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2. Reference Information
2-1 Servicing Jigs and Special Tools
2-1-1 Servicing guide
1. For this VCR chassis, the program switch and the sensors (start/end/reel) are located on the main PCB, not on the deck assÕy. 2. As long as the deck assÕy is connected to the main PCB, all repairs are possible. Important : In order to repair the main PCB without the deck assÕy connected, the X-5 chassis jig should be used. 3. To emulate the function of the sensors, connect a jumper or solder land (two point) at service option(W750) on the function-timer PCB. 4. The X-5 chassis jig can be used for the following : 1) When repairing or confirming the operation of the deck assÕy. 2) When replacing or repairing the components located under the deck assÕy. 3) When repairing the function PCB. 5. The X-5 chassis jig can not be used for the following : 1) Repairing defects in the video section. 2) Repairing defects in the audio section. 3) If the defect is related to tape speed. Note : 1) Repair may not be possible if there is external noise between the deck assÕy and main PCB. 2) If tape control signal is not connected to the jig, the VCR must be operated in SP mode.
2-1-2 Servicing Jig
Jig Item X-5 Chassis Jig Part No. 68140-500-013 Use Connects the deck ass'y to the main PCB connecting cable.
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2-1
Reference Information
2-1-4 How to Connect X-5 chassis jig
1. Unplug the power cord from AC outlet. 2. Remove the deck assÕy from main PCB (See Page 4-5 of service manual). 3. To emulate the function of the sensors, place a jumper or solder land (two point) at service option(W750) on the function-timer PCB. (see diagram below).
SV-A20XK/SV-200X SV-A21XK/SV-201X SV-A30XK/SV-203X
Function-Timer (Component side)
SV-A40XK/SV-205X
Function-Timer (Component side) Note : After completing repairs, SW715 on the function PCB in order to reset. 4. Insert wafers of drum motor, capstan motor and loading motor on X-5 chassis jig into each of the connectors of deck assÕy, and then secure with three screws. 5. Solder the 3 leads of the jig cable to ÒCN605Ó on the main PCB. 6. Apply power to the function PCB. 7. Insert a test tape into the housing assÕy. 8. Simultaneously touch the start and end sensor LEDs on the PCB, so that the tape loads automatically. After the tape is loaded, all of the function buttons on the function PCB can be used. 9. If the test tape is ejected while the jig is in use, attempt to re-load the tape by simultaneously touching the start and end sensor LEDs. If the tape still does not load, reset the function PCB by pressing SW715.
2-2
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Reference Information
How to Connect X-5 chassis jig
CONNECTS TO THE ASS'Y MAIN CN604.
CONNECTS TO THE ASS'Y MAIN CN605.
CONNECTS TO THE DRUM MOTOR CONNECTOR OF ASS'Y FULL DECK. CONNECTS TO THE ASS'Y MAIN CN603.
CONNECTS TO THE ASS'Y MAIN CN601.
CONNECTS TO THE CAPSTAN MOTOR CONNECTOR OF ASS'Y FULL DECK.
CONNECTS TO THE LOADING MOTOR CONNECTOR OF ASS'Y FULL DECK.
ASS'Y FULL DECK
ASS'Y MAIN
CN604 CN605 CN603 CN601
1 SCREW (1-3X10) 2 SCREWS (2-3X10)
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2-2 IC BLOCK
2-2-1 IC601 (HD6473977)
2-4
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2-2-2 IC301 (SS11501M)
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2-2-3 IC302 (LA7411)
2-6
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2-2-4 IC303 (SS23478M)
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2-7
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2-2-5 IC401 (TDA9800)
2-8
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2-2-6 IC801 (KA8119)
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MEMO
2-10
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