arrow direction so that they can be removed from the chassis.
1
1 |
Cabinet |
1
1
Clamps (A)
Main Unit
Front Panel
Bottom Cover
Button Assembly |
2 |
|
Shuttle Knob |
22
2 |
Fig. 1-1-1 |
2-1
A |
Terminal Board |
7 |
|
|
5 |
|
|||
|
|
|
|
Holder |
|
|
|
|
6 |
Tray Lock Lever |
|
8 |
8 |
|
|
|
4 |
7 |
|
|
|
|
|
Lid Opener Lever |
(B) |
|
|
|
|
TM-2 PWB |
|
|
|
|
|
|
(C) |
|
|
|
(B) |
(C) |
|
B |
|
|
|
||
3 |
(C) |
|
|
|
|
|
|
|
|
|
|
(C) |
(C) |
|
|
|
(C) |
|
|
|
|
|
|
|
TM-1 PWB |
|
|
Chassis |
|
|
|
|
||
|
|
|
Cassette Tray |
|
|
|
|
|
Fig. 1-1-2 |
Mechanism Main Unit |
VP-1 PWB Assembly |
|
CP-1 PWB Assembly
TM-2 PWB
TM-1 PWB
Clamps (D)
Chassis
Fig. 1-1-3
2-2
1-2. TEMPORARILY SETTING UP AND CONNECTING CP-1 PWB ASSEMBLY
The following is an example of how to place and connect the main board without a jig, when repairing the CP-1 PWB assembly.
1.Place the mechanism unit and main board up side down as a whole on a flat surface with the foil side of the main board facing up.
CP-1 PWB Assembly (Foil side)
2.Operate the unit using the buttons on TM-1 PWB or the remote control.
Screws 9 |
Terminal Board |
Mechanism Main Unit
TM-1 PWB
Cassette Compartment
TM-2 PWB
Fig. 1-1-4
1-3. INSTALLATION OF THE FRONT PANEL
When installing the front panel to the chassis after repaires and adjustments.
1.Pressing down the door opener lever of the mechanism main unit.
2.Set the cassette door to half-opened state as shown in Fig. 1-1-5, and install the front panel to the chassis.
Note: Opened cassette door position does not install the front panel to the chassis.
Jutted part of
Cassette Holder
Front Panel
Door Opener Lever
Cassette Door
(Position A)
Cassette Door |
|
(Position B) |
Fig. 1-1-5 |
2-3 E
SLV-E120AE/E220AE/UY/VP1/VP2/E270CP/VC1/VC2/E280CP/UX/VC1/VC2 SECTION 3
DIAGRAMS
CIRCUIT BOARDS LOCATION
3 in 1 Tuner |
VP-1 PWB Assembly |
(Tuner / RF Conv.) |
CP-1 PWB Assembly
TM-2 PWB
TM-1 PWB
TM-9 PWB
3-1
SLV-E120AE/E220AE/UY/VP1/VP2/E270CP/VC1/VC2/E280CP/UX/VC1/VC2 SECTION 5
ADJUSTMENTS
1. MAINTAINING AND CHECKING THE MECHANISM
1-1. REGULAR CHECKS AND |
|
NOTE: OIL AND GREASE |
|
|
|
||||||
MAINTENANCE ITEMS |
|
|
|
|
|
||||||
|
|
• Always use the specified brands of oil and grease. If you |
|||||||||
To obtain full function and maximum performance from |
|
||||||||||
|
|
use a grease with the wrong viscosity, for example, this |
|||||||||
the set, and to stop it getting dirty or scratched, we |
|
|
can lead to all sorts of problems. Be careful to keep the |
||||||||
recommend that you carry out the following maintenance |
