Macintosh Performa 5400 General Maintenance: Difference between revisions

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~~[[File:Performa5400_Interior.jpg|thumb|Performa 5400 interior view]]~~

Proper maintenance is essential to extending the lifespan and ensuring reliable operation of your '''Macintosh Performa 5400''' series computer. The following sections provide guidance on routine maintenance and common failure points.

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* Use compressed air to remove dust from the logic board, power supply, and CD-ROM drive

* Pay special attention to the CRT neck board and flyback area

* Clean the floppy drive heads with a cleaning disk or isopropyl alcohol

* Clean the floppy drive heads with a cleaning disk or isopropyl alcohol. The drive is a 1.4 MB Apple SuperDrive, which is '''direct drive''' — there is no belt to check or replace<ref name="ss54" />

=== External and CRT Cleaning ===

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== PRAM Battery Handling ==

==~~= Best Practices ===~~

The Performa 5400 uses a '''4.5 V battery pack on a two-pin connector''', not the half-AA

lithium cell found in most Macintoshes of the period. Apple's ''Battery Replacement'' figure

labels it a Rayovac computer clock battery, and the symptom charts for the closely related

6200/6300 print the step as "Unplug '''4.5 V''' battery".<ref name="ss54">Apple Computer, Inc., ''Power Macintosh/Performa 5400 and 5500 Series Service Source'': Basics → Configurations; Specifications; Troubleshooting → Symptom Charts; Additional Procedures → Battery Verification and Battery Replacement; Adjustments → Geometry and High Voltage; Exploded View. Hosted on this wiki as [[:File:Powermac.perf 5400.5500.pdf]].</ref><ref name="ss62">Apple Computer, Inc., ''Performa 6200/6300 Series Service Source'', Troubleshooting → Symptom Charts, where the same step is printed as "Unplug 4.5 <strong>V</strong> battery" — which is what establishes that the number is a voltage rather than one of Apple's section cross-references. Hosted on this wiki as [[:File:Performa 6200.6300.pdf]].</ref>

* The Performa 5400 uses a 4.~~5V alkaline~~ battery

Reaching it means removing the '''I/O door and the logic board''' — it is not accessible

* Battery is located on the ~~logic board near~~ the ~~RAM slots~~

from outside the chassis.<ref name="ss54" />

* Replace the battery every ~~3–5~~ years or when ~~settings are lost~~

* Always use a quality replacement battery

=== Apple's own check ===

# Set the voltmeter to the 10 V DC scale.

# Hold the positive probe to the positive end of the battery and the negative probe to the negative end.

# '''If the battery voltage is below 3.0 V, replace the battery.'''<ref name="ss54" />

'''3.0 V is Apple's published threshold for this machine.''' Apple gives no replacement

interval at all, so a fixed "every three to five years" is somebody's guess rather than a

specification. Replace on measurement, or when the machine starts losing its date and

startup-disk setting.

=== Cleaning Battery Leakage ===

* ~~If battery~~ has leaked~~, remove immediately~~

The pack is alkaline, so vinegar is the correct neutraliser here. It is the wrong treatment

* ~~Clean affected area~~ with white vinegar ~~to neutralize alkaline residue~~

on the lithium cells used by most other Macintoshes of the period.

* Follow with isopropyl alcohol ~~cleaning~~

* Inspect nearby traces ~~for corrosion damage~~

* Remove the pack immediately if it has leaked

* ~~Test affected components after cleaning~~

* Neutralise alkaline residue with white vinegar, then clean with isopropyl alcohol

* Inspect nearby traces under magnification and check continuity

* See [[Battery Explosion, Capacitor or Corrosion Damage]] for the full procedure

== Connector and Socket Corrosion ==

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=== Power Supply ===

The ~~Performa 5400~~ power supply ~~can fail due to~~:

The power supply is a separate, orderable assembly from the analogue/video board — Apple

lists '''661-0930''' (or '''661-0331''' with a thermal connector) for Rev. A and

'''661-1117''' for Rev. B, with the analogue/video board assembly as '''661-0928''' (Rev. A)

or '''661-1356''' (Rev. B). They are not one board and they are not interchangeable across

revisions.<ref name="ss54" />

Symptoms that point at the supply rather than the analogue board:

