Philips M1353A, M1351A manual CPU Board M1353-66503 and M1353-66513

CPU Board (M1353-66503 and M1353-66513)

CPU Board (M1353-66503 and M1353-66513)

CPU Board	This board works with the 4 ohm loudspeaker and is used in:
M1353-66503	lM1351A monitors with serial number prefix ≤	3604G.
	M1353A monitors with serial number prefix ≤	3605G.
CPU Board	This board works with the 8 ohm loudspeaker and is used in:
M1353-66513	lM1351A monitors with serial number prefix ≥	3651G.
	M1353A monitors with serial number prefix ≥	3652G.

apegblk2

The Central Processor Unit (CPU) Board is the heart of the system and controls most other boards. The 68000 microprocessor and associated support ICs provide system functions; the bus control section controls the system bus. The board contains two Flash EEPROMs lwhich contain all the system software.The board includes the following sections:

Microprocessor Section:

68000 microprocessor.

nFlash EEPROMs containing all system software and a boot program allowing software upgrades via the Service Connector.

56 Chapter 6 Theory of Operation