|
oil and grease free of dust and foreign bodies. |
|||||||||
procedures and regular checks. The maintenance checks |
• A “drop” of oil is the amount of oil remaining on the tip of |
||||||||||
described in the following section should also be carried |
|
a rod with a diameter of 1.5mm after it is dipped in oil to |
|||||||||
out without fail after carrying out any repairs to the set. |
|
|
a depth of 1cm and then taken out. |
|
|
||||||
1-1-1. REGULAR CHECKS |
|
|
|
|
|
|
|
Clean |
Check Oil |
||
|
|
|
|
|
|
|
|
|
|||
|
Hours of use (H) |
|
|
|
|
|
|
|
|
|
|
Part maintained |
500 1000 |
1500 |
2000 |
2500 |
3000 |
3500 |
4000 |
4500 |
5000 |
Remarks |
|
|
Tape guide |
|
|
|
|
|
|
|
|
|
|
|
ACE head, full erase head |
|
|
|
|
|
|
|
|
|
The life of parts varies |
Tape path Cylinder (drum) |
|
|
|
|
|
|
|
|
|
||
( ) |
( ) |
( ) |
( ) |
( ) |
( ) |
( ) |
( ) |
( ) |
enormously, depending |
||
system |
|
on the environment in |
|||||||||
Cleaner roller assembly |
which the part is used. |
||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
Pinch roller |
|
|
|
|
|
|
|
|
|
|
|
Reel table |
|
|
|
|
|
|
|
|
|
|
Drive |
Reel belt |
|
|
|
|
|
|
|
|
|
|
system |
Relay gear, Pulley shaft, Gear shaft |
|
|
|
|
|
|
|
|
|
|
|
Loading motor |
|
|
|
|
|
|
|
|
|
|
|
Back tension |
|
|
|
|
|
|
|
|
|
Playback tension torque: |
|
|
|
|
|
|
|
|
|
|
30 to 50g/cm |
|
Perform- |
Brake system |
|
|
|
|
|
|
|
|
|
|
ance |
|
|
|
|
|
|
|
|
|
|
FWD: 600g/cm or over |
checks |
FWD, REW, PLAY torque, |
|
|
|
|
|
|
|
|
|
REW: 600g/cm or over |
|
|
|
|
|
|
|
|
|
PLAY (SP mode): |
||
|
REV torque |
|
|
|
|
|
|
|
|
|
80 to I 40g/cm |
|
|
|
|
|
|
|
|
|
|
REV: 120 to 220g/cm |
|
1-1-2. CLEANING
1. Cylinder (Drum) (See Fig.1-1-1 )
Moisten a chamois with methyl alcohol and clean the video head (including the Hi-Fi audio head) and the tape path surface of the cylinder. Be sure to wipe horizontally in relation to the video head. If you wipe vertically, or use excessive force, you can damage the video head.
2. Tape Path System / Reel Drive System
Clean the pinch roller, the capstan shaft, the tape guides, the FE head, the ACE head, the reel table, the pulley and the reel belt with a soft cloth, or chamois, moistened with methyl alcohol.
Cylinder 
(Drum)
Tape path surface |
Video head |
Fig.1-1-1
5-1
1-2. SERVICE TOOLS
1-2-1. SERVICE TOOLS
NOTES ON ALIGNMENT TAPES
Select a PAL or NTSC alignment tape from the list below, according to the transmission system of the VCR you are repairing.
