NEC JC-4301P3A / APC-H4311: Difference between revisions

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# Remove four corner screws holding rear of case to front of monitor
# Remove four corner screws holding rear of case to front of monitor
# Gently slide the rear of the case backwards. May need spludger to initially loosen.
# Gently slide the rear of the case backwards. May need spludger to initially loosen.
# Four screws to remove rear access panel
# Four screws to remove rear access panel shielding
# Three screws, one on each side panel and one near flyback, to remove top chassis/shielding  
# Three screws, one on each chassis side panel and one near flyback, to remove top chassis/shielding
# Two screws, one on each chassis side panel, to remove rear chassis/shileding
# Undo screws holding joint switching regulator and interface board assembly and disconnect leads before sliding assembly upwards<br />
# Undo screws holding joint switching regulator and interface board assembly and disconnect leads before sliding assembly upwards<br />
== Original Parts ==
== Original Parts ==
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|}
|}


=== PWE-110 Interface ===
=== PWE-110 Interface Board ===
'''Capacitor [[Capacitor Specifications|Specifications]] and  [[Part Footprints|Footprint]] Information'''
'''Capacitor [[Capacitor Specifications|Specifications]] and  [[Part Footprints|Footprint]] Information'''
{| class="wikitable sortable"
{| class="wikitable sortable"
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!Series
!Series
|-
|-
|C819
|1
|1 uF
|50
|Through hole
|5
|12
|
|
|
|Rubycon
|
|-
|C820
|1
|2.2 uF
|50
|
|
|
|
|
|
|
|
|-
|C812, C813, C829
|3
|10 uF
|16
|
|
|
|
|
|
|
|
|
|
|Nichicon
|
|-
|C806, C827
|2
|47 uF
|16
|
|
|
|
|
|
|Matsushita
|
|-
|C805
|1
|47 uF
|16
|
|
|
|
|
|
|Rubicon
|
|-
|C804
|1
|47 uF
|16
|
|
|
|
|
|
|Nichicon
|
|-
|C832
|2
|100 uF
|10
|
|
|
|
|
|
|
|
|-
|C801
|1
|100 uF
|16
|
|
|
|
|
|
|Rubycon
|
|-
|C815
|1
|220 uF
|10
|
|
|
|
|
|
|Nichicon
|
|-
|C810
|1
|220 uF
|16
|
|
|
|
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|}
|}


=== PWE-142 Switching Regulator ===
=== PWE-142 Switching Regulator Board ===
{| class="wikitable sortable"
{| class="wikitable sortable"
|+Capacitor [[Capacitor Specifications|Specifications]] and  [[Part Footprints|Footprint]] Information
|+Capacitor [[Capacitor Specifications|Specifications]] and  [[Part Footprints|Footprint]] Information
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!Series
!Series
|-
|-
|C664
|1
|1 uF
|160
|
|
|
|
|0 °C
|
|Rubicon
|
|-
|C609, C615
|2
|4.7 uF
|50
|
|
|
|
|
|
|United/Chemicon
|
|-
|C621, C620
|2
|22 uF
|50
|
|
|
|
|
|
|United/Chemicon
|
|-
|C654
|1
|100 uF
|35
|
|
|
|
|
|
|United/Chemicon
|
|-
|C653
|1
|100 uF
|100
|
|
|
|
|
|
|
|
|-
|C658, C662, C657
|3
|100 uF
|160
|
|
|
|
|
|
|
|
|-
|C611, C617
|2
|220 uF
|16
|
|
|
|
|
|
|
|
|-
|C651
|1
|330 uF
|100
|
|
|
|
|
|
|
|
|-
|C610, C616
|2
|470 uF
|16
|
|
|
|
|
|
|
|
|-
|C652
|1
|470 uF
|35
|
|
|
|
|
|
|
|
|-
|
|
|
|
|
|
|
|
|
|
|
|
|-
|
|
|
|
|
|
|0 µF
|
|
|
|
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|
|
|
|
|0 °C
|
|
|
|