* Dried or leaking electrolytic capacitors

* Failed solder joints on high-current paths

* ~~Degraded thermal compound on voltage regulators~~

* A machine that will not start from the rear power switch at all (Apple's symptom chart sends "system does not start up" to a logic board reset, then the power supply)<ref name="ss54" />

Apple's chart sends a machine that '''will''' start from the rear switch but '''not''' from

the keyboard to the '''analogue board''', not the power supply — as it does a machine that

restarts itself after Shut Down.<ref name="ss54" />

=== Capacitor Health ===

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=== CD-ROM Drive ===

The ~~internal CD~~-~~ROM~~ drive ~~commonly fails with age:~~

The 5400 ships with a tray-loading AppleCD 600i, an AppleCD 1200i or a 12× drive depending on

configuration.<ref name="ss54" />

* Clean the laser lens with isopropyl alcohol

* ~~Lubricate~~ the ~~tray~~ mechanism ~~if sticky~~

* Apple's own remedy for a drive that will not read is to clean it and then replace the mechanism; there is no published component-level repair

* Replace the drive if laser is ~~weak or dead~~

=== CRT Issues ===

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* Processor socket (if removable on upgrade cards)

== ~~Voltage Checks~~ ==

== High-voltage adjustment ==

This chassis is one of the few Macintoshes for which Apple publishes a real voltage

adjustment with a real tolerance. The 5400 shares its power supply and analogue/video board

part numbers with the [[Macintosh Performa 5200CD General Maintenance|Performa 5200/5300]],

and the procedure is identical.<ref name="ss54" />

{{Warning|The analogue board carries mains-derived and CRT voltages, and the CRT stores

charge. Discharge the CRT first — see [[CRT Discharge Procedure]] — and use a plastic

adjustment tool. Metal alignment tools are a shock hazard and Apple says so explicitly.}}

# Let the monitor run for at least '''10 minutes'''.

# Run Display Service Utility and display the '''crosshatch''' test pattern.

# Locate diode '''D713''' (Rev. A) or '''D703''' (Rev. B) on the analogue board.

# Red voltmeter lead to the '''cathode''' of that diode; black lead to the metal chassis ground.

# With a fine-tip plastic tool, set '''VR501''' (Rev. A) or '''VR702''' (Rev. B) until the meter reads '''29.5 V DC ± 0.1 V'''.

Apple requires this adjustment whenever the CRT or the deflection board is replaced.<ref name="ss54" />

The geometry controls are on a '''different''' board — the CRT video board carries VR301 to

VR305, VR601, VR701 and the three-position horizontal centring switch SW701, all reached from

the neck of the tube. Do not confuse them with the high-voltage control.<ref name="ss54" />

== Power supply specification ==

Apple's electrical specification:<ref name="ss54" />

~~Use a multimeter to verify power supply output~~:

* '''Line voltage:''' 100–240 VAC

* '''Frequency:''' 47–63 Hz

* '''Power:''' 125 W

* '''Surge voltage:''' 300 V RMS for 100 ms

* '''Peak inrush current:''' 40 A peak

* '''Current:''' 2.5 A maximum for all line and load conditions

* '''Power:''' 220 W maximum for all line and load conditions

* '''+~~5V rail:'''~~ 4.~~85V – 5~~.~~15V~~

'''The rail table "+5 V 4.85–5.15 V, +12 V 11.9–12.7 V, +3.3 V 3.2–3.4 V" does not belong to

* '''~~+12V rail:~~''' ~~11.9V –~~ 12.7V

this machine.''' The first two lines are Apple's '''Macintosh Plus''' adjustment procedure —

* '''+3.3V rail~~:''' 3~~.~~2V – 3~~.4V

genuine there, with test cable 077-0135 and an upper bound of 12.75 V — transplanted onto

machines that have no such procedure. No source of any kind has been found for the +3.3 V

line. Apple publishes no per-rail tolerance and no power-supply adjustment for the 5400; the

29.5 V high-voltage adjustment above is the only one it documents.

~~Measure at the logic board power connector with the system powered on.~~

== References ==

== Related Maintenance Pages ==

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* [[CRT Discharge Procedure]]

[[Category:Apple Vintage Computers]]

[[Category:Apple Maintenance Guides]]

