iii
Digital Data Size for Depth, Temperature, Speed, Distance Log ...74
Scales...................................................................................................75
Troubleshooting..............................................................................77
Unit won't turn on: .........................................................................77
Unit operates only in demo mode:.................................................77
Unit freezes, locks up, or operates erratically:.............................77
Weak bottom echo, digital readings erratic, or no fish signals: ..78
Bottom echo disappears at high speeds or erratic digital
reading or weak bottom echo while boat is moving .....................78
No fish arches when the Fish I.D. feature is off:..........................79
Noise................................................................................................79
Index ..................................................................................................81
