Power Base-1 & 460CSL Amplifier Service Manual

Module Information

MODULE HISTORY

Since its introduction in 1986, the PB-1 has gone through a number of updates and revisions. Over the course of its history some of these changes have resulted in upgrading to newer modules. What follows is a historical breakdown of PB-1 modules. It should also be noted that the 460CSL was introduced in 1992 and therefor modules obsoleted before that time were never used in the CSL version.

OUTPUT MODULES:

Q42576-1

Original output module. No longer available.

Q42661-1

Through hole output module. No longer available. Q42718-9

Output module: 4 resistor small predriver. PB-1 Only. Last output module for PB-1 for use with TO-220 package driver transistors.

Q42885-6

TO-3P Driver Output module. Not for use in THC units, not retrofittable into TO-220 driver transistor units. Q42967-2

THC Output module with TO-3P drivers. Not retrofittable to any older units. Does not require special main module for THC ODEP recompensation. Also im- proved bias stability.

Q43200-7

THC #2 Output Module. Replaces Q42967-2 only. Electrically identical, but larger screw head plates prevent shorting which could occur with the first THC output module.

MAIN MODULES:

Q42552A0

This was the original main board. It offered 2 front end gain stages and was also used in the PB-1, MT-600/ LX, MT-1200/LX. It did not include ground lift, but did offer a choice of .775V or 26 dB voltage gain sensitivi- ties. No longer available.

Q42664-5

Service replacement for Q42552A0 for PB-1. No longer available.

Q42682-7

Main #2. Upgraded board from Q42552A0 for PB-1. No longer available.

Q42776-7

Universally usable PC board, finished module used in MT-600/1200, MA-600/1200, and PB-1. Added third gain stage and ground lift switch. For use in the PB-1 install two level pots (C 7409-3) and remove R187 and R287. Can replace all older modules. Use this module to replace this or any previous module. This module can also be used to replace the Q42953-2 module put into production later. Note that if this module is being used to replace an older module, you may have to slide the ground lift switch to the left (ground lift position) and clip off the plastic switch protrusion in order for the module to properly fit in the unit.

Q42953-2

PB-1 main module to replace Q42776-7. This or the Q42776-7 module may be used with TO-3P driver transistor output modules, and with or without Through Hole Chassis (THC) in this amplifier.

Q43060-5

THC main module built on D 7993-5 circuit board. On this module the boost circuit has been deleted, the third position (1.4V) is added to the Sensitivity Switch, and additional fault circuitry has been added to the module. Although it is possible to modify any older unit to accept this module, it is recommended that the Q42776-7 be used to replace main modules in all older units, and this module be used only as a replacement for itself.

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Crown 460CSL service manual Module Information, Module History, Output Modules, Main Modules
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460CSL specifications

The Crown 460CSL is a powerful combination of innovation and performance that redefines efficiency in the material handling industry. Designed for heavy-duty tasks, this electric lift truck offers an impressive range of features that cater to the demands of modern warehouses and distribution centers.

One of the standout characteristics of the Crown 460CSL is its advanced ergonomic design, which prioritizes operator comfort and productivity. The spacious operator compartment is designed to minimize fatigue during extended use, featuring a low step-in height for easy access and a fully adjustable seat that provides optimal support. The intuitive controls are positioned for easy reach, allowing operators to maneuver the lift truck with ease and precision.

At the heart of the Crown 460CSL is its robust AC motor technology. This powerful motor provides rapid acceleration and smooth operation, reducing both energy consumption and maintenance needs. The regenerative braking system helps to extend battery life by converting braking energy back into stored energy, making the lift truck more efficient during operations. Operators benefit from enhanced traction and stability, ensuring dependable performance on various surfaces.

The Crown 460CSL boasts industry-leading lifting capabilities, with a maximum lifting capacity often exceeding competitors. Its precision-engineered mast allows for smooth and steady lifting of heavy loads, while its advanced hydraulic system provides reliable control over load placement. The lift’s extended height options enable operators to handle tasks at varying elevations, from ground level to tall shelving systems, with confidence.

Safety is a top priority for Crown, and the 460CSL incorporates several features designed to protect both operators and the loads being handled. The truck is equipped with a comprehensive suite of safety features, including an integrated stability system, load monitoring capabilities, and a visibility-enhancing overhead guard. These features work together to provide operators with greater awareness of their surroundings, reducing the risk of accidents.

In terms of technology, the Crown 460CSL integrates advanced diagnostics and connectivity features. This enables fleet managers to monitor performance, track usage patterns, and schedule maintenance with ease. Remote access to diagnostic information ensures that any potential issues can be identified and resolved promptly, further enhancing the truck's reliability and efficiency.

In conclusion, the Crown 460CSL stands out in the crowded lift truck market due to its combination of ergonomic design, powerful motor technology, impressive lifting capabilities, and enhanced safety features. This electric lift truck is an excellent choice for businesses seeking to improve productivity and reduce operational costs while maintaining a safe and comfortable working environment for their operators.
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