TF/TZ 800-Series Magazine & Cartridge Subsystem Service Manual

This service manual, intended for Digital Services engineers, describes how to service the TF/TZ 800-Series Magazine and Cartridge Tape Subsystems (including TF85/TF86/TF857/TF867 and TZ85/TZ86/TZ857/TZ867 models).

Key areas covered include:

• Overview: Product descriptions, hardware components (loader transfer assembly, rear chassis), operating modes (OCP Disabled, Automatic, Manual, Service), and technical specifications.
• Operating Procedures: Details on using the operator control panel (OCP) for cartridge loading/unloading, magazine handling, and power-on self-test (POST) processes.
• Local Programs and Utilities: Instructions on accessing and using diagnostic programs like DIRECT, HISTRY, PARAMS, DRVEXR, DRVTST, and LDRTST for troubleshooting and parameter configuration.
• Troubleshooting: Guidance on identifying and resolving various error conditions, including nondetectable FRU failures, magazine/loader faults, power problems, and cartridge motion faults.
• FRU Removal and Replacement: Procedures for replacing Field Replaceable Units (FRUs) such as the controller module (including a "warm swap" procedure), loader transfer assembly, tape drive, operator control panel, fan, and interlock switch, along with lists of recommended spares.
• Diagnostic Utilities and Tests: Comprehensive descriptions of POST procedures and various functional microdiagnostic and SCSI level tests for both TF and TZ series drives to verify functionality and isolate faults.
• Firmware Update Procedures: Steps for installing firmware updates for TF85x and TZ85x subsystems using the Firmware Update Program (FUP) utility.
• Appendices: Provide information on EVMDA tape drive exerciser tests, head cleaning procedures, and error log interpretations.