PAL: For models with 625 scanning lines and a field frequency of 50Hz NTSC: For models with 525 scanning lines and a field frequency of 60Hz
No. |
Tool |
|
Tool No. |
Remarks |
|||
|
|
|
|
||||
|
NTSC |
|
PAL |
||||
|
|
|
|
|
|||
1 |
Alignment tape |
|
VHJ-0005 |
VHJ-0008 |
SP colour bar 1kHz (normal) |
||
2 |
Alignment tape |
|
VHJ-0006 |
VHJ-0009 |
SP monoscope 7kHz (normal) |
||
3 |
Alignment tape |
|
VHJ-0007 |
|
–––––––– |
EP monoscope |
|
4 |
Alignment tape |
|
–––––––– |
|
VHJ-0052 |
LP monoscope |
|
5 |
Eccentric screw driver |
|
VHJ-0003 |
Used to adjust the tape path |
|||
6 |
Nut box |
|
VHJ-0048 |
Used to adjust the height of the |
|||
|
lever load assembly |
||||||
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
7 |
Torque dial gauge |
|
VHJ-0004 |
Used to measure reel winding |
|||
|
torque |
||||||
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
8 |
Cassette torque meter |
|
VHJ-0016 |
Used to measure back tension |
|||
|
torque |
||||||
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
9 |
Load lever assembly height adjustment tool |
VHJ-0102 |
Used to adjust the height of the |
||||
load lever assembly |
|||||||
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
10 |
Torque gauge screwdriver |
|
VHJ-0014 |
Used to adjust the tightening torque |
|||
|
of screws |
||||||
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
11 |
3 mm dia. bit for torque screwdriver |
VHJ-0045 |
Used to replace the bit of the torque |
||||
gauge screwdriver |
|||||||
|
|
|
|
|
|
||
|
|
|
|
|
|||
12 |
Video head removing tool |
|
VHJ-0041 |
Used to remove the upper cylinder |
|||
13 |
Oil |
|
VHJ-0099 |
|
|||
14 |
Grease |
|
VHJ-0100 |
|
|||
15 |
Grease |
|
VHJ-0101 |
|
|||
16 |
Relay cables |
|
VHJ-0106 |
Relay cables of mechanism and |
|||
|
CP-1 PWB assembly |
||||||
|
|
|
|
|
|
||
VHJ-0005, VHJ-0006, VHJ-0007 |
VHJ-0003 |
|
VHJ-0048 |
VHJ-0004 |
|||
No. 1, 2, 3, 4 |
No. 5 |
No. 6 |
No. 7 |
VHJ-0016 |
VHJ-0102 |
VHJ-0014 |
VHJ-0045 |
No. 8 |
No. 9 |
No. 10 |
No. 11 |
VHJ-0041 |
VHJ-0099 |
VHJ-0100, VHJ-0101 |
VHJ-0106 |
No. 12 |
No. 13 |
No. 14, 15 |
No. 16 |
Fig.1-2-1 |
5-2
1-2-2. Using the Relay Cable (VHJ-0106)
The mechanism can be repaired without using the relay cable (VHJ-0106). As shown in Fig. 1-3-1, the relay cable (VHJ-0106) is a tool used for relay between the CP-1 PWB assembly and mechanism unit.
When connecting it, take note of the pin number of the connector.
NOTE 1: Do not place the mechanism upright as shown in Fig. 1-3-1 when inserting/ejecting the cassette.
NOTE 2: For NTSC models, be sure to connect the VM-1 PWB assembly and CP-1 PWB assembly.
VM-1 (VP-1) PWB assembly
|
Relay cable: |
|
VHJ-0106 |
CP-1 PWB assembly |
Mechanism unit |
Fig. 1-2-2
2. AN OVERVIEW OF THE MECHANISM
2-1. NAMES OF THE MAIN PARTS
2-1-1. CASSETTE MECHANISM ASSEMBLY
Stand L
|
Release lever |
Tray lock |
Lid opener spring |
spring |
|
Pinion gear
Under frame 
Lock gear Door opener 
lever
Gear holder
Drive gear
Fig. 2-1-1
5-3
2-1-2. TOPVIEW
Cleaner roller assembly Capstan brake assembly
Cleaner lever |
Audio R/P head assembly |
|
Cylinder (Drum) |
(ACE head) |
|
|
Capstan motor |
|
Cylinder mounting |
|
|
Guide roller assembly |
Pinch roller lever assembly |
|
|
||
|
Pinch lift cam |
|
T incline mounting assembly |
Pinch lift mounting |
|
|
||
|
Front rack gear |
|
Full erase head |
Opener mounting |
|
S incline mounting assembly |
Pinch cam gear |
|
|
||
Guide roller assembly |
Start rack gear |
|
Load lever assembly |
||
Tape end sensor |
||
Tape top sensor |
||
|
BT lever assembly
L guide act lever assembly
Tape sensor LED
BT spring
Band brake assembly
Supply reel assembly
T soft brake assembly
S soft lever
EP switch
Take-up reel assembly
|
S brake |
T brake act slide |
T reel gear |
EP sw lever |
|
||
|
|
assembly |
|
|
T brake assembly |
Clutch mounting assembly |
|
S reel gear |
||
|
Fig. 2-1-2
2-1-3. UNDERSIDE
|
|
Cylinder earth |
Reel belt |
Capstan motor |
assembly |
Stator
Rotor
Harness mounting
T load gear
S load gear
Pinch cam gear
Crescent mounting
T load lever assembly
Mode switch (S8001)
|
|
|
|
S load lever assembly |
|
Brake control lever |
|
|
|
BT spring lever assembly |
|
Main cam |
|
|
|
|
|
Clutch change lever |
|
|
|
MC-1 PWB assembly |
|
|
|
|
|
||
Crescent slide |
|
|
|
|
|
|
|
Brake act lever |
Reel pulley |
|
|
Wheel gear 2 |
Wheel gear 1 |
assembly |
S brake act slide |
||
|
|||||
|
|
|
|
||
|
Worm gear assembly |
|
Friction gear assembly |
||
|
|
Loading motor assembly |
|||
Fig. 2-1-3
5-4
2-2. AN OVERVIEW OF THE MECHANISM MODES
2-2-1 . MECHANISM MODE SWITCHING TABLE
NOTE: The letters and figures enclosed in circles in the mechanism mode column are the codes on the crescent slide.