Revision as of 12:59, 26 November 2024

For more information, see this article's corresponding Wikipedia page: Monitor.
This device is in the WorkNeeded:OriginalParts category because it was flagged as missing information on the original parts. It may have replacement parts listed but those cannot be assumed to be identical to the originals. If you have a list of the original parts, please feel free to add them by copying the relevant table from EditorsToolbox:Tables
This device is in the WorkNeeded:ReplacementParts category because it was flagged as missing information on replacement parts. If it has the original parts listed you may be able to search for replacements using the parametric searches available from parts distributors. If you have or make a list of replacement parts, please feel free to add them by copying the relevant table from EditorsToolbox:Tables
Preliminary Information
Release Year 1985
Leak Risk High
Batteries None
Mounting Technology Through hole
Capacitor Types Aluminium Electrolytic, ceramic
Destructive Entry No
Hardware Specifications
Display Interface DE-9 female connector, with switch for TTL or analog input, switch for automatic or manual input setting and DIP switches for colour palette size
CRT Guides
General Information · Repair Cautions

https://en.wikipedia.org/wiki/Multisync_monitor

The JC-4101P3A is perhaps the first true multisync monitor. The APC-H4311 appears to be exactly the same monitor but with a model number to match the NEC APC IV PowerMate 1 desktop system unit it was paired with.

Known Issues

Symptom or Problem Encountered

Causes

  • Electrolytic capacitor failures due to normal aging.

Solutions

  • Replace electrolytic capacitors

Disassembly Notes

  1. Unplug power and data cables
  2. Turn rotating part of base through 180 degrees and slide off
  3. Remove fixed part of base by removing two screws
  4. Remove four corner screws holding rear of case to front of monitor
  5. Gently slide the rear of the case backwards. May need spludger to initially loosen.
  6. Four screws to remove rear access panel shielding
  7. Three screws, one on each chassis side panel and one near flyback, to remove top chassis/shielding
  8. Two screws, one on each chassis side panel, to remove rear chassis/shileding
  9. Undo screws holding joint switching regulator and interface board assembly and disconnect leads before sliding assembly upwards

Original Parts

There are a number of different boards found in the monitor

Purpose Designation Notes
Switching Reg PWE-107 (JC-1401P3A, 120V)

PWE-142 (APC-H4311, 240V Australia?)

Different boards, appears to depend on supply country voltage.
Interface PWE-110
Deflection PWE-105
Control PWE-125A
LED PWE-125B
Video PWE-122
CRT PWE-123
Tube 370HYB22-TC126 (PN2) May differ, depending on...?

PWE-110 Interface Board

Capacitor Specifications and Footprint Information

RefDes Qty Capacitance Voltage Mount Diameter/Size Height Lead Spacing Temp Type Brand Series
C819 1 1 uF 50 Through hole 5 12 Rubycon
C820 1 2.2 uF 50
C812, C813, C829 3 10 uF 16 Nichicon
C806, C827 2 47 uF 16 Matsushita
C805 1 47 uF 16 Rubicon
C804 1 47 uF 16 Nichicon
C832 2 100 uF 10
C801 1 100 uF 16 Rubycon
C815 1 220 uF 10 Nichicon
C810 1 220 uF 16

PWE-142 Switching Regulator Board

Capacitor Specifications and Footprint Information
RefDes Qty Capacitance Voltage Mount Diameter/Size Height Lead Spacing Temp Type Brand Series
C664 1 1 uF 160 0 °C Rubicon
C609, C615 2 4.7 uF 50 United/Chemicon
C621, C620 2 22 uF 50 United/Chemicon
C654 1 100 uF 35 United/Chemicon
C653 1 100 uF 100
C658, C662, C657 3 100 uF 160
C611, C617 2 220 uF 16
C651 1 330 uF 100
C610, C616 2 470 uF 16
C652 1 470 uF 35

Replacement Parts

Basic PCB Name

Capacitors
RefDes Qty Compatible Part Number Order Links
Digikey

If parts are not available or different selection is preferred, you can use the values in the Original Parts section to perform a parametric search.

Related Links

References

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