Error 53 -- Memory/SIMM Errors
Error 53 is indicated by a combination of the Error LED and either
Tray LED, on and steady. More detail about the error is found by
pressing the GO and RESET/JOB CANCEL buttons simultaneously,
which causes a secondary sequence of light patterns. These secondary
patterns form a binary representation of the exact hardware type,
device and error number in the form 53-XY-ZZ as shown in Table 4.
Figure 30 explains how to read the light sequences. The initial
sequence (Part 1) shows that ERROR 53 can be indicated by two
different light sequences, depending on the X value: ROM (x =0) or
in RAM (x =1) . Pressing GO and RESET/JOB CANCEL together
produces a secondary light pattern, which reveals the Y- and ZZ-
values, which complete the error code (Part II) . The binary Y
value is read from the top two LEDS; the binary Z value is read
from the lower three LEDS. Part III of Figure 27 shows the binary
values of the different light combinations.
X-Hardware
Type
Y-Hardware Device ZZ - Error Number
0: ROM 0: On board RAM/ROM 00: Unsupported memory
1: RAM 1: SIMM slot 1 01: Unrecognized memory
2: SIMM slot 2 03: Unsupported memory size
3: SIMM slot 3 04: Invalid SIMM speed
05: SIMM reporting information
incorrectly
06: SIMM address conflict
07: Could not make temporary mapping
Table 4. Memory Error Codes
HP LaserJet 5P/5MP, 6P/6MP Printer Service Supplement
Troubleshooting
65
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