Main 2/5 Schematic Diagram - Hitachi DV-PF2U Service Manual

Main 2/5 Schematic Diagram

* 2 Note:
There are two types of tuner unit (TU701) : A and B.
These types are compatible, and there is no problem when
using either, but it is recommended that you replace the unit
with the same type if possible.
The following table shows the differences between types A
and B:
TU701
J306 J308 J311
TYPE A TS17421 NU NU
NU
TYPE B TS17431 WIRE WIRE WIRE
NU: Not Used
WAVEFORMS
WF1 (TP751 of Main CBA)
V-OUT E-E
10usec 50mV x 10
WF1 (TP751 of Main CBA)
UPPER
WF2 (TP302 of Main CBA)
LOWER
V-OUT 0.1V x 10
RF-SW 0.5V x 10
50usec
WF5 (TP301 of Main CBA)
UPPER
WF2
(TP302 of Main CBA)
LOWER
C-PB 10mV x 10
RF-SW 0.5V x 10
5msec
4-1-5