Pioneer KRL-46V Service Manual page 53

5
No picture appears on INPUT1 - connected moni
Checklist:
1) Is the Signal Type (item) in MENU-Option-Input Select equal to Signal Type of an external device? ⋅ ⋅ ⋅ Set it to "CVBS", "Y/C" or "RGB".
2) Is ANT-CABLE disconnected or connected improperly? ⋅ ⋅ ⋅ Connect it correctly as per the operation manual.
3) The picture is sent to the monitor in a CVBS signal if the source during display is TV, CVBS or Y/C of INPUT1-3.
When sent by component, etc., that signal is not sent to the monitor.
4) When the monitor picture is not sent and is not displayed on the monitor, refer to "No picture" for each terminal.
5) The video output from INPUT1 is not the monitor output (output of the picture now watching).
The picture of the last selected TV channel is always sent to INPUT1. (Specification)
TERMINAL UNIT:
Is CVBS signal output into pin (19) of SC502 (SCART1) from pin
(2) of IC1501 (SW)?
NO
Is TUNER_CVBS signal input into pin (6) of IC503 (SW)?
NO
Is TUNRECVBS signal output from pin (17) of IC7504 (IF-
DEMO)?
NO
Is IF signal output from pin (17) of TUNER (TU7501)?
NO
Check whether I2C is normally accessed between TU7501 and
IC7507 (COFDM).
5
6
<During external connection> No picture on the monitor (1)
tor during the tuner (U/V) reception.
YES
YES
YES
YES
KRL-46V
6
7
Check the setting of an external input device that connects of
SC502.
Check the IC501 (SW), IC503 (SW) and their peripheral circuits.
Check the line between IC7504 and IC503.
(Q7505, IC7508, etc.)
Check the IC7504/FL7502 (VIF_SAW) and its peripheral circuits.
7
8
A
B
C
D
E
F
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