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ADJUSTING THE MIC AMP CIRCUIT
(Wiring board diagram: AIO Side A)
TL6607(INT MIC R)
EE level check
Frequency character check
R2627
C2611
R2626
R2625
TL2672
TL2674
TL2675
R2624
TL2671
R2623
TL6607
R2622
TL2673
R2620
R2621
TL2690
R6637
TL2686
C6635
TL2685
C6639
C6640
TL2684
C6641
TL2682
C6646
TL2681
R6652
TL2680
C6645
TL2679
TL2678
C6644
TL2677
TL2676
R6651
R6650
7
R6646
R6647
R6648
R6649
1. EE level check
Measuring instrument
Mode
Test signal
Procedure
Remark
2. Frequency character check
Measuring instrument
Mode
Test signal
Procedure
Remark
3. Super-directional microphone check
Measuring instrument
Mode
Test signal
Procedure
Remark
SC2601
R2629
R2628
D6601
C6601
R6610
C6683
Q6601
IC6603
R6634
TL6605
C6630
R6666
IC6601
R6665
R6629
C6622
TL6606(INT MIC L)
R6628
EE level check
C6621
Frequency character check
C6610
R6615
R6619
C6612
TL6606
R6616
C6614
C6611
Valve voltmeter
P-ON (CAM), Zoom Mic "OFF"
1kHz -54dBs sine wave
1) Input 1kHz, -54dBs sine wave into TL6606(INT MIC L) and TL6607(INT MIC R).
2) Make sure that the signal level of TL605 Audio-L out and TL604 Audio-R out is within the standard
limits.
TL6609: GND
Valve voltmeter
P-ON (CAM)
Parameter; Zoom Mic "OFF"
100Hz, 10kHz -54dBs sine wave
1) Input 100Hz, -54dBs sine wave and then 10kHz, -54dBs sine wave into TL6606(INT MIC L) and
TL6607(INT MIC R).
2) At this time make sure that the signal level of TL605 Audio-L out and TL604 Audio-R out is within the
standard limits (1kHz standard).
TL6609: GND
Valve voltmeter
P-ON (CAM), Zoom MIC "TELE"
1kHz -54dBs sine wave
1) Input 1kHz, -54dBs sine wave into TL6608(TELE-MIC).
2) Make sure that the signal level of TL605 Audio-L out and TL604 Audio-R out is within the
standard limits.
TL6609: GND
Published in Heiloo, Holland
(Wiring board diagram: AIO Side B)
TL6608(TELE-MIC)
Super-directional microphone check
TL6609(GND)
EE level check
Frequency character check
Super-directional microphone check
TL605
EE level check
Frequency character check
Super-directional microphone check
TL604
EE level check
Frequency character check
Super-directional microphone check
Test point
TL605, TL604
-9dBs ± 3dB
Adjustment rating
Test point
TL605, TL604
(1kHz standard) 100Hz: -11dBs ± 3dB
Adjustment rating
Test point
TL605, TL604
-14dBs ± 3dB
Adjustment rating
29
VL-NZ10S/H/E
12/9/2016
C2602
R2606
R2619
R2618
IC2601
R2617
R2616
TL6608
TL6601
TL6609
C639
R654
TL6602
C645
TL2645
C629
IC
TL2643
C628
TL2659
C623
TL2647
C617
TL2648
TL2646
TL2667
TL2642
TL2644
TL2687
R613
TL2662
R616
Q605
TL2689
TL2688
TL2663
R662
TL2669
TL2655
TL605
TL2652
TL604
TL2654 T L2683
Q608
TL2653
10kHz: 0dBs ± 3dB
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