HEX |
Mechanism mode |
|
The principal mode-switching states of the mechanism |
||||||||
DATA |
|
||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
EJECT E |
|
|
|
|
|
|
|
|
|
|
6 |
|
|
|
|
|
|
CASSETTE OUT |
|
|||
Distinguished by whether the |
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
(EJECT) |
|
|||
|
EP switch is ON or OFF. |
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
Horizontal shift section. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Vertical shift section. |
|
|
|
|
|
|
|
|
|
|
2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
IN REW |
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
||||
|
IN REW R |
|
(SHORT REW) |
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
7 |
INITIAL 7 |
|
|
|
|
|
|
|
INITIAL |
|
|
|
|
|
|
|
|
|
|
||||
|
|
|
|
|
|
(POWER OFF) |
|
||||
|
|
|
|
|
|
|
|||||
|
|
|
|
|
|
|
|
|
|
|
|
0 |
Cleaner roller assembly: ON |
When loading is carried out starting at |
|||||||||
1 |
S/T mounting incline assembly |
the CASSETTE IN position |
|||||||||
|
pressure begins. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
0S/T mounting incline assembly pressure ends.
1 |
|
|
|
|
REVIEW |
|
|
|
|
|
|
|
|
|
REVIEW 1 |
|
|
|
|
|
0 |
|
|
|
|
|
|
2 |
IDLER pos. 2 |
|
|
|
|
|
(Pinch roller OFF) |
|
|
|
|
|
|
|
|
|
|
|
|
|
0 |
|
|
|
|
|
|
3 |
STILL/SLOW 3 |
|
|
|
|
STILL/SLOW |
|
|
|
|
|
||
|
|
|
|
|
|
|
0 |
|
|
|
|
|
|
5 |
PLAY/STOP 5 |
REC PAUSE |
REC |
STOP |
P LAY |
CUE |
0 |
|
|
|
|
|
BRAKE pos. 4 |
|
|
|
4 |
|
|
|
|
0 |
|
|
|
|
6 |
FF/REW 6 |
|
|
|
REW |
|
FF |
||
|
|
|
||
|
|
|
|
|
MODE SWITCH OUTPUT TABLE
HEX |
|
SW DATA |
SW DATA 2 |
||
|
|
|
|
|
|
DATA |
1 |
X |
Y |
Z |
|
|
|
|
|
|
|
0 |
5.0V |
H |
H |
H |
5V |
|
|
|
|
|
|
1 |
5.0V |
H |
H |
L |
0V |
|
|
|
|
|
|
2 |
2.5V |
H |
L |
H |
5V |
|
|
|
|
|
|
3 |
2.5V |
H |
L |
L |
0V |
|
|
|
|
|
|
4 |
3.4V |
L |
H |
H |
5V |
|
|
|
|
|
|
5 |
3.4V |
L |
H |
L |
0V |
|
|
|
|
|
|
6 |
2.0V |
L |
L |
H |
5V |
|
|
|
|
|
|
7 |
2.0V |
L |
L |
L |
0V |
|
|
|
|
|
|
APPEARANCE OF MODE SWITCH AND RELATIONSHIP BETWEEN MODE POSITIONS
FF/REW EJECT BRAKE
CASSETTE IN
IN REW PLAY/STOP
STILL/SLOW |
INITIAL |
IDLER
REVIEW
Fig. 2-2-1
5-5
2-2-2. MOVEMENT CHECK LIST FOR THE MAIN PARTS OF THE MECHANISM
(S): Strength (W): Weakness
Mechanism mode
Principal parts
T brake assembly
S brake assembly
T soft brake assembly
