Hitachi VIV-E553LE - Self-Diagnostic Function

CHAPTER 7 APPENDIX
1. SELF-DIAGNOSTIC FUNCTION
1.1 Overview
The camera/recorder has the following self-diagnostic
function.
@ Occasional defect self-diagnostic function (A mode)
@ Mechanical block self-diagnostic function (B mode)
Fig. 1-1 shows the self-diagnostic coverage range.
The self-diagnostic functions of the camera/recorder are
engaged by the system control (main) uP (C0901) which
detects, memorizes and displays data related to defects in
the mechanical block control system.
VIDEO SIGNAL
CAMERA
BLOCK
Ly
PROCESS
CIRCUIT
iL,
AUDIO
SIGNAL
MIC
UNIT
PROCESS
CIRCUIT
SELF-DIAGNOSIS COVER RENGE
TROUBLE SYSTEM CONTROL SERVO
SENSOR CIRCUIT : CIRCUIT
EJT, UST, REW,
LST, FWD, HEC
MODBW
Fig. 1-1 Self-Diagnostic Coverage Range
E7-1