Single Unit Operation Methods - Pioneer HTZ-7 Service Manual

7.2.2 SINGLE UNIT OPERATION METHODS

Single unit operation method for the DVD center unit (HTZ-C7)
For the items (2) and (3) of the following three items, there are two methods.
(1) Supply of +5.6 V
This is always required, as it is the power supply for the microcomputer. Please supply this from an external power supply.
(2) Supply of +12 V
This is for operation of the relay for supply of the AC of the DVD center unit.
(2-1) Please supply this from an external power supply. (Fig. 1)
(2-2) Substitution is possible by directly short-circuiting the relay. (Fig. 2)
(3) IR supply
This is for supply of IR. This is not required for servicing only with the keys of the main unit.
(3-1) Please connect the "remote control light reception jig GGF1270". (Please supply +5 V from the external power supply of the above item
(1). (Fig. 1)
(3-2) Substitution is possible by wired input from "equipment with SR-OUT" to "SR-OUT" of the DVD center unit. (This is "SR-OUT", but
the circuit also functions as "SR-IN". For normal SR operation, GND of AUDIO or VIDEO must be connected.)
I
MOTHER ASSY
+12V
Fig. 1 MOTHER Assy (seen from the solder side)
Front
SIDE B
IR +5.6V GND
HTZ-7, HTZ-C7, HTZ-SW7, HTZ-ST7
J
POWER MAIN ASSY
Short-circuit point as substitute for +12 V
Fig. 2 POWER MAIN Assy (seen from the solder side)
SIDE B
Front
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