@@ Line 1: / Line 1: @@
-[[File:Performa5400_Interior.jpg|thumb|Performa 5400 interior view]]
 Proper maintenance is essential to extending the lifespan and ensuring reliable operation of your '''Macintosh Performa 5400''' series computer. The following sections provide guidance on routine maintenance and common failure points.
@@ Line 10: / Line 9: @@
 * Use compressed air to remove dust from the logic board, power supply, and CD-ROM drive
 * Pay special attention to the CRT neck board and flyback area
-* Clean the floppy drive heads with a cleaning disk or isopropyl alcohol
+* Clean the floppy drive heads with a cleaning disk or isopropyl alcohol. The drive is a 1.4 MB Apple SuperDrive, which is '''direct drive''' — there is no belt to check or replace<ref name="ss54" />
 === External and CRT Cleaning ===
@@ Line 27: / Line 26: @@
 == PRAM Battery Handling ==
-=== Best Practices ===
+The Performa 5400 uses a '''4.5 V battery pack on a two-pin connector''', not the half-AA
+lithium cell found in most Macintoshes of the period. Apple's ''Battery Replacement'' figure
+labels it a Rayovac computer clock battery, and the symptom charts for the closely related
+/6300 print the step as "Unplug '''4.5 V''' battery".<ref name="ss54">Apple Computer, Inc., ''Power Macintosh/Performa 5400 and 5500 Series Service Source'': Basics &rarr; Configurations; Specifications; Troubleshooting &rarr; Symptom Charts; Additional Procedures &rarr; Battery Verification and Battery Replacement; Adjustments &rarr; Geometry and High Voltage; Exploded View. Hosted on this wiki as [[:File:Powermac.perf 5400.5500.pdf]].</ref><ref name="ss62">Apple Computer, Inc., ''Performa 6200/6300 Series Service Source'', Troubleshooting &rarr; Symptom Charts, where the same step is printed as "Unplug 4.5 <strong>V</strong> battery" &mdash; which is what establishes that the number is a voltage rather than one of Apple's section cross-references. Hosted on this wiki as [[:File:Performa 6200.6300.pdf]].</ref>
-* The Performa 5400 uses a 4.5V alkaline battery
+Reaching it means removing the '''I/O door and the logic board''' — it is not accessible
-* Battery is located on the logic board near the RAM slots
+from outside the chassis.<ref name="ss54" />
-* Replace the battery every 3–5 years or when settings are lost
-* Always use a quality replacement battery
+=== Apple's own check ===
+# Set the voltmeter to the 10 V DC scale.
+# Hold the positive probe to the positive end of the battery and the negative probe to the negative end.
+# '''If the battery voltage is below 3.0 V, replace the battery.'''<ref name="ss54" />
+'''3.0 V is Apple's published threshold for this machine.''' Apple gives no replacement
+interval at all, so a fixed "every three to five years" is somebody's guess rather than a
+specification. Replace on measurement, or when the machine starts losing its date and
+startup-disk setting.
 === Cleaning Battery Leakage ===
-* If battery has leaked, remove immediately
+The pack is alkaline, so vinegar is the correct neutraliser here. It is the wrong treatment
-* Clean affected area with white vinegar to neutralize alkaline residue
+on the lithium cells used by most other Macintoshes of the period.
-* Follow with isopropyl alcohol cleaning
-* Inspect nearby traces for corrosion damage
+* Remove the pack immediately if it has leaked
-* Test affected components after cleaning
+* Neutralise alkaline residue with white vinegar, then clean with isopropyl alcohol
+* Inspect nearby traces under magnification and check continuity
+* See [[Battery Explosion, Capacitor or Corrosion Damage]] for the full procedure
 == Connector and Socket Corrosion ==
@@ Line 58: / Line 71: @@
 === Power Supply ===
-The Performa 5400 power supply can fail due to:
+The power supply is a separate, orderable assembly from the analogue/video board — Apple
+lists '''661-0930''' (or '''661-0331''' with a thermal connector) for Rev. A and
+'''661-1117''' for Rev. B, with the analogue/video board assembly as '''661-0928''' (Rev. A)
+or '''661-1356''' (Rev. B). They are not one board and they are not interchangeable across
+revisions.<ref name="ss54" />
+Symptoms that point at the supply rather than the analogue board:
