Difference between revisions of "Technics PE II"

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(McMaster)
Line 31: Line 31:
 
Pressure gauge:
 
Pressure gauge:
  
* PS/DVM
+
*PS/DVM
* PDR-C-1A
+
*PDR-C-1A
  
=== 2020-5-06 ===
+
=== Previous ===
Resuming repair effort. The story so far:
+
Summary
  
* Came with bad pressure gauge
+
*Came with bad pressure gauge
** Tried to order replacement but seller sent wrong part
+
**Tried to order replacement but seller sent wrong part
** Second replacement installed
+
**Second replacement installed
** Think it worked? Needs to be checked out
+
**Think it worked? Needs to be checked out
* Pressure gauge was likely bypassed
+
*Pressure gauge was likely bypassed
* Missing manifold valve
+
*Missing manifold valve
** Replacement ordered but not installed
+
**Replacement ordered but not installed
  
 +
===2020-5-06===
  
Today:
+
Summary:
  
* Clear area around it
+
*Clear area around it
** Put Ron back up
+
**Put Ron back up
* Order lazy susan
+
*Order lazy susan
 +
*Vacuum gauge controller is bad
 +
**Modified and in bad state: repairs may be difficult
 +
**Looking to source identical replacement or something new entirely
  
  
 
Vacuum gauge
 
Vacuum gauge
  
* Rewired with colored wires + better connections
+
*Rewired with colored wires + better connections
* Still reading bad
+
*Still reading bad
** Negative reading (switch center)
+
**Negative reading (switch center)
** Low setpoint can be set (switch left)
+
**Low setpoint can be set (switch left)
** High setpoint can not be set (switch right). Shows same negative value as center
+
**High setpoint can not be set (switch right). Shows same negative value as center
* Opened gauge
+
*Opened gauge
** Loose/missing cover screws
+
**Loose/missing cover screws
** Several wires have been desoldered
+
**Several wires have been desoldered
** Diode is hanging loose
+
**Diode is hanging loose
** Bad state. Probably not worth further troubleshooting
+
**Bad state. Probably not worth further troubleshooting
** Try to source replacement identical module, or find another gauge with low/high set points
+
**Try to source replacement identical module, or find another gauge with low/high set points
  
 
<br />
 
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Revision as of 05:09, 7 May 2020

A popular unit. A number of people have this or similar including:

  • John McMaster
  • Markus
  • Sam Z


Specifications:

  • Parallel plate 15" chamber
  • Microprocessor controller
  • 11" electrode
  • Power?
  • 500 Watt @ 30Khz
    • Other source says 300W @ 13.56 MHz
  • Three gas system
  • Wafers
    • 4 4"
    • One 5-8"
  • Weight
    • System: 120 lb
    • Module: 30 lb
    • Pump (which?): 100 lb


https://www.chiphistory.org/274-technics-pe-ii-a-planar-etcher


McMaster

Pressure gauge:

  • PS/DVM
  • PDR-C-1A

Previous

Summary

  • Came with bad pressure gauge
    • Tried to order replacement but seller sent wrong part
    • Second replacement installed
    • Think it worked? Needs to be checked out
  • Pressure gauge was likely bypassed
  • Missing manifold valve
    • Replacement ordered but not installed

2020-5-06

Summary:

  • Clear area around it
    • Put Ron back up
  • Order lazy susan
  • Vacuum gauge controller is bad
    • Modified and in bad state: repairs may be difficult
    • Looking to source identical replacement or something new entirely


Vacuum gauge

  • Rewired with colored wires + better connections
  • Still reading bad
    • Negative reading (switch center)
    • Low setpoint can be set (switch left)
    • High setpoint can not be set (switch right). Shows same negative value as center
  • Opened gauge
    • Loose/missing cover screws
    • Several wires have been desoldered
    • Diode is hanging loose
    • Bad state. Probably not worth further troubleshooting
    • Try to source replacement identical module, or find another gauge with low/high set points