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

From Caps Wiki
Jump to navigation Jump to search
VisualWikitext
(Added images)
mNo edit summary
 
(4 intermediate revisions by the same user not shown)
Line 30: Line 30:
# Three screws, one on each chassis 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/shielding.
# Two screws, one on each chassis side panel, to remove rear chassis/shielding.
# Undo screws holding joint switching regulator and interface board assembly and disconnect supply lead, degaussing coil lead and C and K leads before sliding assembly upwards.<br />
# Undo screws holding switching regulator and interface board assembly and disconnect supply lead, degaussing coil lead and C and K leads from the regulator board and four different control/data leads on the interface board before sliding assembly upwards.<br />


== Images ==
== Images ==
[[File:APC-H4311 Rear.jpg|alt=This image shows the rear view of the monitor, including power switch, TTL/Analog switch, DIP switches and DE-9 connector|thumb|APC-H4311 Rear view]]
[[File:APC-H4311 Rear.jpg|alt=This image shows the rear view of the monitor, including power switch, TTL/Analog switch, DIP switches and DE-9 connector|thumb|APC-H4311 Rear view|left]]
[[File:APC-H4311 Controls.jpg|alt=This image shows the controls located on the top of the monitor, including, brightness, contrast, horizontal and vertical hold adjustments.|thumb|APC-H4311 top panel controls]]
[[File:APC-H4311 Controls.jpg|alt=This image shows the controls located on the top of the monitor, including, brightness, contrast, horizontal and vertical hold adjustments.|thumb|APC-H4311 top panel controls|center]]
.
.


== Original Parts ==
== Original Parts ==
Line 171: Line 173:
|(M)105C
|(M)105C
|Electrolytic
|Electrolytic
|United/Chemicon
|Chemicon
|KM
|KM
|-
|-
Line 211: Line 213:
|(M)85C
|(M)85C
|Electrolytic
|Electrolytic
|United/Chemicon
|Chemicon
|71 ?
|71 ?
Z(2) ?
Z(2) ?
Line 236: Line 238:
|1 uF
|1 uF
|160
|160
|
|TH
|
|
|
|
|
|
|0 °C
|0 °C
|
|Electrolytic
|Rubicon
|Rubicon
|
|SH
|-
|-
|C609, C615
|C609, C615
Line 249: Line 251:
|4.7 uF
|4.7 uF
|50
|50
|TH
|
|
|
|
|
|
|
|
|
|Electrolytic
|
|Chemicon
|United/Chemicon
|
|
|-
|-
Line 262: Line 264:
|22 uF
|22 uF
|50
|50
|TH
|
|
|
|
|
|
|
|
|
|Electrolytic
|
|Chemicon
|United/Chemicon
|
|
|-
|-
Line 275: Line 277:
|100 uF
|100 uF
|35
|35
|TH
|
|
|
|
|
|
|
|(M) 105C
|
|Electrolytic
|
|Chemicon
|United/Chemicon
|
|
|-
|-
Line 288: Line 290:
|100 uF
|100 uF
|100
|100
|TH
|
|
|
|
|
|
|
|(M) 105C
|
|Electrolytic
|
|Chemicon
|
|KMC
|
72
L(2)
|-
|-
|C658, C662, C657
|C658, C662, C657
Line 301: Line 305:
|100 uF
|100 uF
|160
|160
|TH
|
|
|
|
|
|
|
|105C
|
|Electrolytic
|
|Rubycon
|
|SH
|
51
|-
|-
|C611, C617
|C611, C617
Line 314: Line 319:
|220 uF
|220 uF
|16
|16
|TH
|
|
|
|
|
|
|
|
|
|Electrolytic
|
|
|
|
|
Line 327: Line 332:
|330 uF
|330 uF
|100
|100
|TH
|
|
|
|
|
|
|
| -55-+105C
|
|Electrolytic
|
|Rubycon
|
|
|
|-
|-
Line 340: Line 345:
|470 uF
|470 uF
|16
|16
|TH
|
|
|
|
|
|
|
|(M) 105C
|
|Electrolytic
|
|Chemicon
|
|
|
|-
|-
Line 353: Line 358:
|470 uF
|470 uF
|35
|35
|TH
|
|
|
|
|
|
|
|(M) 105C
|
|Electrolytic
|
|
|
|
|
|-
|-
|
|C605
|
|1
|
|220 uF
|
|400
|
|TH
|
|35
|
|40
|
|15
|
|105C
|
|Electrolytic
|
|Nippon Chemicon
|
|KM
|-
|-
|
|
Line 416: Line 421:
[[Category:WorkNeeded:ReplacementParts]]
[[Category:WorkNeeded:ReplacementParts]]
[[Category:Computer Monitor]]
[[Category:Computer Monitor]]
[[Category:WorkNeeded:General]]
[[Category:1980s]]
[[Category:1980s]]

