Question about Technics SL-1210 Turntable

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What are the grounding procedures that i have to follow ??

What are the proper grounding handling procedures to check any malfunction on the TT? specifically in the case of the on/off switch has to be replaced because it wont start? even if the ligths and everything else in properly working ...

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If you have power to the unit, all you have to do is unplug it from it's power source. Wait a few minutes, to allow any circuits to drain, and you'll be good to go. No need to ground yourself, as if you were working on a PC. You won't even go near any PCB (printed circuit board) components, so no need to worry about static discharge.

If you have power, and it just wont spin, then more than likely it's the Start/Stop switch that has gone bad (Part #S601) - You can PURCHASE THE PART HERE. You will need to de-solder the old power switch and replace with the new. You will also need to take your turntable apart from the bottom in order to accomplish this. Disassembly instructions are located here. However, if you have no experience with electronics, I would suggest taking this to a local service tech for repairs.

Good luck!

- Davis

Posted on Jul 02, 2008


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2003 malibu engine revs unexpectadly and then slows down while driving and while sitting still. Only happens once in awhile. What would cause this?

The first thing to do would be have it hooked up to a scan tool . check for DTC'S an look at the engine data for the sensors , to see if one is out of specifications . A crankshaft sensor , mass air flow sensor could cause this. Yours has two crank sensors . an a cam sensor !
This is from GM factory service information !
Symptoms - Engine Controls
Important Preliminary Checks Before Starting
Before using the Symptom tables, use the following:
Perform Diagnostic System Check - Engine Controls and verify all of the following items:

Clear the DTCs.

Ensure that the scan tool data is within normal operating range. Refer to Scan Tool Data List .

Verify the customer's complaint.

Perform the Visual and Physical Check in this section.

Locate the correct symptom in the list at the end of this section. Follow the procedures in the appropriate diagnostic table. If the condition can not be duplicated, or is determined to be intermittent, refer to Intermittent Conditions .
Visual/Physical Check
Notice: Use the connector test adapter kit J 35616-A for any test that requires probing the following items:
The PCM harness connectors

The electrical center fuse/relay cavities

The component terminals

The component harness connector

Using this kit will prevent damage caused by the improper probing of connector terminals.
Several of the symptom procedures call for a careful inspection. This can lead to correcting a condition without further tests and can save valuable time. This inspection should include the following areas:
Inspect the PCM grounds for being clean, tight, and in their proper location. Refer to Master Electrical Component List and Power and Grounding Connector End Views in Wiring Systems.

Inspect the vacuum hoses for splits, kinks, and proper connections, as shown on Vehicle Emission Control Information label. Inspect thoroughly for any type of leak or restriction. Refer to Emission Hose Routing Diagram .

Inspect the air intake ducts for being collapsed, damaged areas, looseness, improper installation, or leaking, especially between the mass air flow (MAF) sensor and the throttle body.

Inspect for air leaks at throttle body mounting area, MAF sensor and intake manifold sealing surfaces.

Inspect the wiring harness for poor connections, pinches, cuts, or other damage.

Inspect for loose, damaged, or missing sensors/components.

Use the following tables when diagnosing a symptom complaint
Hard Start


Lack of Power, Sluggishness, or Sponginess

Detonation/Spark Knock

Hesitation, Sag, Stumble

Cuts Out, Misses

Poor Fuel Economy

Poor Fuel Fill Quality

Rough, Unstable, or Incorrect Idle and Stalling

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Engine Cranks but Does Not Run

Malfunction Indicator Lamp (MIL) Inoperative

Malfunction Indicator Lamp (MIL) Always On

I would not think the cruse control , is the light on when it does it ?

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Tests/Procedures: 1. Check the power and ground at the master switch mount in the dash. Pin 12 is power at key on and pin 4 is the ground.

2. Next try driving the left front window by applying power to pins 13 and 14, switch polarity should drive the window up and down. If not, check for broken wires in the between "A" pillar and the door, then gain access to the window motor and try applying right at the motor.
Tests/Procedures: 1. Check the outside door handle switch. It should ground the Orange/Yellow wire when the handle is raised. Tech Tips: The power window should drop slightly whenever the door is opened. The ensures a tighter seal to the convertible top.