S soft lever
BT lever assembly
BT spring
Pinch roller lever assembly
Clutch mounting assembly
Load lever assembly
Capstan brake assembly
S and T incline mounting assembly
Cleaner roller assembly
EJECT |
IN REW |
INITIAL (POWER OFF) |
(LOADING) |
(UNLOADING) |
REV |
IDLER |
STILL/SLOW |
PLAY/STOP |
BRAKE |
FF/REW |
OFF |
OFF |
ON |
ON |
ON |
OFF |
OFF |
OFF |
OFF |
ON |
ON/OFF |
OFF |
OFF |
OFF |
OFF |
OFF |
OFF |
OFF |
OFF |
OFF |
ON |
ON/OFF |
OFF |
OFF |
OFF |
ON |
ON |
ON |
ON |
OFF |
OFF |
OFF |
OFF |
ON |
ON |
ON |
ON |
ON |
OFF |
OFF |
OFF |
OFF |
OFF |
OFF |
OFF |
OFF |
OFF |
OFF |
OFF |
ON |
ON |
ON |
ON |
ON |
ON |
OFF |
OFF |
OFF |
OFF |
OFF |
ON(W) |
ON(W) |
ON(S) |
ON(S) |
ON(S) |
ON(W) |
UP |
UP |
UP |
UP/ |
DOWN/ |
ON |
OFF |
ON |
ON |
OFF |
OFF |
DOWN |
UP |
|||||||||
PLAY |
PLAY |
PLAY |
PLAY |
PLAY |
PLAY |
PLAY |
PLAY |
PLAY |
PLAY |
FF |
UNLO |
UNLO |
UNLO |
LO |
LO |
LO |
LO |
LO |
L |
LO |
LO |
OFF |
OFF |
OFF |
OFF |
OFF |
OFF |
OFF |
ON |
OFF |
OFF |
OFF |
|
|
|
LO |
UNLO |
|
|
|
|
|
|
OFF |
OFF |
OFF |
(ON) |
(ON) |
OFF |
OFF |
OFF |
OFF |
OFF |
OFF |
|
|
|
|
|
|
|
|
|
|
|
2-2-3. HOW TO CHECK THE MECHANISM MODE POSITION
You can tell which mode the mechanism is currently in by looking at the codes and marking-lines on the crescent slide on the underside of the mechanism chassis. The edge of the crescent mounting is used as the reference line, as shown in Fig.2-2-2, and the marking-lines and symbols indicating the mechanism modes are displayed on the crescent slide, which slides against the edge of the crescent mounting. The mechanism mode is read off from the marking-line on the slide crescent which is aligned with the reference-line on the crescent mounting. Example: In Fig.2-2-2, marking-line 6 is aligned with the reference-line on the crescent mounting , so the mechanism is seen to be in FF/REW mode.
2-2-4. SELF-DIAGNOSIS DISPLAY
Some models are equipped with the SELF-DIAGNOSIS DISPLAYS function.
Use it as a means of finding out the symptoms and cause of the error before performing repairs.
For details, refer to the separate service manual for the respective models.
The edge of the crescent mounting is the reference-line
Crescent slide 
Crescent mounting
6: FF/REW
4: BRAKE
5: PLAY/STOP 3: STILL/SLOW 2: IDLER
1: REVIEW
7: INITIAL (POWER OFF)
E: EJECT
Fig. 2-2-2
5-6
Loading...