Apple ImageWriter II/L

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This device is in the WorkNeeded:General category because it was flagged as missing general information about the device. The information may be incomplete, using default text, or inaccurate and should be verified with external sources if possible. If you can add or correct information on this page, please feel free to edit it and do so.

Apple ImageWriter II/L

Preliminary Information
Release Year	1990
Leak Risk	High
Mounting Technology	Through Hole, SMD
Capacitor Types	Aluminum Electrolytic, Tantalum, Ceramic, Polymer
Destructive Entry	No

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Known Issues

Sagging voltage on the +26VDC rail will cause the steppers to fail to move the carriage properly, which generates an error on startup.

Disassembly Notes

The entire carriage and printer assembly removes as a single unit for access to the power supply.

Original Parts

Logic Board

Capacitor Specifications and Footprint Information

RefDes	Qty	Capacitance	Voltage	Mount	Diameter/Size	Height	Lead Spacing	Temp	Type	Brand	Series
C1		680 µF	10V	Through Hole Radial				85 °C	Aluminum Electrolytic	Marcon	CE-DS (equivalent to Jamicon SK)
C2		680 µF	10V	Through Hole Radial				85 °C	Aluminum Electrolytic	Marcon	CE-DS (equivalent to Jamicon SK)
C3		220 µF	35V	Through Hole Radial				85 °C	Aluminum Electrolytic	Marcon	CE-DS (equivalent to Jamicon SK)
C4		100 µF	35V	Through Hole Radial				85 °C	Aluminum Electrolytic	Marcon	CE-GS (equivalent to Jamicon SK)
C5		100 µF	10V	Through Hole Radial				85 °C	Aluminum Electrolytic	Marcon	CE-SS (Equivalent to Teapo SS)
C6		1 µF	50V	Through Hole Radial				85 °C	Aluminum Electrolytic	Marcon	CE-SS (equivalent to Teapo SS)
C7		680 µF	10V	Through Hole Radial				85 °C	Aluminum Electrolytic	Marcon	CE-DS (equivalent to Jamicon SK)
C8		680 µF	10V	Through Hole Radial				85 °C	Aluminum Electrolytic	Marcon	CE-DS (equivalent to Jamicon SK)
C30		100 µF	10V	Through Hole Radial				85 °C	Aluminum Electrolytic	Marcon	CE-SS (equivalent to Teapo SS)
C31		0.33 µF	50V	Through Hole Radial				85 °C	Aluminum Electrolytic	Marcon	CE-SS (equivalent to Teapo SS)

Power Supply

Power supply has three voltage rails:

• +5VDC - primary logic rail
• -5VDC - used for RS-422 serial
• +26VDC - used for driving stepper motors

Capacitor Specifications and Footprint Information

RefDes	Qty	Capacitance	Voltage	Mount	Diameter/Size	Height	Lead Spacing	Temp	Type	Brand	Series
C5		560 µF	200 WV	Through Hole Radial	30 mm	30 mm	10 mm	105 °C	Electrolytic	Nichicon	GK(m)
C7		10 µF	250 V	Through Hole Radial	10 mm	16 mm	5 mm	105 °C	Aluminum Electrolytic	Nichicon	PR(m)
C16		6800 µF	10 V	Through Hole Radial	16 mm	26 mm	7 mm	85 °C	Aluminum Electrolytic	Nichicon	VX(m)
C18		470 µF	10 V	Through Hole Radial	10 mm	15 mm	7 mm	85 °C	Aluminum Electrolytic	Nichicon	VZ(m)
C19		47 µF	25 V	Through Hole Radial	5 mm	15 mm	7 mm	85 °C	Aluminum Electrolytic	Nichicon	VZ(m)
C20		100 µF	16 V	Through Hole Radial	5 mm	15 mm	7 mm	85 °C	Aluminum Electrolytic	Nichicon	VZ(m)
C22		2200 µF	40 V	Through Hole Radial	16 mm	32 mm	7 mm	105 °C	Aluminum Electrolytic	Nichicon	VZ(m)
C23		2200 µF	40 V	Through Hole Radial	16 mm	32 mm	7 mm	105 °C	Aluminum Electrolytic	Nichicon	VZ(m)

Power Supply Connector Pinout

1. Ground
2. +5VDC
3. -5VDC
4. Ground
5. +26VDC

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

• Image Writer II/L Service Manual