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you may have a bad switch ! i could tell you how to test it ,but could be fairly lengthy . do you own a volt meter ? do you know how to use one? should also check for dtc's in transfer case control module !
transfer case shift control switch indicator inoperative - one or more
the indicator lamps circuit consist of 5 individual lamps contained inside the mode/range switch assembly. the following lamps are contained inside the respective range button:
auto 4wd




each time the ignition is cycled, all 5 mode indicators light simultaneously, as an indicator check to ensure proper operation of the indicators. when the ignition is on, the transfer case shift control module illuminates the indicator lamp that corresponds to the current atc gear position, by providing a ground through a current limiting driver.
the transfer case shift control module flashes each indicator lamp after a shift has been requested and continues to flash until the transfer case shift control module completes the shift.
a solid state circuit, located inside the switch, supplies ignition voltage to the lamps. the solid state circuit also receives voltage when the headlamp switch is in the parklamp or headlamp position. when the solid state circuit receives voltage from the headlamp switch, the circuit reduces the voltage that is supplied to the indicator lamps, dimming the lamps when the headlamps are on.
test description
the numbers below refer to the step numbers on the diagnostic table.

  1. this step tests the transfer case electrical control of the lamp circuits.

  2. this step helps determine module failures.

  3. this step tests the affected lamp circuit for an open or high resistance.

  4. this step tests the lamp feed circuit for an open or short to ground.

these diagnostic procedures will help you to find and repair automatic transfer case (atc) system malfunctions. this service category also contains information for repairing atc system malfunctions. for best results, use the diagnostic tables and follow the sequence listed below:
  1. perform the diagnostic system check - transfer case. all atc diagnostics must begin with the diagnostic system check - transfer case. the diagnostic system check - transfer case determines the following:
  2. ?€¢
    proper service 4wd indicator operation

    ability of the transfer case shift control module to communicate through the data link connector (dlc)

    existence of atc dtcs

  3. refer to the diagnostic table as directed by the diagnostic system check - transfer case. the diagnostic tables help enable you to diagnose any atc system malfunction. bypassing these procedures may result in the following:
  4. ?€¢
    extended diagnostic time

    incorrect diagnosis

    incorrect parts replacement

  5. repeat the diagnostic system check - transfer case after you perform any repair or diagnostic procedure. this will verify that you correctly performed the repair. this will also ensure that other malfunctions do not exist.

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I have a 2007 Yamaha TT-R50 and when I turn the handle bars to the left it revs up really high. Then when I turn it to the right it shuts off. If I keep the handle bars straight, it idles just fine. Any...

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Xerox Phaser 7700 displays error 7-276

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An abnormal AD value was detected from the Tray 3 Paper Size Sensor.
Refer to BSD: CH7.4 CH7.13A
Set Tray 3 in the machine.
Between Tray Module PWB J548-11 (3T: J548-11 , TT: J548-11) (+) GND (-)
Is the voltage the same as that in the Tray 3 Paper Size Sensor Output Table inscribed in BSD: CH7.4?
Yes No
Between Tray 3 Paper Size Sensor J820-2 (3T: J820-2 TT: J820-2 ) (+) GND (-)
Is the voltage the same as that in the Tray 3 Size Sensor Output Table inscribed in BSD: CH7.4?
Yes No
Between Tray 3 Paper Size Sensor J820-1 (3T: J820-1 TT: J820-1 ) (+)J820-3 (3T: J820-3 TT: J820-3) (-)
Is the voltage +5VDC?
Yes No
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(WN 7.3.6 +5VDC-2)
Check for malfunctioning paper guide, poor contact caused by bending in the projection that pushes the switch, and
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PWB J548-11 (3T: J548-11, TT: J548-11)
Change the following parts successively:
MCU PWB (PL13.1)
ESS PWB (PL13.1 ).

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