Latest revision as of 00:04, 27 November 2024

For more information, see this article's corresponding Wikipedia page: https://en.wikipedia.org/wiki/Multisync_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

Full CRT description can be found here https://crtdatabase.com/crts/nec/nec-jc-1401p3a

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

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. The caps lists below created from the APC-H4311 (240V, 50Hz) version with a manufacturing date of June 1987

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 spudger 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/shielding.
  9. Undo screws holding switching regulator and interface board assembly and disconnect supply lead, degaussing coil lead and C and K leads from the regulator board and four different control/data leads on the interface board before sliding assembly upwards.

Images

This image shows the rear view of the monitor, including power switch, TTL/Analog switch, DIP switches and DE-9 connector
APC-H4311 Rear view
This image shows the controls located on the top of the monitor, including, brightness, contrast, horizontal and vertical hold adjustments.
APC-H4311 top panel controls

. .

Original Parts

There are a number of different boards found in the monitor

Purpose Designation Notes
Switching Reg PWE-107 (JC-1401P3A, 120V, 60Hz)

PWE-142 (APC-H4311, 240V, 50Hz, 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 board PWE-123
Tube 370HYB22-TC126 (PN2), as found in APC-H4311 model May differ?

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 TH 5 12 5 85C Electrolytic Rubycon CE W ?

M3441 ?

C820 1 2.2 uF 50 TH 5 12 5 85C Electrolytic Rubycon CE W ?

M856 ?

C812, C813, C829 3 10 uF 16 TH 5 11 5 85C Electrolytic Nichicon A8716 ?

SE (M) ?

C806, C827 2 47 uF 16 TH 6 12 5 85C Electrolytic Matsushita S
C805, C804 2 47 uF 16 TH 6 12 5 -55-+105C Electrolytic Rubicon PS-1 (?)
C832 2 100 uF 10 TH 6 11 5 (M)105C Electrolytic Chemicon KM
C801 1 100 uF 16 TH 8 11 5 85C Electrolytic Rubycon CE W ?

M552

C815 1 220 uF 10 TH 8 12 5 85C Electrolytic Nichicon SE(M) ?
C810 1 220 uF 16 TH 9 12 5 (M)85C Electrolytic Chemicon 71 ?

Z(2) ?

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 TH 0 °C Electrolytic Rubicon SH
C609, C615 2 4.7 uF 50 TH Electrolytic Chemicon
C621, C620 2 22 uF 50 TH Electrolytic Chemicon
C654 1 100 uF 35 TH (M) 105C Electrolytic Chemicon
C653 1 100 uF 100 TH (M) 105C Electrolytic Chemicon KMC

72 L(2)

C658, C662, C657 3 100 uF 160 TH 105C Electrolytic Rubycon SH

51

C611, C617 2 220 uF 16 TH Electrolytic
C651 1 330 uF 100 TH -55-+105C Electrolytic Rubycon
C610, C616 2 470 uF 16 TH (M) 105C Electrolytic Chemicon
C652 1 470 uF 35 TH (M) 105C Electrolytic
C605 1 220 uF 400 TH 35 40 15 105C Electrolytic Nippon Chemicon KM

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

Full CRT description can be found here https://crtdatabase.com/crts/nec/nec-jc-1401p3a

Service manual can be found here https://ia803403.us.archive.org/28/items/nec-jc-1401-p-3-a/NEC%20JC-1401P3A.pdf

References

Retrieved from "https://caps.wiki/index.php?title=NEC_JC-4301P3A_/_APC-H4311&oldid=5503"