Casio RZ-1 Service Manual
Complete Casio RZ-1 service manual with schematics and parts list, featuring high image quality and legible schematics. Instantly available direct download in PDF/JPG form.
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Casio RZ-1 CPU Replacement
The NEC uPD7811 8-bit microcomputer within the Casio RZ-1 contains 4K of custom code which makes it a traditionally non-replaceable part, as the only known source of 100% identical CPUs are those harvested from other RZ-1 units. This guide outlines a method for replacing a dead RZ-1 7811 CPU with … Continue reading
Casio RZ-1 Power Supply Repair
This article discusses PSU diagnosis/troubleshooting and covers general power supply operation for the Casio RZ-1. This section of the RZ-1 has voltage that can damage property and injure or kill living creatures. PLEASE TAKE THE PROPER SAFETY PRECAUTIONS! From the wall outlet, AC voltage goes into the RZ-1 3-prong IEC … Continue reading
Casio RZ-1 Custom Firmware
By using the methods outlined in a previous Casio RZ-1 firmware hacking article, a new operating system has been developed for the Casio RZ-1 with the following features: ON-THE-FLY PATTERN SWITCHING DURING PLAYBACK In pattern play mode, any other pattern can be selected during playback and it will be queued … Continue reading
Casio RZ-1 ROM Hacking Masterclass
Note: It is advisable to reference the prior companion article on Casio RZ-1 PCM sound ROM hacking for thorough understanding. An augmentation to standard sound ROM hacking is EPROM bank switching. This method provides selection of four different kits on-the-fly instead of having to physically swap out single kit chips … Continue reading
