Denon AVR-1906 Service Manual

13
AVR-1906 / AVR-786 / AVC-1620
24 TC9273_STB O TC9273-004(IC703) STB
25 TC9273_DATA O TC9273-004(IC703) DATA
26 TC9273_CLK O TC9273-004(IC703) CLOCK
27 NC I/O OPEN
28 MIC_RELAY O MIC RELAY (RLY701) CONTROL
29 TC90A69/TA1270_CLK O TC90A69(IC612) SCLOCK/TA1270BF(IC901) SCLOCK
30 TC90A69/TA1270_DATA I/O TC90A69(IC612) SDATA/TA1270BF(IC901) SDATA
31 RS232C_TX O RS232C SIGNAL OUTPUT
32 RS232C_RX I RS232C SIGNAL INPUT
33 NC O GND
34 NC O GND
35 PLL_DATA_IN I TUNER DATA IN
36 PLL_DATA_OUT O TUNER DATA OUT
37 PLL_CLK O TUNER PLL CLOCK
38 PLL_CE O TUNER PLL CHIP ENABEL
39 TUNED I TUNED SIGNAL INPUT
40 STEREO I STEREO SIGNAL INPUT
41 RS232C_UPGRADE(EPM) I UP GRADE PIN (TP201 EPM)
42 VOL_ENCORDER_UP I MASTER VOLUME ENCODER(VEC301)
43 VOL_ENCORDER_DOWN I MASTER VOLUME ENCODER(VEC301)
44 SELECT_UP I SELECT ENCONDER(VEC302)
45 SELECT_DOWN I SELECT ENCONDER(VEC302)
46 RS232C-UPGRADE(CE) I UP GRADE PIN (TP201 CEÅj
47 POWER_DOWN I POWER DOWN CONTROL INPUT
48 RDS_DATA I TDA7330BDÅiIC202Åj RDDR SIGNAL INPUT
49 ERR_MUTE O ERROR MUTE
50 BSE O DIGITAL SIGNAL MUTE
51 LC89057_EMPHA I LC89057(IC807) PRE EMPHASIS INFOMATION SIGNAL INPUT
52 SHARC_SDIN I SHARC(IC804) SERIAL DATA INPUT
53 LC89057_SDIN I LC89057(IC807) D0 SIGNAL INPUT
54 EPPROM_RESET O FLASH ROM(IC805) RESET
55 LC89057_RESET O LC89057(IC807) RESET
56 SHARC_CE O SHARC(IC804) CHIP ENABEL
57 SHARC_SDOUT O CHARC(IC804) SERIAL DATA OUT
58 LC89057_CE O LC89057(IC807) CHIP ENABLE
59 LC89057_AD1837_SDOUT O LC89057(IC807) D1 SIGNAL / AD1837(IC808) CIN SIGNAL
60 LC89057_AD1837_SCLK O LC89057(IC807) CLOCK/ AD1837(IC808) CCLOCK
61 AD1837_RESET O AD1837(IC808) RESET SIGNAL OUT (TO IC821)
62 Vcc2(+5V) 5V POWER 5V
63 SHARC_SCLK O SHARC(IC804) SPICLK
64 Vss GND GND
65 SHARC_RESET O SHARC(IC804) RESET SIGNAL
66 AD1837_CE O AD1837(IC808) CLATCH
67 FLAG3 I Special flag for ROM updata
68 FLAG2 I DSP operation check flag
69 FLAG1 I NON USE
70 H/P_DETECT I HEAD PHONE DETECT
71 FUNCTION_UP I FUNCTION ENCODER (VEC303)
72 FUNCTION_DOWN I FUNCTION ENCODER (VEC303)
73 RDS_CLK O TDA7332BD(IC202) CLOCK FOR RDS
74 POWER_KEY I POWER SWICH SIGNAL INPUT
75 MIC DETECT I MIC DETECTION
76 POWER_RELAY O FRONT PANEL POWER CONTROL
77 ST/BY_LED(RED) O STBY LED RED CONTROL
78 VCR_MUTE O VCR OUT(REC OUT) OUTPUT CONTROL
79 BD3811K1_CLK O BD3811K1(IC701) CLOCK/BD3812F (IC702) CLOCK
PIN No. PIN NAME I/O FUNCTION

Denon AVR-1906 Specifications

Power Amplifier Section

front power output (8 ohms)	85 W + 85 W
front power output (6 ohms)	120 W + 120 W
center power output (8 ohms)	85 W
center power output (6 ohms)	120 W
surround power output (8 ohms)	85 W + 85 W
surround power output (6 ohms)	120 W + 120 W
surround back power output (8 ohms)	85 W + 85 W
surround back power output (6 ohms)	120 W + 120 W

Preamplifier Section

input sensitivity/impedance	200 mV/47 kohms
output level/load impedance	SUBWOOFER 1.2 V/10 kohms
frequency response	10 Hz - 100 kHz (+1, -3 dB)
signal-to-noise ratio	98 dB (IHF-A weighted)
tone control treble	±12 dB at 10 kHz
tone control bass	±12 dB at 100 Hz

FM Section

tuning frequency range (FM)	87.5 - 107.9 MHz
usable sensitivity (FM)	1.0 µV (11.2 dBf)

AM Section

tuning frequency range (AM)	520 - 1710 kHz
usable sensitivity (AM)	18 µV

General

power supply	AC 120 V, 60 Hz
power consumption	5.1 A
dimensions	434 (W) x 147 (H) x 417 (D) mm
weight	11.7 kg