 * Dried or leaking electrolytic capacitors
 * Failed solder joints on high-current paths
-* Degraded thermal compound on voltage regulators
+* A machine that will not start from the rear power switch at all (Apple's symptom chart sends "system does not start up" to a logic board reset, then the power supply)<ref name="ss54" />
+Apple's chart sends a machine that '''will''' start from the rear switch but '''not''' from
+the keyboard to the '''analogue board''', not the power supply — as it does a machine that
+restarts itself after Shut Down.<ref name="ss54" />
 === Capacitor Health ===
@@ Line 72: / Line 95: @@
 === CD-ROM Drive ===
-The internal CD-ROM drive commonly fails with age:
+The 5400 ships with a tray-loading AppleCD 600i, an AppleCD 1200i or a 12× drive depending on
+configuration.<ref name="ss54" />
 * Clean the laser lens with isopropyl alcohol
-* Lubricate the tray mechanism if sticky
+* Apple's own remedy for a drive that will not read is to clean it and then replace the mechanism; there is no published component-level repair
-* Replace the drive if laser is weak or dead
 === CRT Issues ===
@@ Line 90: / Line 113: @@
 * Processor socket (if removable on upgrade cards)
-== Voltage Checks ==
+== High-voltage adjustment ==
+This chassis is one of the few Macintoshes for which Apple publishes a real voltage
+adjustment with a real tolerance. The 5400 shares its power supply and analogue/video board
+part numbers with the [[Macintosh Performa 5200CD General Maintenance|Performa 5200/5300]],
+and the procedure is identical.<ref name="ss54" />
+{{Warning|The analogue board carries mains-derived and CRT voltages, and the CRT stores
+charge. Discharge the CRT first — see [[CRT Discharge Procedure]] — and use a plastic
+adjustment tool. Metal alignment tools are a shock hazard and Apple says so explicitly.}}
+# Let the monitor run for at least '''10 minutes'''.
+# Run Display Service Utility and display the '''crosshatch''' test pattern.
+# Locate diode '''D713''' (Rev. A) or '''D703''' (Rev. B) on the analogue board.
+# Red voltmeter lead to the '''cathode''' of that diode; black lead to the metal chassis ground.
+# With a fine-tip plastic tool, set '''VR501''' (Rev. A) or '''VR702''' (Rev. B) until the meter reads '''29.5 V DC ± 0.1 V'''.
+Apple requires this adjustment whenever the CRT or the deflection board is replaced.<ref name="ss54" />
+The geometry controls are on a '''different''' board — the CRT video board carries VR301 to
+VR305, VR601, VR701 and the three-position horizontal centring switch SW701, all reached from
+the neck of the tube. Do not confuse them with the high-voltage control.<ref name="ss54" />
+== Power supply specification ==
+Apple's electrical specification:<ref name="ss54" />
-Use a multimeter to verify power supply output:
+* '''Line voltage:''' 100–240 VAC
+* '''Frequency:''' 47–63 Hz
+* '''Power:''' 125 W
+* '''Surge voltage:''' 300 V RMS for 100 ms
+* '''Peak inrush current:''' 40 A peak
+* '''Current:''' 2.5 A maximum for all line and load conditions
+* '''Power:''' 220 W maximum for all line and load conditions
-* '''+5V rail:''' 4.85V – 5.15V
+'''The rail table "+5 V 4.85–5.15 V, +12 V 11.9–12.7 V, +3.3 V 3.2–3.4 V" does not belong to
-* '''+12V rail:''' 11.9V – 12.7V
+this machine.''' The first two lines are Apple's '''Macintosh Plus''' adjustment procedure —
-* '''+3.3V rail:''' 3.2V – 3.4V
+genuine there, with test cable 077-0135 and an upper bound of 12.75 V — transplanted onto
+machines that have no such procedure. No source of any kind has been found for the +3.3 V
+line. Apple publishes no per-rail tolerance and no power-supply adjustment for the 5400; the
+.5 V high-voltage adjustment above is the only one it documents.
-Measure at the logic board power connector with the system powered on.
+== References ==
+<references />
 == Related Maintenance Pages ==
@@ Line 107: / Line 165: @@
 * [[CRT Discharge Procedure]]
+{{Navbox-AppleVintage|state=collapsed}}
 [[Category:Apple Vintage Computers]]
 [[Category:Apple Maintenance Guides]]

Macintosh Performa 5400 General Maintenance: Difference between revisions

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