Text preview for : 3.PDF part of Samsung SV-A12G VCR and players Samsung SV-A12G, SV-A12P, SVR-17C
(service manual)
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2. Reference Information
2-1 Servicing Jigs and Special Tools
2-1-1 Servicing guide
1. For this VCP chassis, the program switch and the 4. The X-5 chassis jig can be used for the following :
sensors (start/end/reel) are located on the main
PCB, not on the deck assÕy. 1) When repairing or confirming the operation of the
deck assÕy.
2. As long as the deck assÕy is connected to the main 2) When replacing or repairing the components
PCB, all repairs are possible. located under the deck assÕy.
Important : In order to repair the main PCB 3) When repairing the function PCB.
without the deck assÕy connected, the X-5 chassis
jig should be used. 5. The X-5 chassis jig can not be used for the
following :
3. To emulate the function of the sensors, plug the
power cord to outlet with pressing SW711 on the 1) Repairing defects in the video section.
function PCB. 2) Repairing defects in the audio section.
3) If the defect is related to tape speed.
Note : Accurate repair may not be possible due to
external noise between the deck assÕy and
main PCB.
2-1-2 Servicing Jig
Jig Item Part No. Use
X-5 Chassis Jig 68140-500-013 Connects the deck ass'y to the main PCB connecting cable.
Samsung Electronics 2-1
Reference Information
2-1-4 How to Connect X-5 chassis jig
1. Unplug the power cord from AC outlet. 3. To emulate the function of the sensors, plug the
power cord to outlet with pressing SW711 on the
2. Remove the deck assÕy from main PCB (See Page function PCB (See diagram below).
4-4 of service manual).
The location of SVC OPTION(SW711) is same
on the function PCB regardless of model.
Function (Component side)
Note : After completing repairs, unplug and plug the power cord in order to reset.
4. Insert wafers of drum motor, capstan motor and 8. Simultaneously touch the start and end sensor
loading motor on X-5 chassis jig into each of the LEDs on the PCB, so that the tape loads
connectors of deck assÕy, and then secure with automatically. After the tape is loaded, all of the
three screws. function buttons on the function PCB can be
used.
5. Solder the 3 leads of the jig cable to ÒSERVICE
OPTIONÓ on the main PCB. 9. If the test tape is ejected while the jig is in use,
attempt to re-load the tape by simultaneously
6. Apply power to the function PCB. touching the start and end sensor LEDs.
7. Insert a test tape into the housing assÕy.
2-2 Samsung Electronics
Reference Information
How to Connect X-5 chassis jig CONNECTS TO THE MAIN PCB CN604.
CONNECTS TO THE MAIN PCB SVC OPTION.
CONNECTS TO THE DRUM MOTOR
CONNECTOR OF DECK ASS'Y.
CONNECTS TO THE
MAIN PCB CN606.
CONNECTS TO THE MAIN PCB CN601.
CONNECTS TO THE CAPSTAN MOTOR
CONNECTOR OF DECK ASS'Y.
CONNECTS TO THE LOADING MOTOR CONNECTOR OF DECK ASS'Y.
DECK ASS'Y
MAIN BOARD
CN604
SVC
OPTION
CN606
CN601
1 SCREW (1-3X10)
2 SCREWS (2-3X10)
Samsung Electronics 2-3
Reference Information
2-2 IC Blocks
2-2-1 IC601 (KS88C8016)
2-4 Samsung Electronics
Reference Information
2-2-2 IC301 (SS11511M)
Samsung Electronics 2-5
Reference Information
2-2-3 IC302 (LA7411)
2-6 Samsung Electronics
Reference Information
2-2-4 IC303 (SS23377M)
Samsung Electronics 2-7
Reference Information
MEMO
2-8 Samsung Electronics